Revision of the Palaearctic Trachusa interrupta species complex (Apoidea: Anthidiini) with description of four new species
New Neotropical species of Lachesilla Westwood, in species group forcepeta (Psocodea: ‘Psocoptera’: Lachesillidae)
Five new species of Lamiogethes Audisio & Cline from China (Coleoptera: Nitidulidae: Meligethinae)
Sponges from Doumer Island, Antarctic Peninsula, with description of new species of Clathria (Axosuberites) Topsent, 1893 and Hymeniacidon Bowerbank, 1858, and a re-description of H. torquata Topsent, 1916
Redescription of Sphecapatoclea excisa Villeneuve, 1909 (Diptera: Sarcophagidae)
A new species of the genus Toleria Walker, [1865] from northern Vietnam and Laos with establishment of a new generic synonymy in Cissuvorini (Lepidoptera, Sesiidae)
A new species of Enosis Mabille, 1889 (Lepidoptera, Hesperiidae, Hesperiinae) from southern Brazil and notes on Enosis angularis (Möschler, 1877)
A new species of Hippomonavella (Bryozoa: Cheilostomata) from the Holocene and Recent of Argentina and Uruguay (Southwest Atlantic)
Suggestion of Spongia (Heterofibria) peddemorsi as replacement name for Spongia (Heterofibria) cooki Samaai, Pillay & Janson, 2019
Validation of Shoemakerella fissipro Ortiz, Capetillo & Winfield, from the Gulf of California, northeastern Pacific Ocean (Amphipoda: Amphilochidea: Lysianassidae)
