Irepacma curticylindra Wang & Xu & Li 2022, sp. nov.
Creators: name: Wang, Shuxia
name: Xu, Zhixin
name: Li, Suran
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Oecophoridae
Irepacma
Irepacma curticylindra

description: Irepacma curticylindra Wang, sp. nov.
(Figs 2, 10, 17)
Type material. CHINA, Yunnan: Holotype ♁, Taiyanghe, 1150 m, 11.V.2014, leg. ZG Zhang, slide No. XZX20524.
Paratype: 1♀, same data as holotype, slide No. XZX20519.
Diagnosis. The new species can be distinguished from its congeners by the tegumen with lateral arms folded inward lateromedially, the valva with a spine-shaped process near the base on the ventral margin, and the sacculus produced to a large horn-shaped process distally.
Description. Adult (Fig. 2). Wingspan 20.5‒21.0 mm.
Head yellow, mixed with black scales. Labial palpus yellow, with scattered black scales. Antenna yellow on ventral surface; on dorsal surface, scape black except yellow at apex, flagellum alternately black and yellow.
Thorax. Mesonotum and tegula yellow, mixed with black scales. Forewing yellow, with scattered brown scales, with dense black scales at base of costal margin; discal, discocellular and plical stigmata black; fringe yellow, mottled with black. Hindwing gray; fringe yellow, mixed with gray. Legs yellow, with exceptions: on ventral surface, femur of foreleg black, tibia black ringed with yellow at middle and at apex, femur of midleg with gray black scales, tibia black at base and in distal half, tarsi of fore- and midlegs black at middle of first tarsomere and at base of other tarsomeres; on outer surface: tibia of hindleg with black scales, tarsus black at middle of first tarsomere and at base of other tarsomeres.
Male genitalia (Fig. 10). Uncus reduced, represented by a minute process. Gnathos tongue-shaped, densely setose. Tegumen rectangular medially; lateral arm slightly dilated near apex, outer margin folded inward medially. Valva subparallel basally, dilated distally, setose ventrodistally, rounded at apex; ventral margin with spine-shaped process near base; costa banded, widened distally, not reaching dorso-apex of valva. Sacculus 2/3 as long as valva, basal half uniformly wide, with short cylindrical process near ventral margin, distal half produced dorsally to large horn-shaped process with two small apical denticles. Saccus subtriangular, apex obtusely rounded. Juxta subtrapezoidal, with two longitudinal, parallel-sided ridges medially.Aedeagus widened at proximal base, narrowed and parallel from near base to before basal 1/5, distal 4/5 wide, slightly tapered to apex, with dense denticles, serrate on margin distally.
Female genitalia (Fig. 17). Papilla analis bell-shaped, setose. Eighth sternal plate concave at middle, with long setae posteriorly. Lamella postvaginalis consisting of two rough ovoid plates. Antrum subrectangular, with a band extending from posterolateral corner to anterolateral corner of eighth tergum, forming a large lateral ring. Ductus bursae narrowed towards corpus bursae, densely granulate, with a line of fine spines at basal 2/5 medially and with short strong spines in posterior 3/5. Corpus bursae longer than ductus bursae, granulate; signum small, being a large thorn bearing several teeth.
Distribution. China (Yunnan).
Etymology. The specific epithet is derived from the Latin curtus and cylindrus, referring to the short cylindrical process of the sacculus.
description: Published as part of Wang, Shuxia, Xu, Zhixin & Li, Suran, 2022, Description of eight new species of the genus Irepacma Moriuti, Saito & Lewvanich (Lepidoptera: Autostichidae) from China, pp. 37-48 in Zootaxa 5222 (1) on pages 38-39, DOI: 10.11646/zootaxa.5222.1.2, http://zenodo.org/record/7456331