Euryobeidia languidata ( Walker, 1862 )

Han, Hongxiang, 2017, A review of Euryobeidia Fletcher, 1979 (Lepidoptera, Geometridae, Ennominae), with description of three new species, Zootaxa 4317 (2), pp. 370-378 : 371

Euryobeidia languidata ( Walker, 1862)

Figs 1–3 , 15, 20, 25 , 30

Abraxas languidata Walker, 1862 , List Specimens lepid. Insects Colln Br. Mus., 24: 1122. Holotype, Nepal. (BMNH) Euryobeidia languidata: Fletcher, 1979 , The Generic Names of Moths of the World, 3: 84.

Diagnosis. Forewing length: male 20–23 mm; female 21–23 mm. On the wing pattern, E. languidata shares the following characters with E. ellipsoidea and E. incrassata , such as the white wings are decorated with many dark grey spots or patches, the dark grey and the yellow terminal bands are present on the forewing and hindwing respectively. However, E. languidata can be distinguished by the following characters: the body size of E. languidata is larger than E. ellipsoidea , but a little smaller than E. incrassata ; the spots on the wings of E. languidata are larger than those of allied species. In the male genitalia, the costa is simple in E. languidata , whereas it has apparent incrassation at middle in other two species; the dorsal process of the uncus is smaller than that of E. ellipsoidea , but more developed than in E. incrassata . In the female genitalia, the triangular sclerite between the bases of apophyses posteriores is larger than in E. ellipsoidea ; the posterior margin of the lamella antevaginalis is more serrated than in E. ellipsoidea ; the spines in the corpus bursae are denser than in E. ellipsoidea .

Material examined. CHINA: Jiangxi ( IZCAS): 1♀, Dayu, 17.VII.1977 . Fujian ( IZCAS): 2♀, Wuyishan, Dazhulan, 1150 m, 28.VII.2006, coll. Xie Juan & Xue Dayong ; 1♂, Wuyishan, Sangang, 700 m, 25–26.VII.2006, coll. Xue Dayong. Guangxi ( IZCAS): 5♂, Fangcheng, Fulong, 500 m, 24.V.1999, coll. Zhang Yanzhou .

Distribution. China (Jiangxi, Fujian, Taiwan, Guangxi), Korea, Japan, India, Nepal.

Remarks. The subspecies E. languidata yakushimensis was described by Inoue (1976) from the island of Yakushima in Japan. The subspecies can be easily distinguished from the nominate subspecies by following characters: the basal, median and terminal areas of forewing are tinged with broad dark grey bands, and the basal band sometimes connects with the median one; on the hindwing, the basal and subterminal areas are also tinged with broad dark grey band.

Figures

FIGURES 1 – 14. Adults. 1 – 2. Euryobeidia languidata. 1, male (Fujian); 2, female (Fujian); 3. E. languidata yakushimensis, male (holotype, Yakushima, BMNH); 4 – 5. E. ellipsoidea sp. nov. 4, male (holotype, Sichuan); 5, female (Sichuan); 6. E. incrassata sp. nov. male (holotype, Hainan); 7 – 10 E. largeteaui. 7, male (Zhejiang); 8, ditto, underside; 9, female (Zhejiang); 10, ditto, underside; 11 – 14. E. quadrata sp. nov. 11, male (holotype, Zhejiang); 12, ditto, underside; 13, female (Zhejiang); 14, ditto, underside; Scale bar = 1 cm.

FIGURES 15 – 29. Male genitalia. 15, Euryobeidia languidata (Fujian); 16, E. ellipsoidea sp. nov. (paratype, Sichuan); 17, E. incrassata sp. nov. (paratype, Hainan); 18, E. largeteaui (Guangxi); 19, E. quadrata sp. nov. (paratype, Zhejiang); 20 – 24. Aedeagus. 20, E. languidata; 21, E. ellipsoidea sp. nov. (paratype); 22, E. incrassata sp. nov. (paratype); 23, E. largeteaui; 24, E. quadrata sp. nov. (paratype); 25 – 29. Lateral view of uncus. 25, E. languidata; 26, E. ellipsoidea sp. nov. (paratype); 27, E. incrassata sp. nov. (paratype); 28, E. largeteaui; 29, E. quadrata sp. nov. (paratype). Scale bars = 1 mm.

FIGURES 30 – 33. Female genitalia. 30, Euryobeidia languidata (Fujian); 31, E. ellipsoidea sp. nov. (paratype, Sichuan); 32, E. largeteaui (Hunan); 33, E. quadrata sp. nov. (paratype, Zhejiang). Scale bars = 1 mm.