New species and notes on Paravelia Breddin, 1898 (Heteroptera: Veliidae) from South America

The genus Syzeton Blackburn, 1891 (Coleoptera, Aderidae) in the United States of America

Contributions to the taxonomy, identification, and biogeography of the Palaearctic species of Cymodusa Holmgren (Hymenoptera: Ichneumonidae: Campopleginae)

The first cavernicolous Leuctridae (Insecta: Plecoptera) nymph from Guizhou, China

The Apechoneura nigricornis species-group, one, two or three species?

Determination of priority between Galeocorax Cappetta, 2012 and Eugaleocerdo Herman & Van Waes, 2012 (Galeomorphii incerti ordinis, Pseudocoracidae)

Studies on subfamily Aphodiinae (Coleoptera: Scarabaeoidea: Scarabaeidae) with description of three new species from the genera Agrilinus Mulsant & Rey, 1869, Gilletianus Balthasar, 1933 and Trichiorhyssemus Clouët, 1901

Pygmy grasshoppers of the genus Xistra Bolívar, 1887 (Orthoptera: Tetrigidae: Metrodorinae)

The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)

Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan, with descriptions of a new genus and four new species

Is it time to describe new species without diagnoses?—A comment on Sharkey et al. (2021)

Cherax latimanus sp. nov., a new burrow-dwelling freshwater crayfish (Decapoda, Parastacidae) from the mid-Murray River catchment, Australia

Scyliorhinus hachijoensis, a new species of catshark from the Izu Islands, Japan (Carcharhiniformes: Scyliorhinidae)

A new species of the unusual leafhopper genus Phlogis Linnavuori (Hemiptera: Cicadellidae: Signoretiinae) from Uganda

A new species of nine-spined stickleback, Pungitius modestus (Gasterosteiformes, Gasterosteidae), from northern Honshu, Japan