Frisilia motuoensis, Yu & Wang, 2021

Yu, Shuai & Wang, Shuxia, 2021, Three new species and one newly recorded species of genus Frisilia Walker (Lepidoptera, Lecithoceridae) from China, with a checklist of the world, Zootaxa 4926 (1), pp. 65-78 : 70

publication ID	https://doi.org/ 10.11646/zootaxa.4926.1.4
publication LSID	lsid:zoobank.org:pub:64BEC15C-5E2A-4FB5-815B-1ABD7E9D5062
DOI	https://doi.org/10.5281/zenodo.4532517
persistent identifier	https://treatment.plazi.org/id/9D96C214-C7D6-47CB-84AE-FA6F73D0EE29
taxon LSID	lsid:zoobank.org:act:9D96C214-C7D6-47CB-84AE-FA6F73D0EE29
treatment provided by	Plazi
scientific name	Frisilia motuoensis
status	sp. nov.

Treatment

Frisilia motuoensis View in CoL sp. nov.

( Figs 8 View FIGURES 6‒9 , 12, 15 View FIGURES 10‒16 , 19 View FIGURES 17‒20 , 22 View FIGURES 21‒23 )

urn:lsid:zoobank.org:act:9D96C214-C7D6-47CB-84AE-FA6F73D0EE29

Type material. CHINA, Xizang: Holotype ³, Beibengxiang (29°14′N, 95°19′E), Motuo County, 810 m, 12.VIII.2017, leg. MJ Qi & XF Yang GoogleMaps , slide No. YS20013 . Paratypes (6³ 9♀): 3³ 6♀, same data as holotype except dated 12‒15.VIII.2017 , slide Nos. YS 20007 ♀, YS20010³, YS20014 ♀; 2♀, Gelin Village, Beibengxiang , Motuo County, 1063 m, 29.VII.2018, leg. MJ Qi ; 1³, Jiangxin Village, Beibengxiang , Motuo County, 780 m, 30.VII.2018, leg. MJ Qi ; 1♀, Fangkongdong, Beibengxiang , Motuo County, 750 m, 31.VII.2018, leg. MJ Qi ; 1³, Yadong Village, Motuo County, 833 m, 16.VIII.2017, leg. MJ Qi & XF Yang , slide No. YS 20006; 1³, Motuo County, 1097 m, 3.VIII.2018, leg. MJ Qi.

Diagnosis. The new species is similar to F. trisigna sp. nov. in appearance and male genitalia. It can be distinguished in the male genitalia by the ventrobasal process of the cucullus shorter than its basal width, the vinculum triangularly produced anteriorly, and in the female genitalia by the corpus bursae with a single signum; in F. trisigna sp. nov., the ventrobasal process of the cucullus is longer than its basal width, the vinculum is obtusely rounded anteriorly, and the corpus bursae has three signa.

Description. Adult ( Figs 8 View FIGURES 6‒9 , 12, 15 View FIGURES 10‒16 ). Wingspan 15.5‒18.0.

Head: yellowish brown, with orange-white scales laterally. Antenna pale yellow; scape yellowish brown on posterior margin, with a yellowish-brown scale tuft at base dorsally; flagellum yellowish brown at base on posterior margin, ringed with yellowish brown becoming darker toward apex, with appressed elongate scales dorsally in basal 1/6. Labial palpus in male orange white mixed with yellowish brown basally, greyish black distally; in female second palpomere orange white on inner surface, brownish yellow on outer surface, third palpomere orange white dorsally, dark brown ventrally.

Thorax: Thorax and tegula yellowish brown. Forewing with costal margin slightly arched, apex obtusely produced, termen concave below apex; ground color orange white, mixed with brownish-yellow and blackish-brown scales, yellowish brown on tornal area; humeral streak blackish brown, about 1/5 length of costal margin; discal and discocellular stigmata blackish brown, rounded, nearly same size; subdorsal groove in male covered with brush-like yellowish-brown scales in basal 1/3 and brownish-yellow scales in distal 2/3; termen with a narrow blackish-brown band; fringe yellowish brown, tinged with greyish brown; R 5 to termen, R 5 stalked with R 4, R 4+5 about half length of R 5, R 4+5 stalked with R 3, R 3+4+5 nearly as long as R 3, M 1 close to R 3+4+5 at base, M 2 and M 3 almost arising from same point, CuA 1 and CuA 2 separated. Hindwing grey; fringe dark yellowish brown; M 2 present, M 3 and CuA 1 about four times longer than CuA 1. Legs pale yellow dorsally, brown ventrally except orange white at apex of each tarsomere.

Male genitalia ( Fig. 19 View FIGURES 17‒20 ). Uncus inverted trapezoidal, shallowly concave on posterior margin; caudal lobe triangular, extending obliquely outward. Gnathos with basal plate triangularly produced posteriorly; median process broad in basal half, abruptly narrowed from middle to a pointed apex, medially bent ventrad at a right angle. Valva wide at base, narrowed to cucullus; cucullus widened medially, narrowed from middle to broadly rounded apex, straight on costal margin, with a small sub-triangular process at base on ventral margin, shorter than basal width of cucullus; costal bar narrow, triangularly produced at middle on dorsal margin; sacculus wide in basal half, narrowed from middle to before distal 1/4, thereafter slender to cucullus. Vinculum slightly produced anteriorly. Juxta shield-shaped, posterior margin notched at middle, produced to an upright triangular process at lateral side of notch, anterior margin with a short process at middle; posterolateral lobe narrowly banded, extending outward. Aedeagus shorter than valva, nearly tubular, arched; cornuti consisting of two horns, cornutus near base with a narrow, ventrally serrate basal plate, the other with a weakly sclerotized basal plate.

Female genitalia ( Fig. 22 View FIGURES 21‒23 ). Eighth abdominal sternite shallowly concave on posterior margin. Apophyses posteriores slightly shorter than twice length of apophyses anteriores. Antrum weakly sclerotized, spiculose ( Fig. 22a View FIGURES 21‒23 ). Ductus bursae nearly as long as corpus bursae, widened anteriorly, with some spines and a plate bearing four spines before entrance of corpus bursae; ductus seminalis much slender, arising from ductus bursae anteriorly, with dense spinules on inner wall ( Fig. 22b View FIGURES 21‒23 ). Corpus bursae elliptical; signum elliptical, densely denticulate, placed posterior to middle.

Distribution. China (Xizang).

Etymology. The specific epithet is derived from the type locality.