Trichoboscis crocosema Meyrick 1929

Trichoboscis crocosema (Meyrick, 1929)

(Figs. 5, 14, 20)

Lecithocera crocosema Meyrick, 1929: 524; Clarke, 1965: 123. TL: S. Andamans, S. India. Type in BMNH.

Trichoboscis crocosema (Meyrick): Gozmány, 1972: 295; Wu, 1997: 199.

Diagnosis. Adult (Fig. 5) with wingspan 13.0–14.0 mm. Trichoboscis crocosema differs from the type species T. pansarista by the phallus with more than 10 distinct strong spines in the male genitalia, and by the corpus bursae having two small plates of clustered short cone-shaped spines in the female genitalia.

Descriptions of male and female genitalia. Male genitalia (Fig. 14): Uncus reduced; basal lobes nearly square, slightly concave on caudal margin. Gnathos distally narrowed to acute apex. Tegumen broad, hooked anteriorly. Valva wide at base, narrowed to pointed apex; costal bridge gently arched; costa slightly concave at about basal 1/3; ventral margin bluntly arched, more or less sinuate; sacculus broad, terminated beyond middle of ventral margin. Juxta oval, convex laterally, roundly protruded anteriorly; caudal lobes wide basally, narrowed to about middle, then curved and extending horizontally outward to pointed apex. Vinculum broadly U-shaped, rounded anteriorly. Phallus (Fig. 14 a) stout, shorter than valva; cornuti consisting of more than 10 strong spines directed anteriorly.

Female genitalia (Fig. 20): Abdominal sternite VIII emarginate at middle on caudal margin. Apophyses anteriores about 1/2 length of apophyses posteriores. Antrum indistinct. Ductus bursae short, about 1/4 length of corpus bursae. Corpus bursae irregularly elongate, having two small plates of clustered very short cone-shaped spines; signum small, rounded, placed anteriorly, with short cone-shaped spines.

Material examined. CHINA: Guangdong: 1♂, Yangmei, Gaoming, 20.iv.2006, coll. Dandan Zhang; Hainan: 1♂, Duowenling, 120 m, 3.v.2009, coll. Bingbing Hu and Qing Jin; 1♂, Datian Nature Reserve, 25 m, 30.xi.2009, coll. Zhaohui Du and Linlin Yang; 1♂, 1♀, Yinggeling, 30.ix.2010, coll. Bingbing Hu; 1♂, Yinggeling, 620 m, 3.vi.2010, coll. Bingbing Hu and Jing Zhang; 1♂, Yinggeling, 20.xii.2012, coll. Zhibo Wang; 1♂, Nanxicun, Diaoluoshan, Lingshui, 75 m, 21.iv.2013, Yinghui Sun, Wei Guan and Tengteng Liu; 11♂, Pailiaocun, Qixianling, Baoting, 130 m, 24–26.iv.2013, coll. Yinghui Sun, Wei Guan and Tengteng Liu; 21♂, 2♀, Jianfengzhen, Ledong, 40 m, 27.iv–2.v.2013, coll. Yinghui Sun, Wei Guan and Tengteng Liu; 6♂, Yajia, Bawangling, Changjiang, 245 m, 7–8.v.2013, coll. Yinghui Sun, Wei Guan and Tengteng Liu.

Distribution. China (Guangdong, Hainan), India (South).