Biruta Rasiņa’s collection of scale insects (Hemiptera: Sternorrhyncha: Coccomorpha) at the Latvian National Museum of Natural History, including type material of several species

Hyperiids (Amphipoda, Hyperiidea) collected during the TALUD cruises in western Mexico. 5. Family Amphithyridae, with the description of a new species of Amphithyropsis Zeidler

Thor dicaprio sp. nov., a new, conspicuously coloured shrimp from the tropical western Atlantic, with taxonomic remarks on the T. amboinensis (De Man, 1888) complex (Decapoda: Caridea: Thoridae)

Studies in Mexican Grasshoppers: Four new species of Reyesacris Fontana, Buzzetti & Mariño-Pérez, 2011 (Orthoptera: Acrididae: Ommatolampidinae)

A sketch-based system for modeling 3D objects: Applications to taxonomy

A new species of scavenger Cladocera Pseudochydorus Fryer, 1968 (Cladocera: Anomopoda: Chydoridae) from the Central Mexican Plateau

Occurrence and spread of Ceroplastes cirripediformis Comstock (Hemiptera: Coccomorpha: Coccidae) in India

Burrowing mud shrimps (Decapoda: Axiidea & Gebiidea) of the northeastern Black Sea and their external parasites

Endogean and cavernicolous Coleoptera of the Balkans. XXIV. Amauropini (Coleoptera: Staphylinidae: Pselaphinae) from the collection of the Moravian Museum in Brno

A remarkable new species of the genus Macronotops Krikken, 1977 (Coleoptera: Scarabaeidae: Cetoniinae) from Vietnam

Erratum: BARBARA LIS & JERZY A. LIS (2021) Hypsipyrgias joseliae, a new species of lace bugs (Heteroptera: Tingidae: Tinginae) from New Guinea with a key to species of the genus Hypsipyrgias, and comments on three allied genera Hypsipyrgias Kirkaldy, 1908, Diplocysta Horváth, 1925, and Hypsotingis Drake, 1960. Zootaxa, 4958: 327–333.

Erratum: GIULIO GARDINI (2021) The Italian species of the Chthonius ischnocheles group (Arachnida, Pseudoscorpiones, Chthoniidae), with reference to neighbouring countries. Zootaxa, 4987 (1): 001–131.