Maxillary palpus (a, a’ and aa), labial palpus of female (b, bb) and mandibles of male (c, cc, cc’). a–c Pterocheilus p. phaleratus (Panzer) a’ Pterocheilus c. chobauti Dusmet; aa–bb Onychopterocheilus mochii Giordani Soika cc Onychopterocheilus pallasii (Klug) cc’ Onychopterocheilus sp.