Bagdadia tricornis, Yang, Meiqing & Li, Houhun, 2015

Yang, Meiqing & Li, Houhun, 2015, A taxonomic study of the genus Bagdadia Amsel, 1949 from Hainan Island of China (Lepidoptera: Gelechiidae), Zootaxa 3972 (4), pp. 589-594 : 593

Bagdadia tricornis sp. nov.

( Figs. 2, 4, 5 )

Type material. Holotype ♂, CHINA, Hainan Province: Jianfeng Town, Ledong County, 40 m, 27.iv.2013, leg. Yinghui Sun, Wei Guan and Tengteng Liu, genitalia slide no. YMQ13070.

Paratypes: Hainan Province: 1 ♀, with same label as holotype; 2 ♂, Datian Nature Reserves, 100 m, 27.iv.2009, leg. Qing Jin and Bingbing Hu; 3 ♀, Yajia, Mt. Bawang, Changjiang County, 245 m, 7.v.2013, leg. Yinghui Sun, Wei Guan and Tengteng Liu; 2 ♀, Yajia, Mt. Bawang, Changjiang County, 245 m, 8.v.2013, leg. Yinghui Sun, Wei Guan and Tengteng Liu; 1 ♀, Hongxincun, Yuanmen Town, Baisha County, 430 m, 15.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu.

Adult ( Fig. 1 ). Wingspan 8.0−10.0 mm. Head grayish brown, with some grayish white scales. Labial palpus with second segment brown on outer surface, grayish white distally, speckled with black scales, inner surface grayish white, ventral surface with triangular scale tuft; third segment slightly longer than second, grayish white, with brown strips at base, 2/5 and 2/3, apex brown. Antenna alternately gray and brown. Thorax and tegula grayish brown, mixed with grayish white scales. Forewing long and narrow, with costal margin slightly convex at middle; ground colour yellowish brown, sprinkled with black and grayish white scales, three small scale tufts near base, black on inside, outside yellowish brown, around them grayish white mixed with black scales; costal margin with scale tuft at 1/4, 1/2 and 2/3 respectively: first one largest, black on inside, outside yellowish brown, second and third yellowish brown, third one smallest; black dash oblique to outside near base of second scale tuft, triangular blotch near apex of it; wide black band at 1/3 extending from posterior margin to costal margin, large irregular black blotch at 2/3 near posterior margin; cilia dark gray. Hindwing and cilia gray. Legs grayish white, densely with brown and black scales on outer surface, hind tibia covered with grayish yellow hairs dorsally.

Male genitalia ( Fig. 4 ). Uncus corona-shaped, posterior margin convex at middle, laterally with three strong and some short spines. Gnathos slender, bent at middle, hooked, slightly expanded near apex, pointed distally. Tegumen wide, anterior margin deeply concaved. Valva long and narrow, dorsal margin with triangular process at basal 3/5, rounded at apex. Valvella digitate, 1/2 length of valva, bluntly pointed at apex. Vinculum with two small processes on posterior margin, apex rounded. Saccus wide at base, distal half slender. Aedeagus inflated in basal 1/ 3, then narrowed, apex blunt.

Female genitalia ( Fig. 5 ). Papillae anales oblong, with long setae. Anterior apophyses about 1/2 length of posterior apophyses. Eighth tergum with posterior margin deeply concave at middle, convex laterally, eighth sternum with strongly sclerotized plate, U-shaped at middle, laterally with triangular process, hooked distally. Ostium placed on posterior margin of eighth sternum. Antrum funnel-shaped. Ductus bursae slender, longer than corpus bursae. Ductus seminalis arising from near junction of ductus bursae and corpus bursae. Corpus bursae ovate; signum crescentic, with one side serrate.

Diagnosis. This species closely resembles Bagdadia longanae (Yang & Chen) in male genitalia, but can be separated from the latter by following characters: Forewing with a large irregular black blotch at 2/3 near posterior margin, eighth sternum with a strongly sclerotized plate in female genitalia.

Host plant. Unknown.

Distribution. China (Hainan).

Etymology. The specific name is derived from Latin tricornis , meaning triangular, referring to the process of valva.

Figures

FIGURES 1 − 5. Adults and genitalia of Bagdadia spp. 1 − 2, Adults: 1, B. species, ♂; 2, B. tricornis sp. nov., holotype, ♂; 3, male genitalia of B. species, slide no. YMQ 13097. 4 − 5, genitalia of B. tricornis sp. nov.: 4, male, paratype, slide no. YMQ 13098; 5, female, paratype, slide no. YMQ 13110. (scales: 1 − 2 = 2.0 mm; 3 − 5 = 0.2 mm).