Measuring proboscis length in Lepidoptera: a review Flóra VajnaJános KisViktor Szigeti Review Open access 22 November 2020 Pages: 1 - 15
Correction to: Measuring proboscis length in Lepidoptera: a review Flóra VajnaJános KisViktor Szigeti Correction Open access 23 January 2021 Pages: 17 - 17
Ultrastructure of spermatozoa and female copulatory organs in preferably asexually-reproducing acoel Convolutriloba retrogemma (Acoelomorpha) Y. I. ZabotinV. G. Evtugyn Original Paper 11 November 2020 Pages: 19 - 26
Comparative ultrastructure of the radiolar crown in Sabellida (Annelida) Ekin TilicGreg W. RouseThomas Bartolomaeus Original Paper Open access 07 December 2020 Pages: 27 - 45
Ontogeny of non-muscular brachial articulations in Balanocrininae (Echinodermata, Crinoidea): iterative trajectories or phylogenetic significance? Nadia AmézianeMarc EléaumeMichel Roux Original Paper 04 January 2021 Pages: 47 - 67
Digestive tract regeneration in the posteriorly eviscerating sea cucumber Holothuria parva (Holothuroidea, Echinodermata) Mina EisapourNegin SalamatAmir Parviz Salati Original Paper 20 January 2021 Pages: 69 - 83
Attachment devices and the tarsal gland of the bug Coreus marginatus (Hemiptera: Coreidae) Manuela ReboraGianandrea SalernoStanislav N. Gorb Original Paper Open access 23 January 2021 Pages: 85 - 102
Diversity and sexual dimorphism in the head lateral line system in North Sea populations of threespine sticklebacks, Gasterosteus aculeatus (Teleostei: Gasterosteidae) Harald AhneltDavid RamlerSonja Windhager Original Paper Open access 30 December 2020 Pages: 103 - 117
Ontogenetic development of the shoulder joint muscles in frogs (Amphibia: Anura) assessed by digital dissection with implications for interspecific muscle homologies and nomenclature Karolin EngelkesSupak PanpengAlexander Haas Original Paper Open access 16 February 2021 Pages: 119 - 142
Hemipenial morphology of Epictia vellardi (Laurent, 1984) (Leptotyphlopidae, Serpentes) with the proposition and discussion of two general hemipenial patterns within the genus Epictia Ana Carolina FerreiraJulia KlaczkoAngele Martins Original Paper 23 November 2020 Pages: 143 - 150
Foveal shape, ultrastructure and photoreceptor composition in yellow-legged gull, Larus michahellis (Naumann, 1840) N. VictoryY. SegoviaM. García Original Paper 08 February 2021 Pages: 151 - 167
Does the osteon morphology depend on the body mass? A scaling study on macroscopic and histomorphometric differences between cow (Bos taurus) and sheep (Ovis aries) Marco ZeddaRamona Babosova Original Paper Open access 10 February 2021 Pages: 169 - 181