Thecobathra latibasis, Fan, Ximei, Jin, Qing & Li, Houhun, 2008

Fan, Ximei, Jin, Qing & Li, Houhun, 2008, Seven new species and a checklist of the genus Thecobathra Meyrick from China (Lepidoptera: Yponomeutidae), Zootaxa 1821, pp. 13-24 : 18-19

Thecobathra latibasis sp. nov.

( Figs. 4 , 11 )

Type material. Holotype: ɗ, CHINA: Jinxiu County [24°08'N, 110°11'E], Guangxi, 550 m, 13.iv.2002, coll. Shulian Hao and Huaijun Xue, genitalia slide no. FXM06049.

Diagnosis. The new species can be separated from other congeners by the small, short socius, and by the valva, which has a broadly expanded base and an extremely long and curved, spine-shaped inner process basally.

Description. Adult ( Fig. 4 ): Wing expanse 14.0 mm. Head white, with appressed scales on frons and long rough scales between antennae. Antenna with scape white, flagellum pale brownish yellow. Labial palpus white, third segment yellowish distally. Thorax and tegula snow white. Forewing white sparsely tinged with brown, with a brown spot at below distal 1/3 of fold; costal margin with basal 1/4 black, distal 1/4 dark brown; cilia white but grey distally. Hindwing and cilia white, pale yellowish brown distally. Legs white except tarsi black at apex; hind tibia with a dark yellowish brown dot at end of each side.

Male genitalia ( Fig. 11 ): Socius small and short, finger shaped, with a sclerotized tooth-like process apically. Tuba analis membranous, basal half widened. Ventral plate of gnathos large trapezoidal, edge sclerotized, with a triangular process at middle apically. Valva large, uprising; basal 2/5 extremely broadened by roundly expanding ventrally; distal 3/5 narrow, nearly parallel sided laterally, rounded at apex; costa weakly sclerotized in basal half, curved at middle; a sclerotized, long and curved, spine-shaped inner process arising from base. Sacculus narrow, indistinct, somewhat arched ventrally. Saccus Y-shaped, curved distally, rounded at apex. Phallus short, slightly longer than saccus, strong and curved, with a small triangular tooth at 2/5, distal 3/5 dentate on one side.

Female: Unknown.

Distribution. China (Guangxi).

Etymology. The specific name is derived from the Latin latibasis , referring to the basally broadened valva.

Figures

FIGURES 1 – 7. Adults of Thecobathra spp. 1, T. basilobata sp. nov.; 2, T. partinuda sp. nov.; 3, T. longisaccata sp. nov.; 4, T. latibasis sp. nov.; 5, T. acrivalvata sp. nov.; 6, T. paranas sp. nov.; 7, T. badagongshana sp. nov.

FIGURES 8 – 11. Male genitalia of Thecobathra spp. 8, T. basilobata sp. nov. (holotype, slide no. FXM 06123); 9, T. partinuda sp. nov. (holotype, slide no. FXM 06124); 10, T. longisaccata sp. nov. (holotype, slide No. FXM 06051); 11, T. latibasis sp. nov. (holotype, slide no. FXM 06049).