Bisnius fimetarius (Gravenhorst)

(Figs 1–3, 41–42, 52, 61, 62)

Body length: 3.57–4.40 mm (mean 4.16 mm); body width: 1.43–1.84 mm (mean 1.67 mm); head width: 0.80–1.24 mm (mean 1.03 mm); pronotum width: 1.11–1.17 mm (mean 1.15 mm), about 1.1 x as broad as long; body moderately stocky and weakly sclerotized. Antennae reaching to about half of elytra length (Fig. 2). Anterior margin of pronotum with 10–14 projections (6/6, 7/7, 7/7, 5/5, 7/5, 6/5, 6/5 projections on sides in individuals). Wings almost reaching the posterior margin of 1st (morphologically 3rd) clearly visible abdominal segment (Figs 1, 2). Each fore, middle, and hind tibiae with 5, 8–10, and 6 protuberances respectively. Tarsi of hind legs slightly protruding from anterior margin of 4th (morphologically 6th) clearly visible abdominal segment (Figs 1, 2). Abdomen moderately and gradually widened from segment II to IV and narrowed to the terminal part of the body (Fig. 3). Abdominal tergites with microstructure as in G. osseticus (Fig. 19 A). Abdominal segments VII and VIII each bearing a pair of setiform projections on sides, projections similar in length and structure to these one in G. osseticus (Figs 19, 20). Terminal sternite of female pupa with two well-developed ventral prolongations (Fig. 41); in male pupa sternite IX as in Fig. 42; ventral and terminal prolongation with numerous, sharp, cuticular processes (Figs 41A, B). The first pair of functional spiracles elongated, gradually narrowed apically, almost as long as wide (Fig. 52); atrophied spiracles as in Figs 61, 62.