Pectotibialis paghmanensis Tshernyshev gen. nov. – a new genus and species of soft-winged flower beetle (Coleoptera, Cleroidea, Malachiidae) from Afghanistan
Two novel species of subgenus Russula crown clade (Russulales, Basidiomycota) from China
Yu SONG et al.
15-33, Published on 15 October 2021, art. 775 (15)
A new genus and five new species of Neocoelidiinae leafhoppersfrom Brazil (Insecta: Hemiptera: Cicadellidae) with a key to males
Clayton C. GONÇALVES & Alexandre C. DOMAHOVSKI
34-61, Published on 18 October 2021, art. 775 (34) 
Review of the genus Chinoperla Zwick, 1980 (Plecoptera: Perlidae: Perlinae) from China
Rao-Rao Mo et al.
62-85, Published on 19 October 2021, art. 775 (62) 
Taxonomic revision of the Deltohyboma Lane, 1946 gilli species group (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilum)
Arturo GONZÁLEZ-ALVARADO & Fernando Z. VAZ-DE-MELLO
86-106, Published on 20 October 2021, art. 775 (86) 
Description of Cystodiscus elachistocleis sp. nov. (Cnidaria: Myxosporea) parasitizing the gallbladder of Elachistocleis cesarii from Brazil, based on morphological and molecular analyses
Diego Henrique Mirandola Dias VIEIRA et al.
107-118, Published on 21 October 2021, art. 775 (107) 
Molecular phylogeny reveals a new genus of freshwater mussels from the Mekong River Basin (Bivalvia: Unionidae)
Ekgachai JERATTHITIKUL et al.
119-142, Published on 22 October 2021, art. 775 (119) 
On the origin and diversification of the stygobiotic freshwater snail genus Hauffenia (Caenogastropoda: Hydrobiidae) with special focus on the northern species and the description of two new species
Martin HAASE et al.
143-184, Published on 25 October 2021, art. 775 (143) 
First discovery – and a new species – of Coelogynopora (Platyhelminthes, Proseriata) in the Southern Hemisphere
Odile Volonterio & Rodrigo Ponce de León
185-196, Published on 26 October 2021, art. 775 (185) 
