Pycnogonidae; A, B: Pycnogonum nodulosum, female, dorsal view; scales 1 mm and 500 µm, respectively; C, D:Pycnogonum (Retroviger) pusillum, male, dorsal and ventral view, respectively; scales 250 µm.

 
 
  Part of: Lehmann T, Heß M, Melzer R (2014) Common littoral pycnogonids of the Mediterranean Sea. Zoosystematics and Evolution 90(2): 163-224. https://doi.org/10.3897/zse.90.7520