Oxypyge Silvestri, 1896

Oxypyge Silvestri 1896. Bollettino dei Musei di Zoologia ed Anatomia comparata della R. Università di Torino. 11(254):4. Type species: Oxypyge varicolor Silvestri, 1896, by monotypy (holotype deposited in Museo di Zoologia. Instituto di Zoologia e Anatomia Comparata Universitá di Torino). Hoffman 1999. Checklist of the Millipeds of North and Middle America. p. 94.

Zipyge Chamberlin 1925. Proceedings of the Biological Society of Washington. 38:40. Type species: Oxypyge ferruginipes Chamberlin, 1922. Proceedings of the U.S. National Museum. 60(8): 27, by original designation. syn. nov.

Oxypygides Chamberlin 1922. Proceedings of the U.S. National Museum. 60(8):24. Type species: Oxypygides mesites Chamberlin, 1922. Proceedings of the U.S. National Museum. 60(8):25, by original designation. Hoffman 1999. Checklist of the Millipeds of North and Middle America. p. 95. syn. nov.

Diagnosis: Males with a simple, unmodified anterior gonopod (Figs. 1,2). Telopodite of posterior gonopod long (Fig. 3), extending 2–3 millimeters beyond modified sternal tergite (Fig. 4). Distal most aspect of telopodite acutely spatulate (differing from that of Eurhinocricus which is spatulate along its entire length). Solenomere slender (Fig. 3, Sm). Most specimens with anal valves of epiproct elongate and armed with a dorsal hook or acute point (Figs. 5, 6). Antennae with 4 to numerous sensory cones. First ring segment (segment after collum) ventrally unmodified or modified with a distinct pit (2 species previously attributed to Oxypygides; see below).