Stathmopoda pyriformis, Wang & Wang & Guan, 2021

Wang, Ailing, Wang, Shuxia & Guan, Wei, 2021, Genus Stathmopoda Herrich-Schäffer, 1853 (Lepidoptera: Stathmopodidae) from China: Descriptions of ten new species, Zootaxa 4908 (4), pp. 451-472 : 460-461

Stathmopoda pyriformis sp. nov.

( Figs 8 , 21 , 34 )

urn:lsid:zoobank.org:act:753503D5-A08B-42CC-901A-AB1CABC3A842

Type material. CHINA, Yunnan: Holotype ♂, Xiaodifangxin Village (24.87°N, 98.75°E), Tengchong, 2116 m, 11.VIII.2014, leg. KJ Teng et al., slide No. GW 15086 . Paratypes. 1♂ 1♀, 11.VIII.2014, other same data as holotype, slide No. GW 15087 ♀ ; 1♂, Laiyanghe, Pu’er , 26.VIII.2009, leg. XC Du, slide No. GW 13005; 1♂ 2♀ , Taiyanghe , 1450 m, 30.VII–2.IX.2014, leg. ZG Zhang, slide No. GW 14183 ♀ ; 1♀ , Taiyanghe , 1450 m, 7. VI.2015, leg. ZG Zhang, slide No. NKUGW020 ; 1♀ , Nanhang, Baoshan , 2009 m, 16.VII.2014, leg. KJ Teng & X Bai.

Diagnosis. The new species is similar to S. tristriata sp. nov. in having a brownish ochreous forewing. It can be distinguished by the forewing with two faint pale ochreous spots on the ventral margin; in the male genitalia by the triangularly produced costa, and the sacculus straight on the ventral margin; in the female genitalia by the subrectangular antrum, and the pear-shaped corpus bursae with a sub-rhombic signum. In S. tristriata , the forewing has three ochreous yellow hook-shaped stripes on the ventral margin; the costa is roundly produced, and the sacculus is concave at basal 1/3 on the ventral margin; the antrum is sub-quadrate and the elongate elliptical corpus bursae has a sub-triangular signum in the female genitalia. It is also similar to S. hamulata sp. nov. internally, and the differences between them are stated in the diagnosis of the latter species.

Description. Adult ( Fig. 8 ). Wingspan 10.5–12.5 mm. Head with frons silvery white, vertex silvery white mixed with pale ochreous, occiput ochreous. Labial palpus with second segment cream white on inner surface, pale yellowish brown on outer surface; third segment brown. Antenna with scape pale ochreous, tinged with brown scales, silvery white on anterior margin; flagellum brown alternated with white. Thorax and tegula ochreous. Forewing brownish ochreous; costal margin with a faint pale ochreous streak from basal 2/3 extending obliquely inward to posterior margin of cell, indistinct in some individuals; ventral margin with faint pale ochreous spot at basal 1/4 and distal 1/4 respectively, the former reaching fold anteriorly; fringe brown. Hindwing dark grey, fringe greyish brown. Legs ochreous yellow dorsally, yellowish white ventrally: foreleg black on outer side; mid tibia with blackish brown spot at base, middle and apex respectively, with long ochreous yellow bristles at middle and apex, tarsus black at apex; hind tibia with long blackish brown bristles at basal 1/3, 2/3 and apex respectively, mixed with ochreous brown, tarsus ringed with long blackish brown bristles at apex of first tarsomere, mixed with ochreous brown, blackish brown at apex of each tarsomere. Abdomen greyish brown on dorsal surface, white on ventral surface.

Male genitalia ( Fig. 21 ). Uncus sub-triangular, wide at base, narrowed to apex, beak-shaped in lateral view, with long setae laterally. Gnathos wide at base, slightly narrowed to apex; apex rounded, with a small tooth medially. Tegumen with height approximately twice length of uncus. Valva wide basally, narrowly toward cucullus; cucullus narrowly elongate, length approximately 2.5 times of maximum width, extending obliquely upward, slightly narrowed to rounded apex, straight on dorsal margin, obtuse on ventral margin; inner process hooked; costa produced triangularly; sacculus approximately 3/5 length of valva, straight on ventral margin, apex obtuse, free from cucullus. Vinculum narrowly banded; saccus U-shaped, approximately 1/6 length of uncus. Juxta ovate; anellar lobes elongate conical, twice length of juxta. Aedeagus same length as valva, slightly tapered from base to apex; distal process slender, 1/3 length of aedeagus; cornutus consisting of a tuft of differently sized spines ranging from near base to before distal 1/3.

Female genitalia ( Fig. 34 ). Intersegmental membrane between papillae anales and eighth abdominal segment approximately 2.5 times length of papillae anales.Apophyses posteriores approximately 1.7 times length of apophyses anteriores. Eighth segment straight on posterior margin, with long setae; eighth stenite with anterior margin produced obtusely. Antrum sub-rectangular, concave on anterior and posterior margins. Ductus bursae almost uniformly wide. Corpus bursae pear-shaped; signum sub-rhombic, with a long sclerotized ridge medially. Ductus seminalis originating from posterior part of corpus bursae, dilated basally, with two rows of clustered spines different in size in transition between ductus bursae and ductus seminalis ( Fig. 34a ).

Distribution. China (Yunnan).

Etymology. This specific epithet is derived from the Latin pyriformis , referring to the shape of the corpus bursae.

Figures

FIGURES 2‒9. Adults of Stathmopoda spp. 2, S. basirotata sp. nov., holotype, ♂; 3, S. bicoloriptera sp. nov., holotype, ♂; 4, S. bucera sp. nov., paratype, ♀; 5, S. hamulata sp. nov., holotype, ♂; 6, S. ochricolorata sp. nov., holotype, ♂; 7, S. octacantha sp. nov., paratype, ♂; 8, S. pyriformis sp. nov., paratype, ♀; 9, S. rhombica sp. nov., holotype, ♂. Scales = 2 mm.

FIGURES 21‒27. Male genitalia of Stathmopoda spp. 21, S. pyriformis sp. nov., holotype, slide No. GW15086; 22, S. rhombica sp. nov., holotype, slide No. GW15175; 23, S. tetracantha sp. nov., holotype, slide No. GW13173; 24, S. tristriata sp. nov., holotype, slide No. GW15084; 25, S. citrinella, slide No. GW13127; 26, S. orbiculata, slide No. GW15051; 27, S. tecticochlea, slide No. GW15048. Scales = 0.2 mm.

FIGURES 33‒36. Female genitalia of Stathmopoda spp. 33, S. octacantha sp. nov., paratype, slide No. GW15070; 34, S. pyriformis sp. nov., paratype, slide No. GW15087, 34a, enlarged spines; 35, S. rhombica sp. nov., paratype, slide No. GW13009; 36, S. tetracantha sp. nov., paratype, slide No. GW13172. Scales: 33–36 = 0.5 mm, 34a = 0.2 mm.