Contribution to the knowledge of the immature stages of Palaearctic species of the genus Anthonomus Germar (Coleoptera: Curculionidae)
Revision of the mining bee subgenus Andrena (Longandrena) (Hymenoptera: Apoidea: Andrenidae)
Redescriptions of three species of freshwater crabs from Angola, southern Africa (Brachyura: Potamoidea: Potamonautidae)
Seven new Otacilia Thorell, 1897 species from China (Araneae: Phrurolithidae)
Multiple records and polymorphism of Parastichopus regalis (Cuvier, 1817) (Echinodermata: Holothuroidea: Stichopodidae) along the Algerian coast
New illustrations, new species and new combination of Hemacroneuria Enderlein (Plecoptera: Perlidae) from China
One new and one newly recorded species of the genus Alneotidia Dlabola (Hemiptera: Auchenorrhyncha: Cicadellidae: Typhlocybinae) from the Korean Peninsula with key to Korean species
A new species of Lasioseius (Acari: Blattisociidae) from Brazil with morphological and DNA barcode data
Erratum: STEPHANY ARIZALA, FACUNDO MARTÍN LABARQUE & DANIELE POLOTOW (2021) Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae: Acanthocteninae). Zootaxa, 4920: 001–055.
