Trichadenotecnum longilingum Yoshizawa & Aldrete & Mockford 2008, SP. NOV.

Material examined: Holotype. Male, Mexico: Hidalgo, 15 mi W. Huauchinango Rd. 130, 24.vi.1962, ELM, J. Campbell, F. Hill (ISU). Paratypes. 2 males, 4 females, same data as holotype (ISU).

Etymology: The specific epithet is taken from the Latin longus (= long) + lingua (= tongue), refering to the narrow and elongate hypandrial median tongue of this species.

Description: Male. Head. White in ground colour; vertical and orbital markings dark brown; coronal suture black; frontal suture dorsally bordered with narrow pale brown band; frons with pair of dark brown bands medially and pair of small brown spots laterally; gena mostly brown with white portion medially; eye black, rather large, IO/D = 1.0; ocelli white, ocellar field black; antennal socket bordered with dark brown band; postclypeus with c. eight rows of brown spots dorsal to median region, ventrally with blackish brown marking medially, ventro-lateral corner white; anteclypeus brown. Antenna pale brown, pedicel and scape darker. Mouth parts brown.

Thorax. Prothorax brown. Meso- and metathorax mostly dark brown except membranous region white; dorsal surface of mesonotum mostly white, with pale brown markings; mesopleuron with longitudinal white band medially.

Legs. Brown; distal half of fore femur and tibiae of all legs paler.

Forewing (Fig. 5D). Rather sparsely spotted. Spots in cell a 1 distinct, distal spot larger. Opposing spots in cell r indistinct. Proximal band faint, darker and distinct in cell CuP and Rs-M fusion, very narrow in cell CuA. Distal band distinct, broad. Spot on roof of cell m 3 very small, hardly distinct. Submarginal spots distinct, spot in cell r 5 larger, spot in cell m 3 somewhat indistinct. Marginal clouds indistinct except ends of veins. Hindwing. Hyaline, cell CuP and distal region of cells r 1 and r 3 with faint sparse spots; veins brown.

Abdomen. White, each segment with broad brown band ventrally. Terminalia. Clunial arm long and broad, distal end narrow but rounded. Epiproct lobe (Fig. 11A) broad, shorter than basal width, sharply narrowing to narrow and rounded dorsal margin. Hypandrium (Fig. 11B): left process conical, strongly projected postero-laterally, slightly curved; right process triangular, projected postero-internally; median process long and narrow, broadest at basal 1/9, gradually narrowing to basal third, then nearly parallel sided to apex; apical margin shallowly hollowed. Phallosome (Fig. 11C): pseudoparameres short and broad, expanded laterally, almost fused medially with shallow hollow between them. Phallobase narrowing anteriorly, with pointed anterior end.

Length. B 3.1–3.3; FW 4.2–4.4; HW 3.2–3.4.

Female. Colour and general morphology almost as in male; eye IO/D = 2.2. Genitalia: Egg guide of subgenital plate broad (Fig. 12A), broader than long, anterior margin almost straight, lateral margins near distal end nearly parallel sided, anterior margin of body of subgenital plate shallowly hollowed, and with rather broad median notch. Internal plate as in Figure 12B.

Length. B 3.2–3.6; FW 4.2–4.6; HW 3.2–3.4.

Distribution: Mexico.