Stathmopoda digitiprocessa, Wang & Guan & Wang, 2020

Wang, Ailing, Guan, Wei & Wang, Shuxia, 2020, Genus Stathmopoda Herrich-Schäffer, 1853 (Lepidoptera: Stathmopodidae) from China: Descriptions of thirteen new species, Zootaxa 4838 (3), pp. 358-380 : 364-365

Stathmopoda digitiprocessa sp. nov.

( Fig. 6 , 19 , 32 )

Type material. CHINA, Guangxi: Holotype ♂, qinmu Village , Yongfu County, 160 m, 3.V.2008, leg. H Zhen & L Zhang, slide No. GW 12175 . Paratypes. Guangxi: 2♂ 4♀, same data as holotype, 1–6.V.2008, leg. H Zhen & L Zhang, slide Nos. GW 12176, GW12177; 1♀, Dongzhong Farm, Fangchenggang , 370 m, 9.IV.2002, leg. SL Hao & HJ Xue; 5♀, Shaoping Farm, Pingxiang, 280 m, 19.III–27.IV.2012, leg. XF Yang, slide Nos. GW 12225, GW15171 ; Jiangxi: 1♀, Xiagongtang, Mt. Jiulian, Longnan , 630 m, 29.VIII.2007, leg. DD Zhang, slide No. GW 15150 .

Diagnosis. The new species is similar to S. sericicola Terada, 2014 in the forewing pattern. It can be distinguished in the male genitalia by the costa of the valva with a digitate process, the cucullus convex beyond dorsal 1/3, the semi-rounded juxta, and the cornutus consisting of six differently sized spines or denticles; in the female genitalia by the ductus bursae approximately 1.3 times length of the corpus bursae. In S. sericicola , the costa of the valva lacks a digitate process, the cucullus is convex near base, the juxta is sub-rectangular, and the cornutus consists of four spines in the male genitalia; and the ductus bursae is approximately same length as the corpus bursae in the female genitalia ( Terada 2014, P. 114, Figs 38 , 40, 42).

Description. Adult ( Fig. 6 ). Wingspan 18.5–19.5 mm. Head with frons and vertex ochreous white, occiput tinged with blackish brown. Labial palpus greyish white on inner side; second segment greyish white on outer side, with pale ochreous brown line basally; third segment pale ochreous yellow in basal half and dark brown in distal half on outer side. Antenna greyish brown. Thorax and tegula yellowish white, with blackish brown scales. Forewing yellowish white, with scattered brown scales between fold and ventral margin basally; dark brown streak along costal margin from base to apex; dark brown stripe from basal 1/10 of anterior margin of cell extending outward to basal 1/3 of costal margin; cell with an elliptical blackish brown spot at basal 2/5, an irregular blackish brown spot on outer margin not reaching ventral margin, a longitudinal blackish brown streak along middle linked preceding two spots, thereafter extending straightly to distal 1/4; short blackish brown stripe near apex, joined with costal streak; blackish brown streak along fold; fringe pale brown, blackish brown around apex. Hindwing and fringe greyish brown. Legs pale ochreous yellow dorsally, greyish white ventrally: fore femur and tibia blackish brown on outer side, tarsus blackish brown at apex of each tarsomere; mid tibia blackish brown in basal 1/3 dorsally, with white bristles at basal 1/3 and apex, tarsus blackish brown in distal half of each tarsomere on dorsal surface; hind tibia with long white bristles at basal 1/3, 2/3 and at apex on dorsal surface respectively, spurs blackish brown dorsally, greyish white ventrally, tarsus blackish brown at apex of each tarsomere, with ochreous brown bristles at apices of basal three tarsomeres. Abdomen dark brown on dorsal surface, pale ochreous brown on ventral surface.

Male genitalia ( Fig. 19 ). Uncus wide at base, narrowed toward apex, with long setae laterally. Gnathos wide at base, narrowed to apex. Tegumen with height approximately 1.3 times length of uncus, bifurcate anteriorly. Valva uniformly narrow to before cucullus; cucullus oval, length approximately 1.6 times of maximum width, strongly convex beyond dorsal 1/3, obtuse on ventral margin, rounded at apex; inner process spine-shaped, sinuate; costa convex roundly; strong digitate process arising from beyond end of costa; sacculus broadly banded, approximately 1/3 length of valva, apex blunt, not free from cucullus. Vinculum narrowly banded; saccus approximately 1/4 length of uncus. Juxta semi-rounded, straight on posterior margin, broadly rounded on anterior margin; anellar lobes elliptical, approximately 1.5 times length of juxta, with short setae. Aedeagus tapered from base to apex, approximately 2/3 length of valva, with a sclerotized plate near base and numerous microspines at basal 1/3 medially, distal 1/4 produced to a thin club ventrally; cornutus consisting of six differently sized spines or denticles, located at basal 1/3.

Female genitalia ( Fig. 32 ). Intersegmental membrane between papillae anales and eighth abdominal segment approximately 2.3 times length of papillae anales.Apophyses posteriores approximately 1.5 times length of apophyses anteriores. Eighth segment straight on posterior margin, with long setae; eighth tergite with anterior margin concave in V shape medially; eighth stenite triangularly produced anteriorly. Antrum sub-rectangular, sclerotized anteriorly, with a triangular process anteromedially. Ductus bursae approximately 1.3 times length of corpus bursae, basal 2/3 almost uniform, distal 1/3 gradually widened. Corpus bursae oval; with two signa, each with a sclerotized ridge medially, posterior signum approximately twice length of anterior signum, approximately 2/5 width of corpus bursae, with small short fine spines posteriorly ( Fig. 32a ); two rows of large denticles at transition between ductus bursae and corpus bursae. Ductus seminalis arising from posterior part of corpus bursae, approximately 2.5 times length of corpus bursae, tubular, elliptically inflated at basal 1/3, with dense small granules at apex.

Distribution. China (Guangxi, Jiangxi).

Etymology. The specific epithet is derived from the Latin digit- and processus, referring to the digitate process beyond the costa in the male genitalia.

Figures

FIGURES 3−8. Adults of Stathmopoda spp. 3, S. atrifusca sp. nov., holotype, ♂; 4, S. cellifaria sp. nov., paratype, ♀; 5, S. cornuta sp. nov., holotype, ♂; 6, S. digitiprocessa sp. nov., holotype, ♂; 7, S. dolichantha sp. nov., holotype, ♂; 8, S. falsistimulata sp. nov., paratype, ♀. Scales = 2 mm.

FIGURES 16−21. Male genitalia of Stathmopoda spp. 16, S. atrifusca sp. nov., holotype, slide No. GW14186, 16a, enlarged cornutus; 17, S. cellifaria sp. nov., paratype, slide No. GW13080, 17a, enlarged cornutus; 18, S. cornuta sp. nov., holotype, slide No. GW13100; 19, S. digitiprocessa sp. nov., holotype, slide No. GW12175; 20, S. dolichantha sp. nov., holotype, slide No. GW12245, 20a, enlarged cornutus; 21, S. falsistimulata sp. nov., holotype, slide No. GW15154. Scales: 16–21 = 0.2 mm; 19a, 20a = 0.05 mm; 17a = 0.1 mm.

FIGURES 29−33. Female genitalia of Stathmopoda spp. 29, S. atrifusca sp. nov., paratype, slide No. GW15145, 29a, enlarged signum; 30, S. cellifaria sp. nov., paratype, slide No. GW12270; 31, S. cornuta sp. nov., paratype, slide No. GW13102; 32, S. digitiprocessa sp. nov., paratype, slide No. GW15171, 32a, enlarged signum; 33, S. falsistimulata sp. nov., paratype, slide No. GW15174, 33a, enlarged signum. Scales: 29–33 = 0.5 mm; 29a, 32a, 33a = 0.1 mm.

FIGURES 38−39. Female genitalia of Stathmopoda spp. 38, S. serrifasciaria sp. nov., paratype, slide No. GW15153, 38a, enlarged signum; 39, S. similatridorsalis, slide No. GW13033, 39a, enlarged signum. Scales: 38–39 = 0.5 mm; 38a, 39a = 0.1 mm.