Couplet 168

168a:  Fore coxal cavity usually open behind; terminal maxillary palpomere narrow, elongate; if fore coxal cavity closed behind, then closed by mesal extension of hypomeron; length < 3 mm and pronotum somewhat narrowed near base (Cryptophilus)

Languriidae   p. 431

168b:  Fore coxal cavity closed behind by lateral expansion of prosternal process; terminal maxillary palpomere often hatchet-shaped, or narrow and elongate; length 3-22 mm