Couplet 95

95a:  Base of pronotum crenulate; scutellum usually medially notched on anterior margin; antennal insertion not elevated; mandible moderate and evenly curved; labrum large, sclerotized, and dorsal to mandibles

Ptilodactylidae   p.420

95b:  Base of pronotum simple; anterior margin of scutellum not notched; dorsal margin of antennal insertion elevated and protuberant; mandible large, abruptly curved mesad at nearly right angle; labrum either short and membranous or extending between and below mandibles