Triuncina Dierl, 1978

Wang, Xing, Wang, Min, Zolotuhin, Vadim V., Hirowatari, Toshiya, Wu, Shipher & Huang, Guo-Hua, 2015, The fauna of the family Bombycidae sensu lato (Insecta, Lepidoptera, Bombycoidea) from Mainland China, Taiwan and Hainan Islands, Zootaxa 3989 (1), pp. 1-138 : 25-26

V Triuncina Dierl, 1978 ( FIGURES 9–10 )

Triuncina Dierl, 1978 , Spixiana 1 (3): 246. Type species: Trilocha brunnea Wileman, 1911 , by monotypy.

Diagnosis. Characterized by the following features: wings reddish brown; forewing apex blunt, outer margin straight; hindwing inner margin with a complex pattern; uncus small and stick-like; socii strongly modified into flattened pyramidal or ovoid processes laterally on the tegumen; valvae short hooked; saccus well-developed; aedeagus slender and long.

Distribution. Oriental Region.

Remarks. The species have very local distributions and genital dissection is strongly recommended to confirm identifications due to strong external similiarity. Five species are here recorded from China (Map 5), of which two are described as new.

Map 5. Distribution of Triuncina spp. mainly in China

Figures

FIGURE 9. Adult males and labels of Triuncina spp. A – B. T. brunnea (Taiwan), type; C – D. T. brunnea (Taiwan), type; E – F. T. diaphragma (Taiwan), type; G. T. diaphragma (Guangxi); H. T. nitida (Myanmar).

FIGURE 10. Adult males and male genitalia of Triuncina spp. A. T. xiongi sp. nov., male (Hainan), holotype; B. T. daii sp. nov., male (Guangdong), holotype; C. T. brunnea, male genitalia (Taiwan); D. T. xiongi sp. nov., male genitalia (Hainan), holotype; E. T. daii sp. nov., male genitalia (Guangdong), holotype; F. T. diaphragma, male genitalia (Guangxi); G. T. nitida, male genitalia (Myanmar).