Phlyctinus callosus

Body integument dark red, head and prothorax darker, usually black. Rostrum longer than wide (w/l ratio 0.68 in both sexes), at base 1.05× as wide as at apex, sides slightly concave near middle; epifrons as wide as one eye, narrower at base than distance between eyes, sides subparallel, upper face with a longitudinal carina from basal transverse groove to nasal plate; antennal scrobes slightly curved, directed to middle of eye, separated by a strip of scales narrower than eye diameter; forehead with a short longitudinal furrow between eyes, scales and setae arranged centripetally. Funicle with segments 1–2 elongate, segment 1 shorter (0.65×) than 2, segments 3–6 longer than wide, conical, shortening apicad, segment 7 longer and slightly wider than 6. Pronotum slightly wider than long (w/l ratio 1.16), widest slightly before middle, apical margin 0.68× as wide as base, sides rounded, apical half slightly concave; integument with dense elongate granules orientated parallel to median carina, with two slight depressions on each side; median carina raised, smooth, shiny, not reaching margins. Elytra with sides convex, widest before middle (w/l ratio 0.76 in male, 0.80 in female), integument weakly reticulate, shiny; interstriae raised, 2–4× as wide as striae in basal half; each interstria with a series of semi-erect, elongate whitish scales, condensed on callosities. Vestiture of elytra a mixture of elongate scales twice as long as wide and smaller scales 4–5× as long as wide, not concealing integument. Tibiae straight, unarmed, slightly bisinuate on ventral side, apical setal comb equal in length, golden. Ventrite 1 as long as 2+3+4, slightly convex in female, or concave with erect setae as long as claws in male; ventrite 5 slightly longer than 3+4, with erect setae and a small tubercle near apex in female, or with a large cavity in apical 2/3, with long erect setae condensed on margin of cavity forming two brushes, and a longitudinal line of short recumbent setae in cavity in male. Body of penis elongate, 0.7× as long as apodemes, sides convex, widest in basal half, converging towards apex and slightly narrowed before it (ratio w/l 0.45), in lateral view curvature weak, mainly in basal half and just before apex. Copulatory sclerite with left arm as long as body, bearing setae at base, comb of right arm with setae parallel, right area of body wider than left area. Sternite VIII with plate subtriangular in dorsal view, apically sharply pointed, widest near basal half, in lateral view lanceolate, widest near middle, anterior margin well developed, glabrous, posterior margin ill-defined up to middle of plate. Gonocoxites long, flat, sides converging apicad, rounded at apex, with long apical styli 4× as long as wide, bearing long apical setae. Nasal plate V-shaped, reaching level of antennal insertion basally, bare of scales, with only minute setae in scattered punctures and 3 pairs of long setae apically near insertion of mandibles (2 short and 1 very long).

Literature