Stathmopoda similatridorsalis Wang & Guan & Wang 2020, sp. nov.
Creators: name: Wang, Ailing
name: Guan, Wei
name: Wang, Shuxia
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Heliodinidae
Stathmopoda
Stathmopoda similatridorsalis

description: Stathmopoda similatridorsalis sp. nov.
(Figs 14, 27, 39)
Type material. CHINA, Jiangxi: Holotype ♂, Mt. Feng, 17.VII.2006, leg. JS Xu & WC Li, slide No. GW13032. Paratypes. 1♀, other same data as holotype, slide No. GW 13033; 1♀, Mt. Jiulian, Jiangxi, 20.VII.2006, leg. JS Xu & WC Li, slide No. GW 13036; Hainan: 1♀, Yajia, Bawangling, Changjiang County, 245 m, 7. V.2013, leg. YH Sun et al., slide No. GW 13078.
Diagnosis. The new species is similar to S. atridorsalis Terada, 2014 and S. centihasta Terada, 2014. It can be distinguished from S. atridorsalis in the male genitalia by the uncus beak-shaped distally in the lateral view and the broadly V-shaped juxta; in the female genitalia by the corpus bursae with two small signa and the ductus seminalis triangularly inflated distally. In S. atridorsalis, the uncus is truncate at apex and the juxta is sub-rectangular in the male genitalia; the corpus bursae has two large signa and the ductus seminalis is not inflated distally in the female genitalia (Terada 2014, P. 110, Figs 29, 33). It can be distinguished from S. centihasta in the male genitalia by the cucullus convex at dorsal 1/3 and the broadly V-shaped juxta, and in the female genitalia by the ductus bursae with wrinkles in anterior 1/3; in S. centihasta, the cucullus is convex near base and the juxta is trapezoidal in the male genitalia, and the ductus bursae lacks wrinkles anteriorly in the female genitalia (Terada 2014, P. 117, Figs 43, 47).
Description. Adult (Fig. 14). Wingspan 11.5–19.0 mm. Head with frons and vertex shining white, occiput yellowish white mixed with black. Labial palpus with second segment shining white on inner side, pale yellowish brown on outer side, with a fine dark brown line on outer side basally, third segment pale yellowish brown. Antenna pale yellowish brown; scape white on anterior margin, with scattered blackish brown scales distally. Thorax and tegula yellowish white, with scattered brown scales. Forewing yellowish white, with a yellowish brown spot at base between vein Sc and fold; costal margin blackish brown along basal 1/3; cell with a rounded brown spot at middle and an inverted triangular brown spot at outer margin respectively; ventral margin with blackish brown spot at base, with an ochreous yellow streak from basal 1/5 extending obliquely outward to middle of fold, then along fold to apex; distal 1/6 with a brown stripe along midline; fringe greyish brown, blackish brown around apex. Hindwing and fringe greyish brown. Foreleg greyish white, femur and tibia blackish brown on outer side; midleg greyish white, tibia blackish brown in basal 1/3 dorsally, with white bristles at basal 1/3 and apex, tarsus black at apex; hindleg yellow, tibia with scattered blackish brown scales on dorsal surface, with long ochreous brown bristles at basal 1/3, 2/3 and apex respectively, tarsus black at apex of each tarsomere, with pale yellowish brown bristles at apices of basal three tarsomeres. Abdomen pale grey on dorsal surface, greyish white on ventral surface. Male with a tuft of colcitas, located at posterior margin of eighth abdominal segment.
Male genitalia (Fig. 27). Uncus wide at base, gradually narrowed to apex, distally beak-shaped in lateral view, with long setae laterally. Gnathos narrowed to apex. Tegumen with height approximately twice length of uncus, bifurcate in anterior half, narrowed anteriorly. Valva equally narrow from base to before cucullus; cucullus oval, length approximately 1.5 times of maximum width, strongly convex at basal 1/3 on dorsal margin, narrowed from basal 1/3 to apex, obtuse on ventral margin, rounded at apex; inner process thin clubbed; costa sub-rectangular; sacculus approximately 2/5 length of valva, reaching ventral 1/5 of cucullus, apex pointed, not free from cucullus. Saccus semicircular, approximately 1/4 length of uncus. Juxta broadly V-shaped, obtusely rounded on anterior margin; anellar lobes elongate conical, approximately 1.5 times length of juxta, with short setae. Aedeagus tapered from base to apex, approximately 3/4 length of valva, with a sclerotized plate near base, distal 1/4 produced to a thin club, pointed apically; cornutus consisting of five spines joined at base, located at middle.
Female genitalia (Fig. 39). Intersegmental membrane between papillae anales and eighth abdominal segment approximately 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 rectangular; eighth stenite with anterior margin produced triangularly. Antrum sub-rectangular, slightly concave on posterior margin. Ductus bursae approximately same length as corpus bursae, almost uniform in posterior 2/3, widened and rugose in anterior 1/3, slightly convex on one side. Corpus bursae rounded; with two small signa, each signum with a sclerotized ridge, posterior signum approximately twice length of anterior signum, approximately 1/4 width of corpus bursae, serrate on anterior margin (Fig. 39a); two rows of large denticles at transition between ductus bursae and corpus bursae. Ductus seminalis arising from region of transition between ductus bursae and corpus bursae, broadly tubular, distal 1/3 inflated triangularly.
Distribution. China (Hainan, Jiangxi); Sri Lanka, Russia.
Etymology. The specific epithet is derived from the Latin simil- and the name of another species, referring to the similarities of the two species in the male genitalia.
description: Published as part of Wang, Ailing, Guan, Wei & Wang, Shuxia, 2020, Genus Stathmopoda Herrich-Schäffer, 1853 (Lepidoptera: Stathmopodidae) from China: Descriptions of thirteen new species, pp. 358-380 in Zootaxa 4838 (3) on pages 372-373, DOI: 10.11646/zootaxa.4838.3.3, http://zenodo.org/record/4404120