Taxonomic revision of the Campoplex difformis group(Ichneumonidae, Campopleginae), with particular reference tospecies of economic importance
Filippo DI GIOVANNI et al.
1-35, Published on 22 March 2021, art. 740 (1)
Three new species of Eusarcus Perty, 1833 (Opiliones, Gonyleptidae) from Brazilian caves
Gilson Argolo dos SANTOS JÚNIOR et al.
36-54, Published on 23 March 2021, art. 740 (36) 
Two new tanaidaceans (Crustacea: Peracarida) from Portuguese submarine canyons (NE Atlantic, West Iberian Margin)
Álvaro GARCÍA-HERRERO et al.
55-76, Published on 23 March 2021, art. 740 (55) 
First records and two new species of sipunculans (Sipuncula) from the Southern Mexican Pacific
Itzahí SILVA-MORALES & Julio D. GÓMEZ-VÁSQUEZ
77-117, Published on 25 March 2021, art. 740 (77) 
A new species of Mesopolobus (Hymenoptera, Pteromalidae) from black locust crops
Zoltán LÁSZLÓ et al.
118-137, Published on 26 March 2021, art. 740 (118) 
Revision of Sthenelais Kinberg, 1856, Fimbriosthenelais Pettibone, 1971 and Eusthenelais McIntosh, 1876 (Polychaeta, Sigalionidae)in the Northeast Atlantic
