Lectotype designations taxonomic notes and new synonymies in some species of the bee genus Centris Fabricius, 1804 described by Frederick Smith (Hymenoptera: Apidae)
Is Copytus Skogsberg, 1939 (Crustacea: Ostracoda) a neocytherideid? With description of a new family and two new species
A new species of the genus Gonatodes (Squamata: Sauria: Sphaerodactylidae) from the western flank of the Cordillera Oriental in Colombia, with description of its hemipenial morphology
Taxonomic revision of the Protopolybia picteti-emortualis species-group (Richards, 1978), with descriptions of two new species (Hymenoptera: Vespidae, Polistinae)
Two more new Hemiphyllodactylus Bleeker, 1860 (Squamata: Gekkonidae) from Tamil Nadu, India
A deeply divergent lineage of Walkerana (Anura: Ranixalidae) from the Western Ghats of Peninsular India
The imaginal and detailed nymphal characters of Cincticostella fusca (Kang & Yang, 1995) (Ephemeroptera: Ephemerellidae)
An unusual new genus and species of centrotine treehopper (Hemiptera: Membracidae: Centrotinae) from Nicaragua
Two new genera of long clawed Isohypsibioidea Guil, Jørgensen & Kristensen, 2019
