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Showing posts with label Thailand. Show all posts
Showing posts with label Thailand. Show all posts

Thursday, January 2, 2025

[Entomology • 2021] Tsounkranaglenea hefferni • A New Genus and Species of Saperdini (Coleoptera: Cerambycidae: Lamiinae) from Sabah, Malaysia


Tsounkranaglenea hefferni  
Lin & Ge, 2021
 

Abstract
A new saperdine species belonging to a new genusTsounkranaglenea hefferni gen. et sp. nov., is described from Sabah, Malaysia. The new genus differs from other genera of the tribe Saperdini by the special male sternite VII modified into a rake-shape, with the apex of the ventral plate of the median lobe unusually emarginated.

Coleoptera, New genus, Glenea, Glenea subaurata, Asia, taxonomy

Tsounkranaglenea hefferni gen. et sp. nov. 
1. Holotype, male. 2-5. Paratype, female. 2b-d, showing abdomen especially the 7th and 8th segment; 3, abdomen with genitalia removed; 4, claw of left middle tarsus; 5, claw of right middle tarsus. a, dorsal view; 4a, dorsa-lateral view; b, lateral view; 4b, back view; 2c, lateral view; 3c, ventral view; d, back view; e, frontal view.
1a, 1b, 2a: scale bar 4.0 mm; 3a-3c: scale bar 2.0 mm; others not to scale.

 6–10. Terminalia of Tsounkranaglenea hefferni gen. et sp. nov.
6, Tergite VIII; 7, sternites VIII & IX; 8. Tegmen; 9, Median lobe; 10, endophallus, showing a band of supporting armature, basal plate-like sclerites and rod-like sclerites. a, Ventral view; b, Lateral view, 7b, dorsal view; c, dorsal view; d, lateral view. 7-10, Scale bar 0.1 mm; 6, scale bar 1.0 mm.

Tsounkranaglenea gen. nov.

Diagnosis. It is mostly similar to Glenea by the lateral elytral carinae and truncate elytral apex, but can be distinguished by the elongated, bended and rake-shaped sternite VII. In fact, it differs from all other saperdine genera by the peculiar sternite VII in males. It also differs from Paraglenea Bates, 1866, Heteroglenea Gahan, 1897 (as defined in Lin, Montreuil et al, 2009) and Pareutetrapha Breuning, 1952 by the male claws of fore and hind legs simple instead of appendiculate or bifid and elytral apex truncated with sharp teeth instead of rounded or slightly truncated without sharp teeth. It also differs from Eumecocera Solsky, 1871 and Stenostola Dejean, 1835 by the elytra with lateral carinae and male claws of fore and hind legs simple instead of appendiculate or bifid. The combination of the following characters makes the new genus easily separable from other saperdine genera: prothorax without lateral tubercles, elytra with distinct lateral carinae, elytral apex truncated with long spines at outer angle, male claws with appendiculated tooth only in mesotarsi and female claws all simple, male sternite VII elongated and bended into a rake-shape.

Etymology. The generic name is a combination of a Greek word tsounkrána (τσουγκράνα) and the genus name Glenea. The Greek word “tsounkrána” refers to the shape of sternite VII in male, which looks like a rake. Gender feminine.


 Tsounkranaglenea hefferni sp. nov.

Etymology. The species is named after Mr. Daniel Heffern (Texas, USA), who offered the interesting material for this study and provided the first author some wonderful saperdine specimens from Malaysia for research.

Diagnosis. This species resembles Glenea subaurata Breuning, 1950 at first glance by the similar shape and colour. The specific differences are easily defined by the male sternite VII. Without specimens for dissection, we can not conclude whether Glenea subaurata Breuning, 1950 should be moved to the new genus Tsounkranagleneaor not. 


Mei-Ying LIN and Si-Qin GE. 2021. Tsounkranaglenea hefferni gen. et sp. nov. from Sabah, Malaysia (Coleoptera, Cerambycidae, Lamiinae: Saperdini).  Zootaxa. 5048(2); 289-297. DOI: doi.org/10.11646/zootaxa.5048.2.9

Thursday, December 26, 2024

[Botany • 2024] Curcuma sumonii & C. wanchaii (Curcuma subg. Curcuma, Zingiberaceae: Zingibereae) • A New Taxa from Thailand

 
Curcuma sumonii Saensouk, P.Saensouk, Boonma & Techa 
C. wanchaii Saensouk, P.Saensouk, Maknoi & Boonma, 

in P. Saensouk, S. Saensouk, Boonma, Ragsasilp, Maknoi, Techa, Srisuk et Souladeth, 2024. 
(Photographs by T. Boonma).

Abstract 
This research presents the discovery of two novel taxaCurcuma sumonii Saensouk, P.Saensouk, Boonma & Techa, and C. wanchaii Saensouk, P.Saensouk, Maknoi & Boonma, belonging to the Curcuma subgenus CurcumaCurcuma sumonii was collected in Sukhothai Province, Northern Thailand, while C. wanchaii was found in Kanchanaburi Province, Southwestern Thailand. Our study provides a comprehensive documentation of their morphological attributes, including detailed descriptions supported by visual aids. In addition to morphological data, we offer insights into vernacular names, ecological characteristics, phenology, traditional uses, conservation status, and distribution maps. Morphological comparison Tables 1 and 2 are provided to differentiate between these newly discovered taxa and their allied species. Furthermore, we present an identification key to facilitate the differentiation of these taxa from their allied species. The findings of this study contribute to the understanding of biodiversity within the Curcuma genus and offer valuable information for further conservation efforts and taxonomic research.

Keywords: Curcuma, Critically endangered, Kanchanaburi, Sukhothai, Taxonomy, Zingiberales 

Curcuma sumonii Saensouk, P.Saensouk, Boonma & Techa sp. nov.
 (A) habit in natural habitat, and (B) side view of inflorescence with flowers.
(Photographed by Surapon Saensouk).

 Curcuma sumonii Saensouk, P.Saensouk, Boonma & Techa, sp. nov. 

Curcuma wanchaii Saensouk, P.Saensouk, Maknoi & Boonma sp. nov.
(A) inflorescences, (B) flower, (C) side and front view of anther, (D) habits in the natural habitat, growing along with Globba substrigosa King ex Baker.
(Photographs by Thawatphong Boonma).

C. wanchaii Saensouk, P.Saensouk, Maknoi & Boonma, sp. nov. 

  
Piyaporn Saensouk, Surapon Saensouk, Thawatphong Boonma, Areerat Ragsasilp, Charan Maknoi, Chainarong Techa, Pathomthat Srisuk and Phetlasy Souladeth. 2024.  Curcuma sumonii sp. nov., and C. wanchaii sp. nov. (Zingiberaceae), Two New Taxa of Curcuma subgen. Curcuma from Thailand. Scientific Reports. 14: 27541. DOI: doi.org/10.1038/s41598-024-79261-x 
 

Monday, December 23, 2024

[Botany • 2024] Psychotria oxyalabastron (Rubiaceae) • A New Species and A New Record of Psychotria from Thailand

 

Psychotria oxyalabastron T.Srisuk & Chamch.,

in Srisuk, Chamchumroon, Chantaranothai et Pornpongrungrueng, 2024.  
 พาโหมดง  || DOI: doi.org/10.20531/tfb.2024.52.2.16 

Abstract
A new species, Psychotria oxyalabastron, is described, and P. laui is newly recorded from Thailand. The description, distribution area, ecological information and taxonomic note are provided.

Keywords: Gentianales, Psychotria laui, Psychotria oxyalabastron, Psychotrieae, Taxonomy

Psychotria oxyalabastron T.Srisuk & Chamch.:
A. flowering branch; B. stipules, outer surface; C. stipules, inner surface with hairs and colleters; D. floral bud; E. flower, dissection; F. pyrene, side view; G. pyrene, cross section; H. seed, dorsal view; J. seed, ventral view.
Materials A.–E. from Hansen & Smitinand 12045 (E); F.–J. from van Beusekom & Phengklai 925 (K). Drawn by T. Srisuk.


Psychotria oxyalabastron T.Srisuk & Chamch., sp. nov.

Psychotria oxyalabastron is similar to P. cambodiana Pierre ex Pit. in having tomentose, puberulous or pilose indumentum on branches and the lower leaf surface (at least on the venation), bifid or bilobed stipules, elliptic or oblanceolate laminas, loose corymbose-like thyrsiform inflorescences, and glabrous floral buds. However, it differs from P. cambodiana in the glabrous upper leaf surface (vs pilose), glabrous on intercostal areas on the lower leaf surface (vs pilose), acute floral bud apex with corolla protrusion (vs rounded floral bud apex without corolla protrusion), shorter corolla tube 1.3–1.4 mm long (vs 2–2.3 mm long), and the glabrous to sparsely puberulent ovary (vs tomentose or pilose).



Etymology.— The specific epithet ‘oxyalabastron’ refers to the acute shape of the floral bud, and is modified from the Greek “oxy-” for acute, combined with “alabastrum” for floral bud (alabastron = adjective form).
Vernacular.— Pha hom dong (พาโหมดง) (proposed here).



Teerawat Srisuk, Voradol Chamchumroon, Pranom Chantaranothai and Pimwadee Pornpongrungrueng. 2024. A New Species and A New Record of Psychotria (Rubiaceae) from Thailand. Thai Forest Bulletin (Botany). 52(2), 110–117. DOI: doi.org/10.20531/tfb.2024.52.2.16

Sunday, December 22, 2024

[Diplopoda • 2018] Nagaxytes acantherpestes, N. erecta, N. gracilis & N. spatula • The New Genus Nagaxytes gen. nov. (Polydesmida: Paradoxosomatidae), with the Description of Three New Species [A Revision of Dragon Millipedes II]


 Nagaxytes gracilis Srisonchai, Enghoff & Panha, 
 N. erecta Srisonchai, Enghoff & Panha, 

in Srisonchai, Enghoff, Likhitrakarn et Panha, 2018. 

Abstract
The ‘acantherpestes’ group of dragon millipedes, formerly placed in the genus Desmoxytes Chamberlin, 1923, is revised and assigned to the new genus Nagaxytes Srisonchai, Enghoff & Panha gen. nov. Desmoxytes acantherpestes Golovatch & Enghoff, 1994 is the type species of the new genus and is redescribed as N. acantherpestes (Golovatch & Enghoff, 1994) gen. et comb. nov. Three new species are described from Thailand: N. erecta Srisonchai, Enghoff & Panha gen. et sp. nov. and N. gracilis Srisonchai, Enghoff & Panha gen. et sp. nov. from Kanchanaburi Province, and N. spatula Srisonchai, Enghoff & Panha gen. et sp. nov. from Tak Province. All new species are endemic to western Thailand and all are restricted to limestone habitats. Complete illustrations of external morphological characters, an identification key, and a distribution map are provided.

Keywords: endemic; dragon millipede; new species; taxonomy; Thailand

Taxonomy
Class Diplopoda Blainville-Gervais, 1844
Order Polydesmida Pocock, 1887
Suborder Strongylosomatidea Brölemann, 1916

Family Paradoxosomatidae Daday, 1889
Subfamily Paradoxosomatinae Daday, 1889
Tribe Orthomorphini Brölemann, 1916

 General body characters of Nagaxytes Srisonchai, Enghoff & Panha gen. nov.
 N. acantherpestes (Golovatch & Enghoff, 1994) gen. et comb. nov., ♂, holotype, Prachuap Khiri Khan Province, Hua Hin District (ZMUC 000101457).
A. Entire body. B. Anterior body part. C. Body rings 5–8, showing sternal lobe between coxae 4 and gonopods on ring 7. D. Head and antennae.

Genus Nagaxytes Srisonchai, Enghoff & Panha gen. nov.

Type species: Desmoxytes acantherpestes Golovatch & Enghoff, 1994

Diagnosis: 
The genus Nagaxytes gen. nov. is characterized by:
1. Paraterga subspiniform.
2. Metaterga with 2 rows of tubercles/cones/spines (lateral spines of posterior row very long).
3. Male femora 5 and 6 without modification.
4. Postfemoral part of gonopod conspicuous, demarcated from femur by a deep mesal sulcus and a
shallow/deep lateral sulcus.
5. Lamina lateralis obviously separated from lamina medialis.
6. Lamina medialis long and curved, apically fringed/hooked.

Etymology: Naga’ is a Sanskrit and Pali word, relating to a category of snake-like spirits in Buddhist and Hindu mythology, and refers to the snake-like shape of the lamina medialis of the gonopod; ‘-xytes’ ensures harmony with Desmoxytes (and its synonym Pteroxytes Jeekel, 1980).

Included species (4): 
N. acantherpestes (Golovatch & Enghoff, 1994) gen. et comb. nov.
N. erecta Srisonchai, Enghoff & Panha gen. et sp. nov.
N. gracilis Srisonchai, Enghoff & Panha gen. et sp. nov.
- N. spatula Srisonchai, Enghoff & Panha gen. et sp. nov.

Remarks: Srisonchai et al. (2018) proposed to subdivide Desmoxytes sensu Golovatch & Enghoff (1994) into five genera. The ‘acantherpestes’ group (= Nagaxytes) is well-defined by several distinct morphological characters (see diagnosis), especially the distinctive subspiniform paraterga and the very long lamina medialis of the gonopods. Even though the subspiniform paraterga are relatively similar to those of the ‘gigas’ group, the gonopod details are very different.

Distribution and habitat: This genus is known only from the western part of Thailand: Prachuap Khiri Khan Province (Hua Hin and Kui Buri Districts), Kanchanaburi Province (Sai Yok and Thong Pha Phum Districts) and Tak Province (Mae Sot and Umphang Districts) (Fig. 27). All four species seem to be local endemics, highly restricted to limestone habitats, and all have narrow distribution ranges. The specimens were usually found on humid rocks, rock walls, leaf litter or surface roots of trees. Some species can be found syntopically in the same habitat with other dragon millipede species.


Nagaxytes acantherpestes (Golovatch & Enghoff, 1994) gen. et comb. nov. 
 
Diagnosis: Metaterga 4–19 with one row of 2+2 posterior spines (anterior row absent). Similar in this respect to N. gracilis gen. et sp. nov. but differs from this species by having paraterga shorter; degree of elevation of paraterga lower; sternal lobe between male coxae 4 subtrapeziform; lamina lateralis swollen, stout, short.

Live photographs and habitat of Nagaxytes erecta Srisonchai, Enghoff & Panha gen. et sp. nov.
A. Specimen from Ban Nong Bang, Thailand (♀). B. Mating couple. C. ♂ with parasitic mites. D. Habitat.

Nagaxytes erecta Srisonchai, Enghoff & Panha gen. et sp. nov. 

Etymology The name is a Latin adjective and refers to the erect lamina lateralis of the gonopod telopodite. 


 Nagaxytes gracilis Srisonchai, Enghoff & Panha gen. et sp. nov., ♂, paratype (CUMZpxDGT00095).
Watercolour by R. Srisonchai and P. Kriatpraprai.

Nagaxytes gracilis Srisonchai, Enghoff & Panha gen. et sp. nov. 
 
Etymology The name is a Latin adjective, referring to the slender lamina lateralis of the gonopod telopodite.

Distribution and habitat: Nagaxytes gracilis gen. et sp. nov. is known only from Sai Yok District, Kanchanaburi Province. All specimens were collected on humid rocks, superficial tree roots and litter in limestone habitats. It lives in the same habitat with D. purpurosea, D. golovatchi Srisonchai, Enghoff & Panha, 2018 and N. erecta gen. et sp. nov. (q.v.). The new species occurs in a narrow distribution area along the huge limestone range which is entirely contained within Sai Yok District. We thus consider this species to be endemic to Kanchanaburi Province, Thailand.


Nagaxytes spatula Srisonchai, Enghoff & Panha gen. et sp. nov.  

Etymology The name is a Latin noun in apposition, referring to the spatulate lobe on the lamina lateralis.

Distribution and habitat Known only from Tak Province. Almost all specimens were seen crawling on rocks, some on leaf litter in limestone habitats. Some juveniles were collected from the leaf litter (probably in moulting chambers). In the field, the specimens blended perfectly with brown rocks and leaf litter.


Ruttapon Srisonchai, Henrik Enghoff, Natdanai Likhitrakarn and Somsak Panha. 2018. A Revision of Dragon Millipedes II: The New Genus Nagaxytes gen. nov., with the Description of Three New Species (Diplopoda, Polydesmida, Paradoxosomatidae).  European Journal of Taxonomy. 462; 1–44. DOI:  10.5852/ejt.2018.462

   

[Diplopoda • 2018] Desmoxytes aurata, D. corythosaurus, D. octoconigera, ... • A Revision of Dragon Millipedes I: Genus Desmoxytes Chamberlin, 1923 (Polydesmida: Paradoxosomatidae), with the Description of Eight New Species


Desmoxytes aurata Srisonchai, Enghoff & Panha,  
D. corythosaurus Srisonchai, Enghoff & Panha,
D. euros Srisonchai, Enghoff & Panha,  

in Srisonchai, Enghoff, Likhitrakarn et Panham 2018. 

Abstract
The dragon millipede genus Desmoxytes s.l. is split into five genera, based on morphological characters and preliminary molecular phylogenetic analyses. The present article includes a review of Desmoxytes s.s., while future articles will deal with Hylomus Cook and Loomis, 1924 and three new genera which preliminarily are referred to as the ‘acantherpestes’, ‘gigas’, and ‘spiny’ groups. Diagnostic morphological characters of each group are discussed. Hylomus is resurrected as a valid genus and the following 33 species are assigned to it: H. asper (Attems, 1937), comb. n., H. cattienensis (Nguyen, Golovatch & Anichkin, 2005), comb. n., H. cervarius (Attems, 1953), comb. n., H. cornutus (Zhang & Li, 1982), comb. n., H. draco Cook & Loomis, 1924, stat. rev., H. enghoffi (Nguyen, Golovatch & Anichkin, 2005), comb. n., H. eupterygotus (Golovatch, Li, Liu & Geoffroy, 2012), comb. n., H. getuhensis (Liu, Golovatch & Tian, 2014), comb. n., H. grandis (Golovatch, VandenSpiegel & Semenyuk, 2016), comb. n., H. hostilis (Golovatch & Enghoff, 1994), comb. n., H. jeekeli (Golovatch & Enghoff, 1994), comb. n., H. lingulatus (Liu, Golovatch & Tian, 2014), comb. n., H. laticollis (Liu, Golovatch & Tian, 2016), comb. n., H. longispinus (Loksa, 1960), comb. n., H. lui (Golovatch, Li, Liu & Geoffroy, 2012), comb. n., H. minutuberculus (Zhang, 1986), comb. n., H. nodulosus (Liu, Golovatch & Tian, 2014), comb. n., H. parvulus (Liu, Golovatch & Tian, 2014), comb. n., H. phasmoides (Liu, Golovatch & Tian, 2016), comb. n., H. pilosus (Attems, 1937), comb. n., H. proximus (Nguyen, Golovatch & Anichkin, 2005), comb. n., H. rhinoceros (Likhitrakarn, Golovatch & Panha, 2015), comb. n., H. rhinoparvus (Likhitrakarn, Golovatch & Panha, 2015), comb. n., H. scolopendroides (Golovatch, Geoffroy & Mauriès, 2010), comb. n., H. scutigeroides (Golovatch, Geoffroy & Mauriès, 2010), comb. n., H. similis (Liu, Golovatch & Tian, 2016), comb. n., H. simplex (Golovatch, VandenSpiegel & Semenyuk, 2016), comb. n., H. simplipodus (Liu, Golovatch & Tian, 2016), comb. n., H. specialis (Nguyen, Golovatch & Anichkin, 2005), comb. n., H. spectabilis (Attems, 1937), comb. n., H. spinitergus (Liu, Golovatch & Tian, 2016), comb. n., H. spinissimus (Golovatch, Li, Liu & Geoffroy, 2012), comb. n. and H. variabilis (Liu, Golovatch & Tian, 2016), comb. n. Desmoxytes s.s. includes the following species: D. breviverpa Srisonchai, Enghoff & Panha, 2016; D. cervina (Pocock,1895); D. delfae (Jeekel, 1964); D. des Srisonchai, Enghoff & Panha, 2016; D. pinnasquali Srisonchai, Enghoff & Panha, 2016; D. planata (Pocock, 1895); D. purpurosea Enghoff, Sutcharit & Panha, 2007; D. takensis Srisonchai, Enghoff & Panha, 2016; D. taurina (Pocock, 1895); D. terae (Jeekel, 1964), all of which are re-described based mainly on type material. Two new synonyms are proposed: Desmoxytes pterygota Golovatch & Enghoff, 1994, syn. n. (= Desmoxytes cervina (Pocock, 1895)), Desmoxytes rubra Golovatch & Enghoff, 1994, syn. n. (= Desmoxytes delfae (Jeekel, 1964)). Six new species are described from Thailand: D. aurata Srisonchai, Enghoff & Panha, sp. n., D. corythosaurus Srisonchai, Enghoff & Panha, sp. n., D. euros Srisonchai, Enghoff & Panha, sp. n., D. flabella Srisonchai, Enghoff & Panha, sp. n., D. golovatchi Srisonchai, Enghoff & Panha, sp. n., D. octoconigera Srisonchai, Enghoff & Panha, sp. n., as well as one from Malaysia: D. perakensis Srisonchai, Enghoff & Panha, sp. n., and one from Myanmar: D. waepyanensis Srisonchai, Enghoff & Panha, sp. n. The species can mostly be easily distinguished by gonopod structure in combination with other external characters; some cases of particularly similar congeners are discussed. All species of Desmoxytes s.s. seem to be endemic to continental Southeast Asia (except the ‘tramp’ species D. planata). Some biological observations (relationship with mites, moulting) are recorded for the first time. Complete illustrations of external morphological characters, an identification key, and distribution maps of all species are provided.

Keywords: aposematic, dragon millipede, new species, Southeast Asia, taxonomy

Photographs of live Desmoxytes aurata sp. n. and habitat.
A, B male paratype C female paratype D mating couple E habitat.

Photographs of live Desmoxytes corythosaurus sp. n. and habitat
A, B male paratypes C female paratype D juvenile E habitat.

Photographs of live Desmoxytes euros sp. n. and habitat.
A, B male paratypes C female paratype D juvenile E egg cluster F cluster of stadium 1 juveniles G habitat.


 Ruttapon Srisonchai, Henrik Enghoff, Natdanai Likhitrakarn and Somsak Panha. 2018. A Revision of Dragon Millipedes I: Genus Desmoxytes Chamberlin, 1923, with the Description of Eight New Species (Diplopoda, Polydesmida, Paradoxosomatidae). ZooKeys. 761: 1-177. DOI: 10.3897/zookeys.761.24214 

[Botany • 2024] Pandanus ramromensis (Pandanaceae) • A New Species from Peninsular Thailand

 

Pandanus ramromensis Callm., Y.W.Low & Buerki, 

in Callmander,Low, Poopath et Buerki, 2024. 
เตยเขารามโรม  ||  Gardens' Bulletin Singapore. 76(2);  
Photos: M.W. Callmander & Y.W. Low
Drawn by W. Bhuchaisri.

Pandanus ramromensis Callm., Y.W.Low & Buerki (Pandanaceae) from the summit of Khao Ram Rome (Nakhon Si Thammarat Province) in Peninsular Thailand is described here. The new species resembles Pandanus kedahensis H.St.John in its ecology and habit but differs by the dimensions of its leaves, leaf shape, syncarps and styles. The new species is provided with line drawings and field photographs, and is assigned a preliminary conservation status of Vulnerable (VU) using the IUCN Red List criteria.

Keywords. Endemic, Khao Ram Rome, Nakhon Si Thammarat, Pandanales


Pandanus ramromensis Callm., Y.W.Low & Buerki.
A. Habit. B, C. Syncarp. D. Closeup on styles and stigmas. E. Single drupe detached. F. Basal part of a leaf. G. Median part of a leaf. H. Upper part of a leaf.
From the type Callmander et al. 1373. Drawn by W. Bhuchaisri.

Pandanus ramromensis Callm., Y.W.Low & Buerki.
A. Habit. B, C. Syncarp. D. Closeup on styles and stigmas.
From the type Callmander et al. 1373.
Photos: M.W. Callmander & Y.W. Low

Pandanus ramromensis Callm., Y.W.Low & Buerki 

Callmander, M.W., Low, Y.W., Poopath, M. and Buerki, S. 2024. Pandanus ramromensis (Pandanaceae), A New Species from Peninsular Thailand. Gardens' Bulletin Singapore. 76(2); 269 - 275.


Monday, December 16, 2024

[Botany • 2023] Vincetoxicum sangyojarniae (Apocynaceae: Asclepiodoideae) • Molecular Phylogenetic and Morphological Analyses support Recognition of A New Species of Vincetoxicum from eastern Thailand

 
Vincetoxicum sangyojarniae A.Kidyoo,

in A. Kidyoo et M. Kidyoo, 2023.

Abstract
An unknown Vincetoxicum species has recently been discovered in eastern Thailand. It is a twiner that resembles in its morphology Vincetoxicum flexuosum s.l., a variable taxon widely occurring from tropical Asia to Australia. Morphological examination showed that despite similarities in growth habit, leaf shape, gross appearance of inflorescence structure and flower colour, these two elements exhibit substantial differences in both vegetative and floral characters that clearly distinguish one from the other, particularly shape of the flower bud and indumentum on the corolla lobes. In addition, we also evaluated phylogenetic relationships based on DNA sequence data for ITS, trnT-L, trnL and trnL-F markers of this new Vincetoxicum sp. with congeners (including, inter alia, new sequences of the two varieties recognized in Thailand of V. flexuosum s.l., i.e. var. flexuosum and var. tenue). The analyses demonstrated that the new Vincetoxicum sp. is not closely related to the taxa recognized in V. flexuosum s.l. Instead, it was retrieved as sister to a clade containing the African taxa, Vincetoxicum caffrumVincetoxicum lycioides and Vincetoxicum fleckii. Therefore, integrated analyses of morphology and molecular phylogeny revealed the new Vincetoxicum sp. to be a well-defined species clearly distinct from V. flexuosum s.l., as well as from all other known congeners. The morphological similarity between the new Vincetoxicum sp. and V. flexuosum s.l. likely resulted from convergence, leading to various taxonomic complications. We here describe it as a new species, Vincetoxicum sangyojarniae, sp. nov., and provide a detailed description, illustration and photographs. Moreover, as phylogenetic relationships revealed that V. flexuosum s.l. is not monophyletic in its actual circumscription, a taxonomic reconsideration of this taxon is suggested.

Keywords: Convergence, Phylogeny, The Vincetoxicum flexuosum complex, Tylophora, Tylophorinae



Vincetoxicum sangyojarniae A.Kidyoo, sp. nov.
—TYPE: Thailand, Surin Province, 
Muang district, Rajamangala University of Technology Isan Surin Campus, ....

Etymology: The specific epithet ‘sangyojarniae’ is given in honour of Asst. Prof. Pacharaporn Sangyojarn, the senior botanist of the Faculty of Agriculture and Technology, Rajamangala University of Technology Isan, who first discovered and drew our attention to the plant.
 

Aroonrat Kidyoo and Manit Kidyoo. 2023. Molecular Phylogenetic and Morphological Analyses support Recognition of A New Species of Vincetoxicum (Apocynaceae, Asclepiadoideae) from eastern Thailand.  Plant Systematics and Evolution. 309, 27. DOI: doi.org/10.1007/s00606-023-01866-y 

Saturday, December 14, 2024

[Entomology • 2024] Prodasineura sangkhla • A New Damselfly (Odonata: Platycnemididae) from western Thailand

 

Prodasineura sangkhla
Keetapithchayakul, Makbun, Ignatius & Phan, 2024
 
แมลงปอเข็มท้องเข็มสังขละ  ||  DOI: doi.org/10.11646/zootaxa.5551.1.5
 
Abstract
Prodasineura sangkhla sp. nov. is described from the Takhian Thong waterfall near the Thai-Myanmar border, Kanchanaburi Province, Thailand. It differs from all other species of Prodasineura Cowley, 1934 by the combination of the characters including white pruinescence on prothorax, synthorax and some parts of legs, blue markings on S10 and anal appendages, shape of anal appendages in males, and shape of occipital band and posterior process of posterior lobe in females.

Odonata, dragonfly, Zygoptera, new species, morphology


Prodasineura sangkhla sp. nov.


Tosaphol Saetung Keetapithchayakul, Noppadon Makbun, Kaewpawika Jitthamma Ignatius, Quoc Toan Phan. 2024. Prodasineura sangkhla sp. nov., A New Damselfly from western Thailand (Odonata: Platycnemididae). Zootaxa. 5551(1); 131-140. DOI: doi.org/10.11646/zootaxa.5551.1.5

[News] แมลงปอเข็มท้องเข็มสังขละ (Prodasineura sangkhla) แมลงปอชนิดใหม่ชนิดแรกและชนิดส่งท้ายปี 2024
แมลงปอเข็มท้องเข็มสังขละได้รับการบรรยายเป็นชนิดใหม่สด ๆ ร้อน ๆ วันนี้ในวารสาร Zootaxa ครับ
คณะผู้บรรยายค้นพบแมลงปอเข็มชนิดนี้พร้อม ๆ กับแมลงปอเข็มท้องเข็มชนิดอื่น ๆ อีก 3 ชนิดคือ แมลงปอเข็มท้องเข็มดำ (Prodasineura autumnalis) แมลงปอเข็มท้องเข็มเอราวัณ (P. laidlawii) และแมลงปอเข็มท้องเข็มเสี้ยวส้ม ฟอร์มตะวันตก (P. sp. [nec. verticalis]) แต่ด้วยลักษณะอันโดดเด่นของตัวผู้ ทำให้เราแยกแมลงปอเข็มท้องเข็มสังขละได้ไม่ยาก กล่าวคือ อกและโคนท้องที่มีสีขาว และปลายท้องและรยางค์ปลายท้องที่มีสีฟ้า แต่สำหรับตัวเมีย หากมองด้วยตาเปล่า อาจจะแยกได้ยาก เพราะมีลายสีเหลืองสลับดำเหมือนกันหมด ต้องมานั่งจ้องลักษณะอกปล้องแรก (หรือที่เรียกกันง่าย ๆ ว่า คอ) และจำนวนหนามที่อยู่ด้านล่างของปลายรยางค์ปลายท้อง ถึงจะสามารถจำแนกได้อย่างถูกต้องแม่นยำครับ

แมลงปอเข็มชนิดนี้พบเกาะตามปลายใบไม้และกิ่งไม้เหนือลำธารที่อำเภอสังขละบุรี จังหวัดกาญจนบุรี และคาดการณ์ว่าน่าจะเจอทางฝั่งประเทศเมียนมาด้วยเช่นกัน เพราะจุดที่เจอมันอยู่ใกล้ชายแดนครับ
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A new species of genus Prodasineura, P. sangkhla, was described from Sangkhla Buri, Kanchanaburi Province. The description was published in Zootaxa today.
This new species co-occurs with other three members of the genus, that is P. autumnalis, P. laidlawii and P. sp. [nec. verticalis]. With white pruinosed thorax and blue abdomenal tip, males of P. sangkhla is easily differentiated from those species. Unlike the males, the general appearance of the females are similar to the congeners found in the area but you need to look at shape of prothorax and number of ventral spine on cerci for making an accurate ID.
Prodasineura sangkhla was spotted perching on leaf or twig along the stream in Sangkhla, Kanchanaburi Province and expected to be found in nearby area in Myanmar.

Thursday, December 12, 2024

[Botany • 2020] The non-monophyly of Dasymaschalon dasymaschalum (Annonaceae) revealed by a plastid DNA phylogeny, with Dasymaschalon halabalanum sp. nov. from Thailand and D. argenteum comb. nov.


Dasymaschalon halabalanum  Jongsook & Chaowasku,

in Jongsook, Samerpitak, Damthongdee et Chaowasku, 2020.  
บุหรงฮาลาบาลา  ||  DOI: 10.11646/phytotaxa.449.3.5 

Abstract
An extended molecular phylogeny of the genus Dasymaschalon (Annonaceae) has been reconstructed using up to six plastid DNA regions (matK, ndhF, rbcL exons; trnL intron; psbA-trnH, trnL-trnF intergenic spacers). The results unraveled the non-monophyly of a widely distributed D. dasymaschalum. A lineage of D. dasymaschalum native to Java and cultivated at Bogor Botanical Garden represents the true D. dasymaschalum, whereas the name Pelticalyx argentea is applicable to a distantly related clade of D. dasymaschalum from mainland Asia. Dasymaschalon argenteum comb. nov. is accordingly made. Additionally, the true D. dasymaschalum has been retrieved as the sister group of D. halabalanum, a new species from Narathiwat Province, southern Thailand herein described. Pedicel length, petal size and color, and the number of stamens per flower principally distinguish the new species from its sister group.

Keywords: molecular phylogenetics, morphology, new combination, systematics, taxonomy, Magnoliids



Hathaichanok Jongsook, Kittipan Samerpitak, Anissara Damthongdee and Tanawat Chaowasku. 2020. The non-monophyly of Dasymaschalon dasymaschalum (Annonaceae) revealed by a plastid DNA phylogeny, with D. halabalanum sp. nov. from Thailand and D. argenteum comb. nov. Phytotaxa. 449(3); 265–278. DOI: 10.11646/phytotaxa.449.3.5

 บุหรงธรรมดา ได้ชื่อวิทยาศาสตร์ใหม่  Dasymaschalon argenteum (Griff.) Jongsook & Chaowasku
และ  บุหรงฮาลาบาลา Dasymaschalon halabalanum  Jongsook & Chaowasku เป็นพืชชนิดใหม่ของโลก  

นักวิจัยวิทย์ มช. พบ กระดังงา 5 ชนิดใหม่ของโลก สวยงาม หายาก และใกล้สูญพันธุ์

Saturday, November 30, 2024

[Herpetology • 2024] Cyrtodactylus kanchanadit • A New Species of the Cyrtodactylus pulchellus Group (Squamata: Gekkonidae) from Surat Thani Province, Thailand Underscores This Group’s Remarkable Diversity on the Thai-Malay Peninsula


Cyrtodactylus kanchanadit
 Termprayoon, Rujirawan, Grismer & Aowphol, 2024
 
ตุ๊กกายกาญจนดิษฐ์  ||  DOI: doi.org/10.3390/ani14223226

Abstract
An integrative taxonomic study recognized a new species of the Cyrtodactylus pulchellus group from Kanchanadit District, Surat Thani Province, Southern Thailand. Phylogenetic analyses of the mitochondrial ND2 gene revealed a new species, Cyrtodactylus kanchanadit sp. nov., that is closely related to C. lekaguli. The new species differs from its sister lineage by bearing mean genetic divergence of 4.53% and significant differences in both mensural and morphometric characters (p < 0.05). Cyrtodactylus kanchanadit sp. nov. can be differentiated from the remaining members of the C. pulchellus species group because of its genetic divergence of ≥7.99% and a combination of differences in body size: 11–15 supralabial and 10–12 infralabial scales, 29–35 paravertebral tubercles, 18–23 longitudinal rows of dorsal tubercles, 32–37 rows of ventral scales, 20–23 subdigital lamellae on the fourth toe, 32–37 femoroprecloacal pores in adult males, and four or five dark body bands; weak tuberculation on body; absence of tubercles in the ventral body fold, absence of precloacal pores in females, and absence of scattered pattern of white tubercles on dorsum; presence of precloacal groove depression; and maculated white caudal bands. Cyrtodactylus kanchanadit sp. nov. is currently known from its type locality.

Keywords: bent-toed gecko; genetic; Southeast Asia; taxonomy

 Live specimen of the adult male holotype of Cyrtodactylus kanchanadit sp. nov. (ZMKU R 01091) from the type locality in Pa Ron Subdistrict, Kanchanadit District, Surat Thani Province, Thailand.

 Specimens of  Cyrtodactylus kanchanadit sp. nov. from the type locality show variation in coloration and body pattern.
(A) Adult male specimen (ZMKU R 01092) in preservative, (B) live adult female specimen (ZMKU R 01094),
(C) an individual from its habitat (not collected) showing four dark dorsal bands with an irregular pattern on the 3rd band, and (D) a juvenile (not collected) bearing four dark body bands and having light yellow color on the body with a white tail tip.

Cyrtodactylus kanchanadit sp. nov.

Diagnosis: Cyrtodactylus kanchanadit sp. nov. can be distinguished from all other species of the C. pulchellus group by a combination of the following characters: (1) SVL 92.5–101.1 mm in adult males (n = 4), 108.2–108.5 mm in adult females (n = 2); (2) 11–15 supralabial and 10–12 infralabial scales; (3) weak tuberculation on body; (4) no tubercles on ventral surfaces of forelimbs, gular region, or in ventrolateral body folds; (5) 29–35 paravertebral tubercles; (6) 18–23 longitudinal rows of dorsal tubercles; (7) 32–37 rows of ventral scales; (8) 20–23 subdigital lamellae on the fourth toe; (9) 32–37 femoroprecloacal pores in adult males; (10) absence of precloacal pores in adult females; (11) deep precloacal groove in males; (12) absence of scattered pattern of white tubercles on dorsum; (13) four or five dark dorsal body bands; (14) light caudal bands in adults infused with dark pigmentation; and (15) posterior portion of tail in hatchlings and juveniles white.

Etymology: The specific epithet kanchanadit refers to the type locality in Kanchanadit District, Surat Thani Province, Thailand.
Suggested common name: Kanchanadit Bent-toed Gecko ตุ๊กกายกาญจนดิษฐ์.

Habitat of Cyrtodactylus kanchanadit sp. nov. at the type locality Phet Phanomwat Waterfall, Kanchanadit District, Surat Thani Province. (A) Waterfall and (B) outcrop along the stream bank.
Photographs by Siriporn Yodthong.



 Korkhwan Termprayoon, Attapol Rujirawan, Larry Lee Grismer and Anchalee Aowphol. 2024. A New Species of the Cyrtodactylus pulchellus Group (Squamata: Gekkonidae) from Surat Thani Province, Thailand Underscores This Group’s Remarkable Diversity on the Thai-Malay Peninsula. Animals. 14(22), 3226. DOI: doi.org/10.3390/ani14223226

Simple Summary: This study discovered a new Cyrtodactylus population from Phet Phanomwat Waterfall in Southern Thailand. It has genetic divergences pertaining to mitochondrial NADH dehydrogenase subunit 2 (ND2) gene of ≥3.97% from its sister lineage, C. lekaguli, and bearing ≥ 7.99% genetic divergence from the congeners in the C. pulchellus group. This population can be separated from C. lekaguli by its morphologically significant differences. Based on the molecular and morphological evidence, this population is described as a new species, Cyrtodactylus kanchanadit sp. nov. The discovery of this new species increases the total number of Cyrtodactylus species to 377, of which 57 occur in Thailand.