1. Reinhard Rieger Award

   • Andreas Schmidt-Rhaesa

   Editorial Open access 07 August 2020 Pages: 291 - 291

2. D’Arcy W. Thompson’s Cartesian transformations: a critical evaluation

   • Gerhard Scholtz
   • David Knötel
   • Daniel Baum

   Original Paper Open access 27 June 2020 Pages: 293 - 308

   

3. Sperm characteristics in the digenean Diplodiscus amphichrus (Paramphistomoidea, Diplodiscidae), a parasite of the Chinese edible frog Hoplobatrachus rugulosus

   • Papa Mbagnick Diagne
   • Alexis Ribas
   • Jordi Miquel

   Origina lPaper 22 May 2020 Pages: 309 - 317

   

4. Ultrastructure of the spermatozoon of Lecithostaphylus parexocoeti (Digenea, Microphalloidea, Zoogonidae) parasite of the flying fish Cheilopogon pinnatibarbatus (Teleostei, Exocoetidae) off Senegal and their implication on the phylogenetic relationships in Microphalloidea

   • Aïssatou Bâ
   • Abdoulaye J. S. Bakhoum
   • Yann Quilichini

   Original Paper 10 June 2020 Pages: 319 - 326

   

5. Comparative morphology of antennal surface structures in pleurostict scarab beetles (Coleoptera)

   • Claudia Bohacz
   • James du G. Harrison
   • Dirk Ahrens

   Original Paper Open access 28 June 2020 Pages: 327 - 346

   

6. Comparative morphology of the antennal “release and spread structure” associated with sex pheromone-producing glands in male Cynipoidea

   • Carlo Polidori
   • Alberto Jorge
   • José L. Nieves-Aldrey

   Original Paper 23 May 2020 Pages: 347 - 360

   

7. Variation in external morphology between the native and invasive populations of the round goby, Neogobius melanostomus (Actinopterygii: Gobiidae)

   • Dimitriy Dashinov
   • Przemysław Czerniejewski
   • Eliza Uzunova

   Original Paper 22 April 2020 Pages: 361 - 371

   

8. Morphology and intraspecific variation in the skull and mandible of the slider turtle Trachemys dorbigni (Testudines, Emydidae)

   • Priscila Rockenbach Portela
   • Róger Jean Oliveira
   • José Eduardo Figueiredo Dornelles

   Original Paper 27 May 2020 Pages: 373 - 384

   

9. Amerotyphlops brongersmianus (Vanzolini, 1976) (Typhlopidae, Serpentes) as a model for scolecophidian ontogenetic shifts of heart topography and relative size

   • Angele Martins
   • Laryssa Silva
   • Rodrigo C. Gonzalez

   Original Paper 07 June 2020 Pages: 385 - 392

   

10. Variability in the number of mental foramina in the African green monkey (Grivet) (Chlorocebus aethiops)

    • Kamil Mrożek
    • Justyna Marchewka
    • Henryk Głąb

    Original Paper Open access 07 April 2020 Pages: 393 - 405

    

11. Aging-related histomorphometric changes in cortical bone tissue of bottlenose dolphins (Tursiops truncatus)

    • Manuela Zadravec
    • Nadica Maltar-Strmečki
    • Martina Đuras

    Original Paper 06 April 2020 Pages: 407 - 420

    

12. Adapting spherical-harmonics-based geometric morphometrics (SPHARM) for 3D images containing large cavity openings using ambient occlusion: a study with hermit crab claw shape variability

    • Yannic C. Ege
    • Christian Foth
    • Stefan Richter

    Methods Paper Open access 21 April 2020 Pages: 421 - 432