Stathmopoda atrifusca, 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 : 361

Stathmopoda atrifusca sp. nov.

( Figs 3 , 16 , 29 )

Type material. CHINA, Yunnan: Holotype ♂, Taiyanghe, Pu’er , 1450 m, 19.V.2014, leg. ZG Zhang, slide No. GW 14186 . Paratypes: 1♀, 31.III.2014, other same data as holotype, slide No. GW 14187 ; 1♀, Mt. Xiaohei, Longling , 1974 m, 28.VII.2015, leg. KJ Teng & X Bai, slide No. GW 15145 .

Diagnosis. The new species can be distinguished from its congeners by the forewing blackish brown from basal 3/10 to 4/5, ochreous yellow in distal 1/5; in the male genitalia by the valva with a slender inner process curved inward near base by a right angle and the aedeagus with a large rectangular plate near base; in the female genitalia by the broadly tubular ductus seminalis approximately the same length as the corpus bursae.

Description. Adult ( Fig. 3 ). Wingspan 10.5–12.5 mm. Head silvery white, occiput tinged with black scales. Labial palpus with second segment greyish white on inner side, yellowish white on outer side, with a fine blackish brown line in basal half on outer side; third segment blackish brown. Antenna with scape blackish brown, flagellum yellowish brown. Thorax and tegula greyish brown, with scattered blackish brown scales. Forewing greyish white in basal 3/10, blackish brown from basal 3/10 to 4/5, distal 1/5 ochreous yellow; ventral margin with an elliptical blackish brown spot at distal 1/5, approximately 3/4 width of wing; fringe dark brown, black around apex. Hindwing and fringe greyish brown. Foreleg yellowish brown, tarsus black at apex; midleg greyish white ventrally, tibia white dorsally, black at apex, with white bristles at middle and apex, tarsus blackish brown dorsally; hind femur and tibia white, tibia with white bristles at basal 1/3, 2/3 and apex dorsally respectively, black at apex, tarsus dark ochreous yellow, annulated with black at apex of each tarsomere, with black bristles at apices of basal three tarsomeres. Abdomen greyish brown on dorsal surface, greyish white on ventral surface.

Male genitalia ( Fig. 16 ). Uncus sub-trapezoidal, gradually narrowed from base to apex, with long setae laterally; apex approximately 1/3 width of base. Gnathos lingulate, distal 1/3 scobinate. Tegumen bifurcate from middle, lateral arm slightly narrowed anteriorly. Valva basally narrow, subparallel to cucullus; cucullus elliptical, length approximately 1.6 times of maximum width; inner process slender, curved inward near base by a right angle; costa elliptical; sacculus broadly banded, approximately half length of valva, gradually narrowed from distal 1/4 to apex, reaching basal 1/5 of cucullus, apex pointed, not free from cucullus. Vinculum narrowly banded; saccus V-shaped, approximately 1/4 length of uncus. Juxta U-shaped, anterior margin broadly rounded; anellar lobes elongate elliptical, approximately 1.5 times length of juxta, with sparse setae. Aedeagus tapered from base to apex, approximately 4/5 length of valva, with a large rectangular plate near base and numerous microspines at distal 1/3, distal 1/4 produced to a thin club ventrally; cornutus consisting of several large denticles connected at base, located beyond middle ( Fig. 16a ).

Female genitalia ( Fig. 29 ). Intersegmental membrane between papillae anales and eighth abdominal segment approximately same length as papillae anales. Apophyses posteriores approximately 1.5 times length of apophyses anteriores. Eighth segment straight on posterior margin; eighth tergite rectangular; eighth stenite with anterior margin produced semicircularly. Antrum bowl-shaped, slightly concave on posterior margin. Ductus bursae approximately same length as corpus bursae, basal 2/3 almost uniform, distal 1/3 gradually widened. Corpus bursae sub-oval; two signa differently sized, each with a sclerotized ridge on anterior margin, larger one with length more than half maximum width of corpus bursae, approximately 1.5 times length of smaller one ( Fig. 29a ); numerous large denticles at transition between ductus bursae and corpus bursae. Ductus seminalis arising from region of transition between corpus bursae and ductus bursae, broadly tubular, approximately same length as corpus bursae, with dense small granules near apex.

Distribution. China (Yunnan).

Etymology. The specific epithet is derived from the Latin atri- and fuscus, referring to the forewing blackish brown from basal 3/10 to 4/5.

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.