Leptinidae LeConte, 1872: 802 Leptinus Müller, 1817 Platypsyllidae LeConte, 1872: 799 Platypsyllus Ritsema, 1869 An Annotated Catalog of the Leiodidae (Coleoptera) of the Nearctic Region (Continental North America North of Mexico) Peck, Stewart B. Newton, Alfred F. The Coleopterists Bulletin 2017 2017-06-27 71 2 211 258 Ritsema, 1869 b Ritsema 1869 [173,448,1603,1624] Insecta Platypsyllidae GBIF Animalia Coleoptera 37 247 Arthropoda family   Typegenus:  PlatypsyllusRitsema, 1869.  Notes.Worldwide, the subfamily contains only four genera:  LeptinusMüllerwith six Palearctic and three Nearctic species;  LeptinillusHornwith two Nearctic species;  SilphopsyllusOlsufievwith one Palearctic species; and  Platypsylluswith one Holarctic species. The extreme flea- or louse-like modifications of  Platypsyllus, for living in the fur of beaver, led to its original placement in a separate family and order. The platypsyllines may be allied with the Cholevinaeand share derived family characters of Leiodidae, so they may be suitably placed as a subfamily of the Leiodidae(Lawrence and Newton 1982, 1995). The unusual biology and morphology of this small ectoparasitic subfamily has stimulated a disproportionate number of research publications.   Distribution.Holarctic.   =  Leptinidae LeConte, 1872: 802[stem: Leptin-]. Typegenus:  Leptinus Müller, 1817.   Comment.This family-group name has been attributed to LeConte (1866)in the literature. However, Leconte (1866)did not give a name to the implied new taxon, and therefore it is not available (Newton and Thayer (1992). =Achreioptera Westwood, 1869: 118(as order; unavailable, not based on a genus; for  Platypsyllus Westwood, 1869, not Ritsema, 1869).   =  Platypsyllidae LeConte, 1872: 799. Typegenus:  PlatypsyllusRitsema, 1869.