Leiopus Audinet-Serville, 1835

Wallin, Henrik, Kvamme, Torstein & Lin, Meiying, 2012, A review of the genera Leiopus Audinet-Serville, 1835 and Acanthocinus, Dejean, 1821 (Coleoptera: Cerambycidae, Lamiinae, Acanthocinini) in Asia, with descriptions of six new species of Leiopus from China, Zootaxa 3326, pp. 1-36 : 5

Subgenus Leiopus Audinet-Serville, 1835

Redescription: Antennae in males up to twice as long as body, antennomeres II–V not fimbriate beneath (may have a few sub-erect hairs). The prosternal process mostly relatively narrow, often less than half as wide as mesosternal process. Lateral spines placed near or a little behind the middle (as in Acanthocinus ). Elytra with appressed pubescence, the lateral elytral margins straight the first ½ and thereafter evenly curved toward outer apical angle, giving the appearance of less elongated elytra. Elytra sub-depressed and often curved from ¾ towards apex (seen from the side). Costae at best weakly developed. Each elytron at the base with a weak swelling. Legs short compared to Acanthocinus spp. Hind tarsi stout, with tarsomere I up to 1.4 x as long as tarsomeres II & III combined. Femora slender to slightly swollen. Male genitalia with elongated parameres: well separated along inner margin, base of tegmen narrow and distinctly bent on the middle, anterior margin of tergite VIII evenly curved or weakly notched. The sclerites inside the internal sac very short and vary in shape, but usually form a shaft with or without a distinct head (cf. Sama 1985). Prosternal process usually quite narrow, often less than half as broad as mesosternal process. Entire spermatheca well sclerotized, relatively short (approx. 0.4 to 0.6 mm long, as measured diagonally the longest distance from the base to the tip of the head) and weakly or acutely curved with a distinctly rounded or sharp head, but without any trace of a secondary shaft or “curl” connected to the head. The apex of sternite VII in females mostly straight but sometimes curved or, rarely, notched in the middle. Ovipositor very short, yellow to brown, and protruding only slightly beyond the last visible sternite.

Type species: Leiopus nebulosus ( Linnaeus, 1758) , type designation by Thomson (1864).