High degree of non-genetic phenotypic variation in the vascular system of crayfish: a discussion of possible causes and implications Stephan ScholzTorben GöpelChristian S. Wirkner Original Paper Open access 12 August 2021 Pages: 317 - 329
Evolutionary morphology of the antennal heart in stick and leaf insects (Phasmatodea) and webspinners (Embioptera) (Insecta: Eukinolabia) Benjamin WipflerSven BradlerGünther Pass Original Paper Open access 01 June 2021 Pages: 331 - 340
Fight or fright: potential drivers of body size evolution in Cimbicidae (Insecta, Hymenoptera) Lars VilhelmsenVasileia Chatzaki Original Paper 07 July 2021 Pages: 341 - 352
The intraspecific variability of Colias croceus (Geoffroy, 1785) and C. erate (Esper, 1805) (Lepidoptera, Pieridae) from the perspective of comparative morphology Maroš DzurinkaMarko MutanenĽubomír Panigaj Original Paper 26 July 2021 Pages: 353 - 363
Clasper pocket: adaptation of a novel morphological feature by lamnoid sharks, which aids with tuna-like swimming Taketeru TomitaMasaru NakamuraKeiichi Sato Original Paper 09 July 2021 Pages: 365 - 371
Comparative osteology of the superfamily Congiopodoidea (Pisces: Scorpaenoidei) Olga S. VoskoboinikovaMikhail Yu. Zhukov Original Paper 28 August 2021 Pages: 373 - 385
Morphological comparison of the feeding apparatus in herbivorous, omnivorous and carnivorous mudskippers (Gobiidae: Oxudercinae) Loi X. TranYu MaekawaAtsushi Ishimatsu Original Paper 17 June 2021 Pages: 387 - 404
Inter- and intraspecific variability of morphometric parameters of rodent spermatozoa G. Yu. SmirnovM. V. ModorovYu. A. Davydova Original Paper 11 June 2021 Pages: 405 - 418
Correction to: Inter‑ and intraspecific variability of morphometric parameters of rodent spermatozoa G. Yu. SmirnovM. V. ModorovYu. A. Davydova Correction 09 July 2021 Pages: 419 - 419