Lophomilia fusca, Sohn & Ronkay, 2011

Sohn, J. - C. & Ronkay, L., 2011, Two New Species Of Lophomilia Warren, 1913 (Lepidoptera: Noctuidae, Hypeninae) From Asian Tropics, Acta Zoologica Academiae Scientiarum Hungaricae 57 (2), pp. 131-137 : 132-134

Lophomilia fusca sp. n.

( Figs 1–2 , 6–7, 10 )

Type material. Holotype: male, Hueisun Exp[erimental] Forest, Nantou, Taiwan, 22–24.X. 1998, leg. MEY & EBERT. Genitalia slide No. RL 10070m. The holotype is deposited in the Museum für Naturkunde , Leibnitz Institut für Evolution und Biodiversitätsforschung (formerly Museum für Naturkunde, Humboldt-Universität; ZMHU), Berlin, Germany.

Paratypes: 1 male and 1 female with the same data as the holotype; slide Nos RL 7633m, 10107f (coll. ZMHU Berlin) ; 1 male, Taiwan, Taichung Co., Anmashan Mt , 2275 m, 9.VII.1996, leg. C. M. FU (coll. FU) .

Diagnosis. This new species belongs to the L. polybapta species-group, being superficially closest to L. rustica KONONENKO et BEHOUNEK, 2009 , described from East and South China, but it is easily distinguished from the latter by dark fuscous colour of forewings with sinuous postmedian line and less protruding apex.

The autapomorphies of the new species are: i) the very short, lanceolate uncus (the only similar species in this respect is L. albicosta YOSHIMOTO, 1993 ); ii) the extremely short tegumen and the enormously long vinculum; iii) the specially modified, very long and dorsally bird-head-like sclerite connecting tegumen and vinculum; iv) the rather deeply incised terminal margin of the valva; v) the symmetrical, more or less boot-shaped distal end of the clasper; vi) the huge, heavily sclerotised, symmetrical ostium–anthrum complex with sinuous posterior margin and large, ear-shaped postero-lateral flaps; and vii) the posteriorly evenly dilated, medio-laterally folded, flattened and heavily sclerotised ductus bursae. All other congeners have a remarkably longer uncus and tegumen, shorter vinculum, a flat, more or less bean-shaped sclerite, and differently shaped valva and clasper. General configuration of valva and clasper of L. fusca sp. n. is most similar to those in L. kobesi KONONENKO et BEHOUNEK, 2009 , but with easily recognisable differences; the detailed comparison of male genitalia of the two related species reveals substantial differences in the above-mentioned features.

Description. External morphology ( Figs 1–2 ) – Wingspan 26–27 mm. Head: vertex with hair-like scales appressed, dark brown with brownish grey tip; frons brownish white. Antennae lost in the present specimen; scape dark brown dorsally, brownish white ventrally. Labial palpi porrect; 1st segment 1/2 as long as eye diameter, dark brown on exterior surface, tinged with yellowish white around base and on interior surface; 2nd segment three times longer than 1st, evenly thick throughout, dark brown except white on basal 2/3 of interior surface; 3rd segment 1/2 as long as 2nd, dark brown, with obtuse, white apex. Thorax and abdomen: patagia brownish grey; tegulae dark brown, thin-edged with brownish white along posterior margin; a black tuft on anterior part of mesoscutum; mesonotum dark brown; mesoscutellum with a large, black tuft posteriorly. Forelegs, coxa dark brown, densely covered with white hairs; femur dark brown sparsely intermixed with white dorsally, white ventrally; tarsomeres dark brown dorsally, white ventrally, with a brownish white ring on each distal end. Midlegs same as forelegs except with remarkably thickened tibiae. Hindleg coxa brownish white; femur to tarsus greyish brown dorsally, brownish white ventrally; tibiae and tarsomeres with a whitish brown ring on each distal end. Forewing length 12–12.5 mm (n = 2), triangular, with slightly sinuous termen, angled apex and oblique tornus, fuscous; antemedial line brownish black, oblique, bent on anterior 1/3, bordered inward with light brown; postmedial line, perpendicular to costa, sinuate by veins, adjoined interiorly with a brown dotted line on dorsal area; reniform spot on distal end of cell, yellowish white; subterminal line irregularly sinuate, diffused inward with brownish black; marginal line black, dotted by veins; fringes dark brown, bordered inside with light brown. Hindwing flabellate, dark brownish grey, darker to distal margin; fringes greyish brown. Abdomen yellowish grey dorsally, brownish white ventrally.

Male genitalia ( Figs 6–7 ) – Uncus medium-long, 1/2 as long as juxta, lanceolate, falcate apically. Tegumen very short, subtriangular; connecting sclerite between tegumen and vinculum with tooth-like projection outward, recurved above articulation, appearing as a head of a bird. Transtilla broad, with wide, medial cleavage; vinculum extremely long, its ventral section V-shaped, medial section almost parallel, but with slightly constricted sides, dorsal section curved outwardly and connected to tegumen. Juxta an inverted, high trapezoid plate, with a small triangular projection on lower margin and bifid upper margin; saccus small, hump-like. Valva elongate, gradually broadened distally, with terminal margin concave medially; clasper on distal 1/3 of valva, boot-shaped, connected with a narrow, band-like, sclerotized zone directed to valval base; costa thin, except basally; sacculus slightly broadened on basal 1/5, thereafter thin. Aedeagus thick, cylindrical; coecum narrower than aedeagus; carina thin, with an outward spine; proximal part of vesica granulated, with two spinulated zones, medial zone part globular, with a densely granulated diverticula, distal zone part thin, tubular.

Female genitalia ( Fig. 10 ) – Ovipositor rather short and broad, cylindrical, only slightly tapering posteriorly; papillae anales broadly quadrangular, finely setose; both pairs of gonapophyses short, straight. Ostium–antrum complex huge and heavily sclerotised, very broad, more or less quadrangular, with large, finely pointed, ear-like postero-lateral flaps and smaller, medially finely incised postero-medial hump. Ductus bursae relatively long, flattened, strongly sclerotised, distal half trapezoidal, proximal half considerably narrower, with larger medio-lateral fold. Appendix bursae rounded conical, ample, finely wrinkled; corpus bursae spacious, sacculiform, without sclerotised section or signum.

Distribution. Taiwan.

Etymology. The species name, fusca , is derived from the Latin adjective ‘ fuscus ’, meaning

‘dark-coloured’ and refers to the dark fuscous forewings of the new species.

Figures

Figs 1–5. Two new species of Lophomilia. 1–2 = L. fusca sp. n.: 1 = holotype, 2 = paratype; 3–5 = L. posteburna sp. n.: 3 = holotype, 4–5 = paratypes

Figs 6–10. Genitalia of the two new Lophomilia species: 6–7 = L. fusca sp. n., male, paratype; 8–9 = L. posteburna sp. n., male, holotype; 10 = L. fusca sp. n., female, paratype, genitalia