Gnathocinara boi Wang, X. & Zolotuhin

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 : 49-50

29. Gnathocinara boi Wang, X. & Zolotuhin , sp. nov. ( FIGURES 18 C, 18F)

Type locality: T ongzhong Forest Farm, Shangsi County, Shiwandashan National NR, Fangchenggang City, Guangxi Zhuang Autonomous Region, China.

Diagnosis. This species can be distinguished easily from G. situla based on the following characters: wings pale gray with dark gray bands; dorsum of abdomen gray without black patches; apex of the abdomen covered with gray hairs; uncus bifid; gnathos slim; saccus swollen apically.

Description. Male: wingspan 32–38 mm; forewing length 16–18 mm;, body length 12–15 mm.

Head. Vertex densely covered with white scales; compound eyes large and elliptical dense black scales around them; labial palpus yellow, elongated downwards; antenna bipectinate, about 1/3 length of forewing, dark brown dorsally, basal 1/4 white.

Thorax. Dorsum yellowish-brown, covered with dense yellow scales. Fore- and hindwings grayish-white, covered with dense white scales; antemedial line broad and gray, from CuA2 to inner margin; discal cell with a reniform stigma and a small gray dot; postmedial line broad and curved from M1 curved to inner margin, represented by black scaling on the veins from M1 to the costa; terminal line broader and gray, along the outer margin. Postmedial and terminal lines of hindwing not incomplete, unclear; discal cell with a gray spot; inner margin with 3 black spots. Postmedial and terminal lines on forewing underside broad and gray; discal cell with a small dot. Fore- and midlegs black, hindleg orange; tibia covered in brown scales.

Abdomen. Dorsum gray, without black patches, apex covered with gray long scales.

Male genitalia. Uncus bifurcate, each branch with a dorsal, sharply pointed process; valvae fused basally, deeply bifid to near the base, costa long and sickle-shaped; sacculus apically blunt, with sparse long scales, clearly thinner than costa; saccus well-developed, swollen distally, about 2/5 length of the whole male genitalia; aedeagus slender and long, smooth, the middle thinner than either end; coecum penis with a bifurcate apical process. Tergite VIII goblet-shaped, anterior margin with two long, very thin, laterally directed bars. Sternite VIII broad, posterior margin medially invaginated, V-shaped, apically with two pairs of processes, the outer broad and apically blunt, the inner longer, curved and sharply pointed; anterior margin with two long processes, apically curved outward and expanded.

Female. Unknown.

Specimens examined. Holotype, male, Dongzhong Forest Farm, Shangsi County, Shiwandashan National NR, Fangchenggang City, Guangxi Zhuang Autonomous Region, China, 8.IV.2002, light trapping, Min Wang & Guo- Hua Huang leg. (HUNAU). Paratypes: 1 male, same data as holotype (HUNAU); 3 males, Milv Village, Shiwandashan National NR, Fangchenggang City, Guangxi Zhuang Autonomous Region, China, 6.IV.2002, light trapping, Min Wang & Guo-Hua Huang leg. (SCAU); 5 males, Renzhuang Village, Jingxi County, Guangxi Zhuang Autonomous Region, China, 10–15.VII.2006, Wei Xiong & Liu-Sheng Chen leg. (SCAU); 1 male, Daoyin Village, Yinggeling National NR, Hainan Province, China, 4.XII.2005, Min Wang & Wei Xiong leg. (KUM); 1 male, Jianfengling National NR, Ledong County, Hainan Province, China, 23.X.2007, Min Wang leg. (HUNAU).

Bionomics. The larval host is unknown. Adults fly from late spring to winter.

Etymology. The species is named in honor of Dr. L.-Y. Bo, who was the supervisor of the senior author during her postdoctoral fellowship.

Distribution. Mainland China (Guangxi) and Hainan.

Remarks. The new species appears to be endemic to South China.

Figures

FIGURE 18. Adults and male genitalia of Gnathocinara spp. A. G. situla, male (Thailand); B. G. situla, female (Myanmar); C. G. b o i sp. nov., male (Guangxi), holotype; D. G. situla, male genitalia (Yunnan); E. G. situla, male genitalia (Yunnan); F. G. b o i sp. nov., male genitalia (Guangxi), holotype.