Stathmopoda hamulata, 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 : 457-458

Stathmopoda hamulata sp. nov.

( Figs 5 , 18 , 31 )

urn:lsid:zoobank.org:act:6001369B-5241-415C-B224-6B0BE385D4CD

Type material. CHINA, Hebei: Holotype ♂, Mt. Wuling (40.63°N, 117.43°E), Xinglong County, 1000 m, 17. VI.2014, leg. SR Liu et al., slide No. GW14234 . Paratypes. 5♀, 16–17. VI.2014, same data as holotype, slide No. GW14235 ; Tianjin: 1♀, Heishuihe, Mt. Baxian , Ji County, 550 m, 10. VI.2009, leg. BB Hu et al .; Henan: 2♀, Mt. Gan , Shan County, 1100 m, 1.VI.2000, leg. MC Wei, slide Nos. GW 12272, GW13050; 1♂, Baotianman, Neixiang, 1200 m, 31.V.2006, leg. JM Lv & X Zhang, slide No. ZZW07157.

Diagnosis. The new species can be distinguished by the forewing with a dark brown basal patch and a wide brown streak running from basal 1/4 of cell to preapex. It is similar to S. tristriata sp. nov. and S. pyriformis sp. nov. internally, but can be distinguished from them in the male genitalia by the gnathos hooked apically and the aedeagus without cornutus; in the female genitalia by the narrowly bow-shaped signum. In S. tristriata and S. pyriformis , the gnathos is broadly rounded apically and the aedeagus has a cornutus; the signum is sub-triangular in S. tristriata , while it is sub-rhombic in S. pyriformis .

Description. Adult ( Fig. 5 ). Wingspan 11.0–14.0 mm. Head with frons and vertex silvery white, vertex tinged with ochreous yellow, occiput blackish brown. Labial palpus with second segment silvery white on inner surface, pale yellowish brown and with longitudinal slender dark brown line in basal half on outer surface; third segment brown. Antenna yellow, scape silvery white on anterior margin, flagellum pale brown at apex. Thorax and tegula yellowish brown. Forewing pale yellowish brown, ochreous yellow in some individuals, with a dark brown patch occupying basal 1/8 of wing; costal margin with a brown streak along basal 3/5; longitudinal wide brown streak from basal 1/4 to outer margin of cell, then curved and becoming weak to costal margin before apex of wing, almost touching costal streak basally; slender dark brown streak extending from basal 2/5 to 4/5 of fold; fringe greyish brown. Hindwing and fringe greyish brown. Legs yellowish white; fore femur and tibia blackish brown on outer side, tarsus blackish brown on outer side; mid tibia with pale yellowish brown scales at base and middle, tarsus black at apex; hind tibia blackish brown, with long ochreous brown bristles at middle and apex, tarsus blackish brown, with long ochreous brown bristles at apex of first tarsomere, black at apex. Abdomen dark brown on dorsal surface, cream white on ventral surface.

Male genitalia ( Fig. 18 ). Uncus elongate triangular, wide basally, narrowed toward basal 3/4, parallel from distal 1/4 to obtuse apex, with long setae laterally. Gnathos wide basally, narrowed to apex, hooked apically. Tegumen with height approximately 1.5 times length of uncus. Valva wide at base, narrowed toward cucullus; cucullus sub-ovate, straight on dorsal margin, obtuse on ventral margin, rounded at apex; inner process hooked; costa convex roundly; sacculus slightly concave near base on ventral margin, apex obtusely rounded, free from cucullus. Vinculum narrowly banded. Juxta oval; anellar lobes elongate conical, narrowed from base to apex, approximately twice length of juxta. Aedeagus same length as valva, almost uniformly broad before distal 7/10, with microspines medially ( Fig. 18a ); distal process slender, 3/5 length of aedeagus, pointed at apex; cornutus absent.

Female genitalia ( Fig. 31 ). Intersegmental membrane between papillae anales and eighth abdominal segment approximately three times length of papillae anales. Apophyses posteriores approximately twice length of apophyses anteriores. Eighth segment straight on posterior margin, with long setae; eighth tergite straight on anterior margin; eighth stenite produced anteriorly. Antrum sub-quadrate. Ductus bursae almost uniform, slightly dilated distally, approximately half length of corpus bursae, with several denticles anteriorly. Corpus bursae pear-shaped; signum narrowly bow-shaped, serrate on anterior margin. Ductus seminalis originating from posterior part of corpus bursae, short, dilated basally, narrow distally.

Distribution. China (Hebei, Henan, Tianjin).

Etymology. This specific epithet is derived from the Latin hamulatus, referring to the apically hooked gnathos.

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 15‒20. Male genitalia of Stathmopoda spp. 15, S. basirotata sp. nov., holotype, slide No. GW13114; 16, S. bicoloriptera sp. nov., holotype, slide No. GW14221; 17, S. bucera sp. nov., paratype, slide No. GW13112; 18, S. hamulata sp. nov., holotype, slide No. GW14234, 18a, enlarged microspines; 19, S. ochricolorata sp. nov., holotype, slide No. GW14206; 20, S. octacantha sp. nov., paratype, slide No. GW14210. Scales: 15–19 = 0.2 mm, 20 = 0.25 mm, 18a = 0.05 mm.

FIGURES 28‒32. Female genitalia of Stathmopoda spp. 28, S. basirotata sp. nov., paratype, slide No. GW13115; 29, S. bicoloriptera sp. nov., paratype, slide No. GW14222; 30, S. bucera sp. nov., paratype, slide No. GW15141; 31, S. hamulata sp. nov., paratype, slide No. GW14235; 32, S. ochricolorata sp. nov., paratype, slide No. GW14207, 32a, enlarged spines. Scales: 28–32 = 0.5 mm, 32a = 0.1 mm.