Fig. 4 Hydraena species aedeagi. A–B Hydraena reflexa Rey, Monte d in The colonisation of the Tyrrhenian Islands by Hydraena water beetles, with Hydraena reflexa Rey, 1884 reinstated as a valid species endemic to Corsica and Sardinia (Coleoptera, Hydraenidae)

Fig. 4 Hydraena species aedeagi. A–B Hydraena reflexa Rey, Monte d'Oro, Corsica; C–E Hydraena pygmaea Waterhouse; C Rio de las Hoyas, Albacete, Spain; D stream above Bacevo, Rila Mts., Bulgaria; E Ruddycleave Water, South Devon, UK. Scale bar = 100 μm