Agriothera microtricha Zheng & Qi & Li 2020, sp. nov.
Creators: name: Zheng, Meiling
name: Qi, Mujie
name: Li, Houhun
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Roeslerstammiidae
Agriothera
Agriothera microtricha

description: Agriothera microtricha sp. nov.
(Figs 3, 12)
Type material. CHINA: Holotype ♀, Yunnan Province: Gaoligong Mountain National Forest Park (24.83°N, 98.77°E), Baoshan City, 2157 m, 24.vii.2015, leg. Kaijian Teng and Xia Bai, genitalia slide No. ZML 17018.
Paratypes: Yunnan Province: 3 ♀♀, same data as holotype, genitalia slide Nos. ZML 18204, ZML 18205, ZML 18433.
Description. Adult (Fig. 3) wingspan 14.0–16.0 mm.
Head vertex densely covered with dark brown hairs mottled with yellowish brown. Frons smoothly yellowwhite, with white rough scales and hairs near vertex. Antenna filiform, longer than forewing, ventral surface pale yellow, dorsal surface: scape inflated, white, tinged with pale yellowish brown; pecten brown; flagellum with basal half fuscous, pale yellow and fuscous alternated from beyond middle to distal 1/6, distal 1/6 being pale yellow. Labial palpus slightly upcurved, second segment with basal 3/4 fuscous, distal 1/4 white but fuscous ventrally; terminal segment slightly shorter than second, apex acute, white.
Thorax dark brown. Tegula yellowish brown. Forewing elongate, dark greyish brown, with golden luster; apex obviously prominent, white ringed black margin; a moderate golden yellow band from base along fold to middle of termen interrupted by short transverse white streak at distal 2/7 of wing-length, lower margin with two pale yellow wedge-shaped stripes inward oblique situated at basal 1/3 and distal 4/9 respectively; fold basal 1/3 beneath pale yellowish brown; two rows fringes grey, overlapped, shorter one appears darker, apex white. Hindwing and fringe grey. Fore and mid legs dark brown dorsally, yellowish brown ventrally, each segment of tarsus ringed white basally; hindleg with femur and tibia pale yellow, scattered with sparse grey scales on outer surface, tibia densely covered with pale yellowish brown hairs both on dorsally and ventrally surfaces, tarsus dark brown on outer surface, ringed with white ring each segment basally, inner surface white.
Female genitalia (Fig. 12). Papillae anales triangular, setose. Apophyses anteriores 0.67× length of apophyses posteriores, basal 2/3 inflated to equilateral triangle; apophyses posteriores with basal half inflated to long ellipse. Eighth tergite nearly rectangle, anterior margin slightly concave, posterior margin almost straight; eighth sternite saddle-shaped, anterior margin and posterior margin both weakly concave, posterior margin with a trapezoidal area bearing dense microtrichiae at middle. Ostium bursae straight, opening below anterior margin of eighth sternite medially but connected with sternite through scallop-shaped membrane. Antrum gradually narrowed distally, as long as eighth sternite, densely with granules on inner surface, posterior margin weakly concave. Ductus bursae 4.5× length of eighth sternite, anterior 1/6 inflated. Corpus bursae rounded. Signum triangle, small, with semicircle base, bearing a longitudinal ridge, situated at boundary of ductus bursae and corpus bursae.
Male: Unknown.
Diagnosis. This species is extremely similar to Agriothera quadrativalva sp. nov. in appearance, but can be recognized by the microtrichiae area on eighth sternite and the shorter ductus bursae in the female genitalia. In Agriothera quadrativalva sp. nov., the eighth sternite lacks microtrichiae and the ductus bursae is extremely slender, more than ten times length of the eighth sternite.
Distribution. China (Yunnan).
Etymology. The specific name is derived from the Latin microtrichus, referring to the microtrichiae area on eighth sternite in female genitalia.
Remarks. Ten species of the genus Agriothera has been recorded prior to this study. Although specimens examined in this study were all female, but we have distinguished Agriothera microtricha sp. nov. from its allies by the female genitalia and external characters, through pictures and descriptions (please refer to Diagnosis).
description: Published as part of Zheng, Meiling, Qi, Mujie & Li, Houhun, 2020, A study on Roeslerstammiidae (Lepidoptera) in the Insect Collection of Nankai University (NKU), with descriptions of three new species, pp. 372-380 in Zootaxa 4728 (3) on page 375, DOI: 10.11646/zootaxa.4728.3.6, http://zenodo.org/record/3626468