The larva of Rhyacophila palmeni McLachlan 1879 (Trichoptera: Rhyacophilidae) from Greece and Kosovo with notes on ecology and zoogeography including a key to the known Greek Rhyacophila larvae
The larvae of Rhyacophila tsurakiana Malicky 1984, Rhyacophila gudrunae Malicky 1972, and Rhyacophila biegelmeieri Malicky 1984, including an update for the larval key to the Greek species of genus Rhyacophila Stephens 1836 (Rhyacophilidae, Trichoptera)
New species of Dugdaleiella, gen. nov., Kozloviella, gen. nov., and Pfitzneriella Viette from upper elevation Andes of Ecuador and Peru (Lepidoptera: Hepialidae)
Redescription of two species of Coelotanypus (Kieffer) 1913 (Diptera: Chironomidae) in rivers of the Parano-Platense basin (Argentina, South America)
A new distinctive species of Barydesmus (Diplopoda, Polydesmida, Platyrhacidae) from Ecuador, with an annotated bibliographical checklist of the American Platyrhacidae
Gatesina colombiana n. gen. & n. sp. (Hymenoptera: Chalcidoidea, Eurytomidae), new Rileyinae associated with Myrcianthes (Myrtaceae) from Colombia
A new species of the genus Aporcelinus Andrássy, 2009 (Nematoda, Dorylaimida, Aporcelaimidae) from Costa Rica
New species and a new record of Entomobryinae (Collembola, Entomobryomorpha) from Amurskaya Region (the Far East of Russia)
Redescription and Natural History of the Mexican harvestman Diguetinus raptator Roewer, 1912 (Opiliones: Globipedidae), type species of the genus
The larva of Phyllogomphoides pugnifer Donnelly, 1979 (Odonata: Gomphidae)
Description of the larva of the genus Archaeopodagrion Kennedy, 1939 (Zygoptera: Philogeniidae)
Morphological remarks on Adelphydraena amazonica Perkins & Ribera, 2020 and new records of two other Hydraenidae from Brazil (Coleoptera)
Review of the genera Pristocera Klug and Pristepyris Kieffer (Hymenoptera: Bethylidae, Pristocerinae) of Russia and adjacent territories
A new species of Cephalaeschna Selys, 1883 (Odonata: Anisoptera: Aeshnidae) from Neora Valley National Park, West Bengal, India, with notes on C. acanthifrons Joshi & Kunte, 2017 and C. viridifrons (Fraser, 1922)
Two new species of Tingidae (Insecta: Heteroptera) from Papua New Guinea
Colimacoris joceliae, sp. nov. (Hemiptera: Miridae: Deraeocorinae: Hyaliodini): A new species from Panama, with a Key to the species of Colimacoris
Oiceoptoma tangi (Coleoptera: Silphidae: Silphinae), a new species of carrion beetle from eastern China
Claxtonia goni, a new species of Tardigrada (Heterotardigrada, Echiniscidae) from the island of Maui (Hawaiian Islands, U.S.A., North Pacific Ocean), with notes to the genus Claxtonia Gąsiorek & Michalczyk, 2019
Two new species of Coccomorpha (Hemiptera: Sternorrhyncha) collected from Japanese silver grass, Miscanthus sinensis (Poaceae) in Okinawa Island, Japan
Description of the adult and larva of Clunio balticus Heimbach, 1978 (Diptera, Chironomidae) from the seashore of Bergen (Norway)
The larva of Rhyacophila albardana McLachlan 1879, including a discriminatory matrix to the Rhyacophila larvae with comb-shaped gills of Austria, Germany and Switzerland (Rhyacophilidae, Trichoptera)
Larval Taxonomy and Distribution of Genus Hydropsyche (Trichoptera: Hydropsychidae) in Northwestern Algeria
A review of Solierella Spinola, 1851 (Hymenoptera, Crabronidae) from Iran with description of four new species
Two new species of Plistobunus from China (Opiliones: Laniatores: Epedanidae)
Systematic revision of the flatfish genus Peltorhamphus Günther, 1862 (Teleostei: Pleuronectiformes: Rhombosoleidae), including description of a new species from Southeastern New Zealand, with biological and ecological summaries for the species
Aurimastris, new genus of the treehopper tribe Amastrini (Hemiptera, Membracidae, Smiliinae)
Checklist of the dragonflies and damselflies (Insecta: Odonata) of Bangladesh, Bhutan, India, Nepal, Pakistan and Sri Lanka
Three new species of Protosticta Selys, 1885 (Odonata: Zygoptera: Platystictidae) from the Western Ghats, India, with taxonomic notes on P. mortoni Fraser, 1922 and rediscovery of P. rufostigma Kimmins, 1958