Eudonia cavata, Li, Weichun, Li, Houhun & Nuss, Matthias, 2012

Li, Weichun, Li, Houhun & Nuss, Matthias, 2012, Taxonomic revision of the genus Eudonia Billberg, 1820 from China (Lepidoptera: Crambidae: Scopariinae), Zootaxa 3273, pp. 1-27 : 23-24

21. Eudonia cavata sp. n.

( Figs. 13 , 23 , 34 )

Type material. Holotype: 3, China: Shangsi, Xiaowutai (39°57ʹN, 115°02ʹE), Weixian, Hebei Province, 1200 m, 25.vii.2000, leg. Yanli Du and Zhendong Li (genitalia slide No. LWC05025). Paratypes: 1 Ƥ, same data as holotype (genitalia slide No. LWC08073); 3 3, Jinhekou, Xiaowutai, Weixian, Hebei Province, 1200 m, 22–23.vii.2000, leg. Yanli Du and Zhendong Li (genitalia slide Nos. LWC05011, LWC05019, LWC05028); 1 3, Baotianman, Neixiang (34°02ʹN, 111°05ʹE), Henan Province, 1350 m, 13.vii.1998, leg. Houhun Li (genitalia slide No. LWC06293); 1 3, 1 Ƥ, Chengjiashan, Daozhen (28°53ʹN, 107°36ʹE), Guizhou Province, 1300 m, 19.viii.2004, leg. Yunli Xiao (genitalia slide Nos. LWC05046, LWC05047).

Diagnosis. This species is smilar to E. puellaris Sasaki, 1991 in appearance and male genitalia, but can be disparted by the uncus with an ovate hatch posteriorly in the male genitalia and the ductus bursae looped four times in the female genitalia. In E. puellaris , the posterior margin of the uncus is convex and the ductus bursae has five loops.

Description. Adult ( Fig. 13 ): Forewing length 6.5–7.0 mm. Frons pale brown. Vertex white mixed with pale brown. Labial palpus with first segment blackish brown, white ventrally at base; second and third segments pale brown. Maxillary palpus blackish brown, white basally and distally. Antenna with scapus pale brown; flagellomeres pale brown and greyish white on dorsal surface, pale brown on ventral surface. Patagium pale brown to blackish brown. Thorax pale brown. Tegula pale brown to blackish brown, posterior margin with long, pale browntipped white scales. Forewing covered with sparse blackish brown scales; antemedian line white, outcurved medially; antemedian stigmata blackish brown, stripelike, connected with antemedian line; distal discoidal stigma blackish brown, X-shaped, connected with blackish brown spot at costa; postmedian line white, sinuate, meeting costa perpendicularly, bending towards distal discoidal stigma in small dentation, incurved slightly at posterior one third, meeting dorsum by acute angle; subterminal line white, incurved medially, roughly forming a K-pattern together with postmedian line; fringe yellowish white, subbasal line pale brown. Hindwing white, sparsely suffused with pale brown scales; fringe concolorous with forewing except lighter subbasal line. Abdomen pale brown.

Male genitalia ( Fig. 23 ): Uncus broad and short, laterally convex slightly, poteriorly with ovate hatch. Gnathos triangular, broad basally, tapering to pointed apex, covered with granules distally. Valva with basal two thirds nealy parallel-sided dorsoventrally, distal one third gently narrowed towards rounded apex. Juxta ovate basally, narrowly elongate distally, apex blunt. Phallus curved strongly at one fourth, about twice as long as valva.

Female genitalia ( Fig. 34 ): Papilla anale ovate; about one third length of apophysis posterior. Tergite eight about half as long as apophysis anterior. Antrum with posterior three fourths about three times as wide as colliculum, covered with dense tiny spines; anterior one fourth as wide as colliculum, covered with dense granules. Colliculum about one fifth length of ductus bursae. Ductus bursae with four loops anteriorly. Corpus bursae rounded, covered with dense tiny spines; signum ovate, placed at middle of corpus bursae; appendix bursae ovate, arising from lateromedian portion of corpus bursae.

Distribution. China (Hebei, Henan, Guizhou).

Etymology. The specific name is derived from the Latin cavatus = cavelike, in reference to the apex of uncus with an ovate hatch in the male genitalia.

Figures

FIGURES 10 – 13. Adults of Eudonia spp. 10. E. tibetalis (Caradja): a. lectotype, b. labels, male; 11. E. altissima Leraut: a. holotype, b. labels, female; 12. E. duospinata sp. n., holotype, male; 13. E. cavata sp. n., holotype, male.

FIGURES 20 – 24. Male genitalia of Eudonia spp. 20. E. hexamera sp. n., holotype, genitalia slide No. LWC 08224; 21. E. magna sp. n., holotype, genitalia slide No. LWC 07476; 22, E. duospinata sp. n., holotype, genitalia slide No. LWC 06212; 23. E. cavata sp. n., holotype, genitalia slide No. LWC 05025; 24. E. tibetalis (Caradja), genitalia slide No. LWC 08110 (scales: 0.5 mm).

FIGURES 31 – 34. Female genitalia of Eudonia spp. 31. E. hexamera sp. n., paratype, genitalia slide No. LWC 06257; 32. E. magna sp. n., paratype, genitalia slide No. LWC 08010; 33. E. duospinata sp. n., paratype, genitalia slide No. LWC 07505; 34. E. cavata sp. n., paratype, genitalia slide No. LWC 08073 (scales: 0.5 mm).