Scoparia bifaria, Li, Weichun, Li, Houhun & Nuss, Matthias, 2010

Li, Weichun, Li, Houhun & Nuss, Matthias, 2010, Taxonomic revision of Scoparia Haworth, 1811 (Lepidoptera: Crambidae: Scopariinae) from China, Zootaxa 2609, pp. 1-33 : 23-24

17. Scoparia bifaria sp. n.

( Figs. 11, 20 , 29 )

Type material. China: Holotype: 3, Pinghe, Xishui (28.19°N, 106.12°E), Guizhou Province, 1200 m, 1.vi.2000, leg. Yanli Du (genitalia slide no. LWC08091). Paratypes: Guizhou Province: 13 3, 5 ƤƤ, Dashahe, Daozhen (28.53°N, 107.36°E), 1350–1450 m, 22-25.v.2004, leg. Shulian Hao (genitalia slide nos. LWC05051, LWC05056, LWC05064, LWC06009, LWC06017, LWC06025); 2 ƤƤ, Dashahe, Daozhen, 1350 m, 26.viii.2004, leg. Yunli Xiao (genitalia slide no. RYD04287); 1 Ƥ, Guocun, Daozhen, 1300 m, 20.viii.2004, leg. Yunli Xiao; 1 Ƥ, Linjiang, Xishui, 550 m, 26.ix.2000, leg. Yunli Xiao (genitalia slide no. LWC06264); 1 Ƥ, Lianhuaping, Leigongshan (26.28°N, 108.17°E), 1600 m, 17.ix.2005, leg. Jialiang Zhang (genitalia slide no. LWC06231); 1 Ƥ, Lijiaba, Mayanghe (28.33°N, 108.30°E), 700 m, 29.ix.2007, leg. Hui Zhen; 10 ƤƤ, Houhe, Wufeng (30.12°N, 116.40°E), Hubei Province, 1000–1100 m, 10-12.vii.1999, leg. Houhun Li et al. (genitalia slide nos. LWC08160, RYD04313); 1 3, Yanggashan, Wenxian (32.58°N, 104.41°E), Gansu Province, 1950 m, 4.vii.2001, leg. Houhun Li and Xinpu Wang, NKUM.

Diagnosis. This species is similar to S. basistrigalis by having two rows of spinelike cornuti in the male genitalia, but is different in the uncus rounded apically in the male genitalia; the funnel-shaped antrum, the straight colliculum, and the straight ductus bursae in the female genitalia. In S. basistrigalis , the uncus is pointed apically; the antrum is tubular, the colliculum is strongly constricted at middle, and the posterior part of the ductus bursae is curved.

Description. Adult ( Fig. 11). Forewing length 8.0–10.0 mm. Frons pale brown mixed with white. Vertex white. Labial palpus pale brown mixed with white; first segment white ventrally at base. Maxillary palpus pale brown, white subbasally and distally. Antenna with scapus pale brown dorsally, white ventrally; flagellomeres with dorsal surface pale brown and white alternately, ventral surface pale brown. Patagium pale brown mixed with yellowish white. Thorax white mixed with pale brown. Tegula covered by pale browntipped to blackish brown-tipped white scales, posterior margin with long white scales. Forewing covered with sparse pale brown scales, costa blackish brown between antemedian and postmedian lines; antemedian line white, straight, oblique outwards conspicuously; antemedian stigmata blackish brown, stripelike, connected with antemedian line; distal discoidal stigma blackish brown, X-shaped, anterior two branches unconspicuous, separated from blackish brown spot at costa; postmedian line white, meeting costa perpendicularly, dentate towards distal discoidal stigma, posterior two thirds parallel with termen, meeting dorsum by oblique angle; subterminal line white, straight, parallel with termen, separated from postmedian line; fringe white, with pale brown subbasal line. Hindwing greyish white; fringe concolorous with forewing. Legs white, foreleg covered with dense blackish brown scales on outer side, mid- and hindlegs sparsely suffused with blackish brown scales on outer side; tarsi blackish brown and white alternately on outer side. Abdomen grey.

Male genitalia ( Fig. 20 ). Uncus ovate, narrow posteriorly. Gnathos slender, slightly longer than uncus, pointed and hooked apically. Valva distally narrow slightly; costa straight; apex rounded. Sacculus slightly concave ventrodistally; free distal process at about three fourths of valva. Saccus small, bluntly rounded anteriorly. Juxta ovate, notched posteriorly. Phallus curved slightly, nearly as long as valva, with two rows of small spinelike cornuti; opening for ductus ejaculatorius at about basal third of phallus.

Female genitalia ( Fig. 29 ). Papilla anale ovate, about half length of apophysis posterior. Tergite eight about half as long as apophysis anterior. Ostium bursae about twice as thick as anterior part of antrum, surrounded by piece of spinulate membrane. Antrum funnel-shaped, with dense tiny spines, nearly as long as colliculum. Ductus bursae straight, wrinkled before colliculum, then thickened towards corpus bursae. Corpus bursae rounded, about two thirds longitudinal area with dense tiny spines, remaining area with dense granules; signum stripelike, placed in granular area; appendix bursae ovate.

Distribution. China (Gansu, Guizhou, Hubei).

Etymology. The specific name is derived from the Latin bifarius = two rows of, in reference to the two rows of cornuti in the male genitalia.

Figures

FIGURES 19 – 20. Male genitalia of Scoparia spp. (a, male genitalia capsule; b, phallus; c, cornuti): 19, S. brevituba sp. n., holotype, genitalia slide no. LWC 07497; 20, S. bifaria sp. n., holotype, genitalia slide no. LWC 08091.

FIGURES 29 – 30. Female genitalia of Scoparia spp.: 29, S. bifaria sp. n., paratype, genitalia slide no. LWC 08160; 30, S. largispinea sp. n., paratype, genitalia slide no. LWC 06286.