Stathmopoda basirotata, 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 : 453-454

Stathmopoda basirotata sp. nov.

( Figs 2 , 15 , 28 )

urn:lsid:zoobank.org:act:075EC528-7A97-4325-9B49-7F0642E00215

Type material. CHINA, Yunnan: Holotype ♂, Mt. Gaoligong (25.29°N, 98.80°E), Baoshan, 1473 m, 30.VII.2013, leg. SR Liu et al., slide No. GW 13114 . Paratypes. 1♀, same data as holotype, slide No. GW 13115; 1♂, 5.VIII.2014, other same data as holotype, leg. KJ Teng et al., slide No. GW 15016; 1♂, Taiyanghe, Pu’er, 8.IV.2015, leg. KJ Teng.

Diagnosis. The new species is similar to S. tecticochlea Terada, 2016 superficially, but it can be distinguished in the male genitalia by the cucullus of the valva obtusely rounded at apex, and in the female genitalia by the signum 1/5 the length of the maximum width of the corpus bursae. In S. tecticochlea , the cucullus of the valva is truncate at apex, and the length of the signum is more than half the maximum width of the corpus bursae.

Description. Adult ( Fig. 2 ). Wingspan 8.5–9.5 mm. Head with frons and vertex silvery grey, with metallic lustre; occiput grey medially, purplish black laterally. Labial palpus with second segment silvery white on inner surface, pale yellow on outer surface; third segment deep silvery grey on inner surface, black on outer surface. Antenna purplish black, with metallic lustre; flagellum silvery white in distal 1/6 dorsally. Thorax greyish brown, with longitudinal ochreous yellow streak posterolaterally; tegula greyish brown. Forewing silvery grey, purplish black at base and in distal 1/4, with metallic lustre; costal margin with an inverted trapezoidal ochreous spot from between basal 1/6 and 2/5 reaching posterior 1/3 from ventral margin, its inner margin straight and edged with purplish black scales, outer margin roundly concave inward; elliptical purplish black spot from between basal 2/5 and middle of costal margin reaching middle of cell posteriorly; longitudinal ochreous streak in distal 2/5 of cell, edged with purplish black line on anterior and posterior margins respectively; fold with an ochreous streak along distal 1/4, edged with purplish black; fringe dark grey. Hindwing brown; fringe pale greyish brown. Fore femur grey, tibia and tarsus dark grey; midleg silvery grey, tibia blackish grey except silvery grey at basal 2/3; hindleg blackish grey except femur silvery grey, tibia ochreous in basal half, with long ochreous brown bristles at middle and apex dorsally, tarsus ringed with ochreous bristles at apices of basal three tarsomeres, white on distal two tarsomeres. Abdomen black on dorsal surface, greyish white on ventral surface, terminal segment greyish white.

Male genitalia ( Fig. 15 ). Uncus sub-rectangular, with long setae laterally; apex slightly narrowed, shallowly concave medially, with a pair of horn-shaped spines. Gnathos sub-triangular, in middle of tegumen, less than half length of uncus. Tegumen with height approximately twice length of uncus; posterior 2/3 almost uniformly wide, anterior 1/3 circular, sclerotized. Valva narrow at base, widened to obtusely rounded apex; cucullus sub-rounded, obtuse at apex; inner process conical; sacculus banded, reaching apex of valva apically, ventral margin straight in basal 2/3, obtuse in distal 1/3. Vinculum narrowly banded; saccus inverted U-shaped, approximately half length of uncus. Juxta obtusely rounded on posterior margin, narrowed anteriorly; anellar lobes elongate elliptical. Aedeagus roundly dilated in basal 1/3, narrowly cylindrical in distal 2/3, with three narrowly sclerotized bars: two running from middle of rounded part to basal 2/3 and to apex respectively, third sclerotized bar very long, curved near base, extending ventrad from middle of rounded basal part, coiled twice around basal part, then sinuate to apex, apex hooked ventrad.

Female genitalia ( Fig. 28 ). Intersegmental membrane between papillae anales and eighth abdominal segment approximately 12 times length of papillae anales. Eighth segment sub-rectangular, with short setae on posterior margin. Intersegmental membrane between seventh and eighth segments approximately 1.2 times length of eighth segment. Seventh abdominal segment with dense denticles on anterior 1/3. Antrum sub-rectangular. Ductus bursae narrow, approximately same length as corpus bursae. Corpus bursae oval; signum with a sclerotized ridge at middle, serrate on posterior margin, length approximately 1/5 of maximum width of corpus bursae. Ductus seminalis originating from region of transition between ductus bursae and corpus bursae, tubular basally, gradually narrowed distally; bulla roundly inflated, at middle of ductus seminalis.

Distribution. China (Yunnan).

Etymology. This specific epithet is derived from the Latin basi- and rotatus, referring to the basally rotated aedeagus.

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.