Irepacma abnormis, Wang & Li, 2005

Wang, S. & Li, H., 2005, The Genus Irepacma (Lepidoptera: Oecophoridae) From China, Checklist, Key To The Species, And Descriptions Of New Species, Acta Zoologica Academiae Scientiarum Hungaricae 51 (2), pp. 125-133 : 132-133

Irepacma abnormis sp. n.

( Figs 4 , 8 )

Holotype: male, Mt. Fanjing (27.55°N, 108.41°E), Guizhou Province, alt. 1390 m, 29.V.2002, leg. Xinpu Wang.

Diagnosis. This new species is closely allied to Irepacma weishana WANG et LI, 2002 , but may be distinguished from the latter by valva with dorso-proximal process much longer, sacculus asymmetrical, juxta somewhat U-shaped and aedeagus concave at apex.

Description: Adult ( Fig. 4 ). Wingspan 19.0 mm. Head, labial palpi and antennae pale yellow. Labial palpi longitudinally with a blackish line composed of black scales on ventral surface. Antennae with brown rings on dorsal surface. Thorax and tegulae blackish brown, mixed with yellow. Fore wings with ground colour somewhat lutescent, clothed with brown scales; costal margin slightly arched; termen more or less oblique; apex roundly protruding; cilia pale gray. Hind wings and cilia deep gray. Legs pale yellow; tarsi of fore legs with gray rings, tibiae and tarsi of mid legs mixed with pale gray hairs.

Male genitalia ( Fig. 8 ). Uncus very small and rounded, mound-like. Gnathos relatively large, somewhat ribbon-like, with anterior margin rounded. Tegumen short and broad, trapezoidal, deeply concave at anterior margin. Valvae elongate, basal 1/3 narrowed, widest at middle; costa gently arched, with naked edge; dorso-proximal process strongly sclerotized, nearly as long as valva, its distal 1/3 with dense spines, bent downward, ending in point; asymmetrical: left sacculus apically with two short processes, dorsal process smaller, somewhat phylliform, sparsely haired, ventral process larger, with dense spines near ventral margin, apex acute; right sacculus with a small dorsal process pointed at apex, ventral process short and rounded. Saccus relatively small and weakly sclerotized. Juxta large, somewhat U-shaped; posterior margin deeply concave at middle, anterior margin a little protruded at middle. Aedeagus stout, narrow in basal 1/4, gradually widened near to apex; apex roundly concave and forming a large rounded process distally.

Female: Unknown.

Distribution: China (Guizhou).

Etymology: This specific name is derived from the Latin abnormis (abnormal), to note the asymmetry of sacculus.

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Acknowledgements – The authors are grateful to Dr. T. SAITO (Entomological Laboratory, College of Agriculture, University of Osaka Prefecture, Japan) and Professor Y. Q. LIU (Institute of Zoology, Chinese Academy of Sciences, China) for their kind assistance by sending the material used in this study. We also feel grateful to the anonymous reviewer who kindly gave us valuable advice for the improvement of the manuscript. The project was supported by the National Natural Science Foundation of China (No. 30470211).

Figures

Figs 1–4. Adults of Irepacma spp. 1= I.curva sp.n. (holotype, male); 2 = I. bifida sp.n. (paratype, female); 3 = I. lanceolata sp. n. (holotype, male); 4 = I. abnormis sp. n. (holotype, male)

Figs 5–8. Male genitalia of Irepacma spp.: 5 = I. curva sp. n. (holotype, slide no. W01299); 6 = I. bifida sp.n. (holotype, slide no.W01252); 7 = I. lanceolata sp.n. (holotype, slide no.W03029); 8 =I.