Stathmopoda falsistimulata, Wang & Guan & Wang, 2020

Wang, Ailing, Guan, Wei & Wang, Shuxia, 2020, Genus Stathmopoda Herrich-Schäffer, 1853 (Lepidoptera: Stathmopodidae) from China: Descriptions of thirteen new species, Zootaxa 4838 (3), pp. 358-380 : 365-367

Stathmopoda falsistimulata sp. nov.

( Figs 8 , 21 , 33 )

Type material. CHINA, Guangxi: Holotype ♂, Yangmeiao, Huanjiang County, Hechi , 1180 m, 26.VII.2015, leg. MQ Yang & JE Li, slide No. GW 15154. Paratypes. Guangxi: 2♂, 23–25.VII.2015, other same data as holotype, slide No. GW 15173; 3♀, Mt. Dayao, Jinxiu, 1364 m, 19–21.VII.2015, leg. MJ Qi & SN Zhao, slide No. GW 15174; Yunnan: 1♂, Linjiapu , Tengchong , 2144 m, 15.VIII.2014, leg. KJ Teng et al., slide No. GW 15144 .

Diagnosis. The new species is characterized by the forewing having an elliptical ochreous brown spot at basal 2/5 and on outer margin of cell respectively. It is similar to S. purpurata sp. nov. and S. stimulata Meyrick, 1913 , but can be distinguished from them in the male genitalia by the sub-triangular cucullus straight on the ventral margin and the cornutus consisting of 12–16 denticles; and in the female genitalia by the corpus bursae with one elongate elliptical signum. In S. purpurata sp. nov., the ovate cucullus is obtuse on the ventral margin and the cornutus consists of six spines in the male genitalia; and the corpus bursae has one C-shaped signum in the female genitalia; in S. stimulata , the sub-elliptical cucullus is obtuse on the ventral margin and the cornutus consists of 3–5 spines in the male genitalia; and the corpus bursae has two signa in the female genitalia ( Kasy 1973, P. 286, Figs 84, 86).

Description. Adult ( Fig. 8 ). Wingspan 19.0– 19.5 mm. Head with frons and vertex white, occiput brown tinged with purplish brown. Labial palpus with second segment white, blackish brown at base on outer side; third segment brown. Antenna with scape brown; flagellum yellowish brown. Thorax and tegula yellowish white, with scattered blackish brown scales. Forewing yellowish white; costal margin with a blackish brown streak from base narrowed to basal 1/4, then slenderly extending to apex; large inverted triangular blackish brown spot between base and basal 1/4 extending from below fold to above ventral margin; broad blackish brown stripe from ventral margin beyond basal spot extending obliquely upward to basal 1/3 of fold, then slenderly extending along distal 2/3 of fold; cell with an elliptical ochreous brown spot at basal 2/5 and on outer margin respectively; longitudinal straight ochreous brown streak from outer margin of spot at basal 2/5 of cell along anterior margin of spot on outer margin of cell extending to preapex, widened in some individuals; fringe brown. Hindwing and fringe brown. Legs yellowish white; foreleg with femur and tibia blackish brown on outer side, tarsus black at apices of first and fifth tarsomeres; mid tibia blackish brown in basal half on dorsal surface, with long yellowish white bristles at middle and apex; hind tibia with long ochreous brown bristles at basal 1/3, 2/3 and apex respectively, tarsus annulated with blackish brown at apex of each tarsomere, with ochreous brown bristles at apices of basal three tarsomeres. Abdomen yellowish brown.

Male genitalia ( Fig. 21 ). Uncus wide at base, gradually narrowed to apex, with long setae laterally; apex straight, approximately 1/3 width of base. Gnathos wide at base, narrowed to apex. Tegumen with lateral arm slightly narrowed anteriorly. Valva elongately knife-shaped, almost uniformly narrow from base to cucullus; cucullus subtriangular, length approximately 2 times of maximum width, strongly produced before middle on dorsal margin, forming a large obtuse angle, thereafter obliquely obtuse from before middle to apex; ventral margin straight, apex rounded; inner process slender, curved; costa sub-rectangular; sacculus approximately 1/3 length of valva, reaching base of cucullus, apex pointed, not free from cucullus. Vinculum narrowly banded; saccus inverted triangular, approximately 1/4 length of uncus. Juxta widely V-shaped, obtusely rounded anteriorly; anellar lobes elongate elliptical, with short setae, approximately twice length of juxta. Aedeagus tapered from base to apex, approximately 2/3 length of valva, with a small plate near base, distal 1/5 produced to a thin club ventrally; cornutus consisting of 12–16 denticles joined basally, located at basal 1/3.

Female genitalia ( Fig. 33 ). Intersegmental membrane between papillae anales and eighth abdominal segment approximately twice 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. Antrum sub-rectangular, sclerotized on anterior margin, slightly produced anteromedially, slightly concave posteromedially. Ductus bursae almost uniform, approximately 3/4 length of corpus bursae. Corpus bursae oval; signum elongate elliptical, with a sclerotized ridge, serrate on posterior margin ( Fig. 33a ). Ductus seminalis arising from posterior 1/3 of corpus bursae, broadly tubular, approximately twice length of corpus bursae, curved at about middle, then extending upward, with dense granules near apex; two rows of denticles at transition between corpus bursae and ductus seminalis.

Distribution. China (Fujian, Guangxi).

Etymology. The specific epithet is derived from the Latin falsi- and the specific name of another species stimulata , referring to the similarities of the two species.

Figures

FIGURES 3−8. Adults of Stathmopoda spp. 3, S. atrifusca sp. nov., holotype, ♂; 4, S. cellifaria sp. nov., paratype, ♀; 5, S. cornuta sp. nov., holotype, ♂; 6, S. digitiprocessa sp. nov., holotype, ♂; 7, S. dolichantha sp. nov., holotype, ♂; 8, S. falsistimulata sp. nov., paratype, ♀. Scales = 2 mm.

FIGURES 16−21. Male genitalia of Stathmopoda spp. 16, S. atrifusca sp. nov., holotype, slide No. GW14186, 16a, enlarged cornutus; 17, S. cellifaria sp. nov., paratype, slide No. GW13080, 17a, enlarged cornutus; 18, S. cornuta sp. nov., holotype, slide No. GW13100; 19, S. digitiprocessa sp. nov., holotype, slide No. GW12175; 20, S. dolichantha sp. nov., holotype, slide No. GW12245, 20a, enlarged cornutus; 21, S. falsistimulata sp. nov., holotype, slide No. GW15154. Scales: 16–21 = 0.2 mm; 19a, 20a = 0.05 mm; 17a = 0.1 mm.

FIGURES 29−33. Female genitalia of Stathmopoda spp. 29, S. atrifusca sp. nov., paratype, slide No. GW15145, 29a, enlarged signum; 30, S. cellifaria sp. nov., paratype, slide No. GW12270; 31, S. cornuta sp. nov., paratype, slide No. GW13102; 32, S. digitiprocessa sp. nov., paratype, slide No. GW15171, 32a, enlarged signum; 33, S. falsistimulata sp. nov., paratype, slide No. GW15174, 33a, enlarged signum. Scales: 29–33 = 0.5 mm; 29a, 32a, 33a = 0.1 mm.