ABSTRACT
Lophioderus; clypeofrontal region moderate in length and slightly narrowed anteriorly. Eyes anterior, median, or posterior; moderate in size, or absent, as in Cephennium anophthalmicum. Antennae inserted anterior to eyes, antennal insertions adjacent to widely separated; antennae composed of scape, pedicel and 9 flagellomeres; antennal club composed of distal 3 to 5 antennomeres, from indistinct to distinct in form. Vertex rounded, impressed (Brachycepsis, Parascydmus), excavated (Taphroscydmus), foveate (Veraphis), to highly sculptured (Chevrolatia). Mandibles usually planar, subtriangular with large basal area, narrowed to acute incisor, subapical teeth absent, although present in Papusus; prostheca present in most genera, quite varied in form; retinaculum present in many genera. Maxillary palpus composed of 4 palpomeres; palpomere III large, clavate; palpomere IV variable, although distinctly smaller than III (Figs. 26.2-8); apices of lacinea and galea densely covered with long setae. Labial palpus composed of 3 palpomeres; palpomeres II and III varied in form; mentum large.
