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Ptilodactylidae Level 1 Level 2
|Key Characters (adult)||
Ptilodactylid beetles. Only two aquatic/semiaquatic genera in the Western US (Anchycteis and Araeopidius); also many strictly terrestrial taxa. Adults are terrestrial and found in riparian vegetation. Body elongate, up to 16 mm; antennae 11-segmented and filiform, serrate or pectinate (segments with long, lateral extensions); pronotum rounded anteriorly, crenulate posteriorly; 5 visible abdominal sternites, the 5th emarginate.
|Key Characters (larva)||
Larvae of Anchycteis and Araeopidius are aquatic to semiaquatic, usually found in wetted mosses or moist leaf packs in spring seeps or small, headwater streams. Larvae elongate, subcylindrical; no abdominal gills; abdomen with 9 distinct segments; with or without small urogomphi; operculum absent; hooks present along with anal lobes.