Figure 18 from: Bilton DT, Ribera I (2017) A revision of Meladema diving beetles (Coleoptera, Dytiscidae), with the description of a new species from the central Mediterranean based on molecules and morphology. ZooKeys 702: 45-112. https://doi.org/10.3897/zookeys.702.14787

Figure 18 - Meladema species, Italy, male elytral sculpture; shoulder and middle left and right, respectively (DNA voucher codes, where applicable). A M. lepidoptera sp. n., Liguria, Levante B intermediate specimen, Campania, S. Michele (IBE-AN694) C intermediate specimen, Apulia, Vieste D M. coriacea, Lazio, Grotta di Pastena. Scale bar = 0.5 mm.