Two new species of Liodessus Guignot, 1939 diving beetles from Northern Peru (Coleoptera, Dytiscidae, Hydroporinae)

Two new species of Liodessus Guignot, 1939 diving beetles from Northern Peru (Coleoptera, Dytiscidae, Hydroporinae)

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The diving beetles Liodessus altoperuensis sp.nov.and Liodessus caxamarca sp.nov.(Dytiscidae, Hydroporinae, Bidessini) are described from the high altitudes of the Puna regions of north western Peru.

They occur in shallow and exposed mossy peatland redken shades eq dark chocolate puddles.We delineate the two species using structures such as male blue banana gorra genitalia, beetle size, shape and colour pattern.Mitochondrial Cox1 data were also generated, and revealed clusters congruent with morphological evidence.Altogether fourteen Liodessus species are now known from the Andean region.