Rostrum variations in Macrobrachium nipponense from southwestern Ukraine, Solomonov Branch, Danube. A typical form with 13 dorsal rostrum teeth, male, L = 81 mm; B atypical forms with 17 dorsal rostrum teeth and rounded rostrum, female, L =71 mm; C elongated rostrum of typical shape with 19 dorsal rostrum teeth, female, L = 68 mm. Photographs by S. Bushuiev.

 
 
  Part of: Bushuiev S, Snigirov S, Son MO, Sokolov I, Kharlov G, Kvach Yu (2023) Expansion of the alien East Asian river prawn Macrobrachium nipponense (De Haan, 1849) in southwestern Ukraine and assessment of its commercial usage prospects. Aquatic Invasions 18(2): 231-246. https://doi.org/10.3391/ai.2023.18.2.104092