Ashibusa apicodonta Zhang & Li 2023, sp. nov.
Creators: name: Zhang, Di
name: Li, Houhun
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Cosmopterigidae
Ashibusa
Ashibusa apicodonta

description: Ashibusa apicodonta Li, sp. nov.
urn:lsid:zoobank.org:act: AE9503F4-933E-4895-B22F-C58CE355C751
(Figs 4, 12, 20)
Type material. CHINA, Hainan: Holotype ♂, Yinggeling, 620 m, 18.IV.2010, leg. BB Hu & J Zhang, slide No. ZD 21383.
Paratypes: 1♀, Yinggeling, 620 m, 7. V.2010, leg. BB Hu & J Zhang, slide No. ZD 21457; 1♂, Yajia, Bawangling, Changjiang County (19.10°N, 109.11°E), 245 m, 8. V.2013, leg. YH Sun et al., slide No. ZD 21393; 1♂, Mt Wuzhi, Wuzhishan County (18.91°N, 109.68°E), 710 m, 20.IV.2014, leg. TT Liu et al., slide No. ZD 21463; 1♀, Hongkan, Yinggeling (19.08°N, 109.50°E), 540 m, 25.VII.2015, leg. QY Wang et al., slide No. ZD 21384.
Diagnosis. The new species can be distinguished from its congeners by the forewings having a pink speckle and a cream fascia with a black spot at its middle; in the male genitalia by the right brachium of the socius produced outward to a triangular process medially, and the phallus with an odontoid process at apex; and in the female genitalia by having an elongate cylindrical sterigma.
Description. Adult (Fig. 4). Wingspan 11.5–13.0 mm.
Head. Vertex and frons white, mixed with yellow and brown laterally. Antennae with scape white except brown at apex dorsally, pale brown ventrally; flagellum pale yellow, alternated with dark brown on dorsal surface. Labial palpi white; second palpomere yellow with deep brown scales at apex, third palpomere deep brown mottled with yellow at basal 2/5 and near apex.
Thorax. Dorsum of mesothorax and tegulae white, with orange yellow stripes. Forewings yellowish brown, covered with black scales in basal half, mixed with white scales near base; pink speckle extending from basal 1/4 of costal margin to fold, then bifurcated, its inner branch obliquely inward to dorsum, outer branch running to before end of fold; larger black spot at end of fold, smaller black spot at lower angle of discal cell; cream fascia obliquely outward from 1/2 of costal margin to dorsum, its irregular inner margin with a small black spot at middle; white streak from distal 1/5 of costal margin obliquely inward to termen, edged with a black stripe on outer margin; fringes yellowish brown, mixed with pink along dorsum. Hindwings deep grey; fringes yellowish brown. Foreleg with coxa white, femur with basal half white, distal half yellow, tibia black; midleg with femur yellowish brown, tibia black, yellow mixed pink at middle, white at apex; hindleg with femur yellowish brown mixed with white scales, tibia with white-tipped whorls of bristles pink basally, black distally; all tarsi with 1–3 tarsomeres yellow, 4–5 tarsomeres white, first tarsomere of fore- and midlegs ringed with white at base and apex, first tarsomere of hindleg ringed with white at apex.
Male abdomen and genitalia (Fig. 12):
Male abdomen. Pleural lobes of eighth segment subquadrate, 4/5 length of valva.
Male genitalia. Socius with right brachium uniformly wide from near base to middle, produced outward and forming a large triangular projection medially, narrowed from distal 1/3 to apex; dorsal process arising from top of triangular projection, short, spine shaped. Left brachium half length of right brachium, narrowed to apex. Valvae clavate, basal half uniformly narrow, distal half broadened to apex, with dense setae ventrally. Left valvella uniformly slender, 3/4 length of phallus; right valvella reduced. Phallus wide at base, slightly narrower distally, apex with an odontoid process.
Female genitalia (Fig. 20). Apophyses posteriores 2.5 times as long as apophyses anteriores. Sterigma elongate cylindrical, heavily sclerotized, nearly 1/4 as long as ductus bursae. Ductus bursae as long as apophyses posteriores, membranous. Corpus bursae elongate elliptical, longer than ductus bursae; entrance at posterior 1/3 of corpus bursae; signum irregularly rectangular, with a row of a few denticles.
Distribution. China (Hainan).
Etymology. The specific epithet of the new species is derived from the Latin apic- and odontus, referring to the odontoid process at the apex of the phallus in the male genitalia.
description: Published as part of Zhang, Di & Li, Houhun, 2023, A taxonomic review of the genus Ashibusa Matsumura, 1931 (Lepidoptera: Cosmopterigidae) from China, pp. 265-281 in Zootaxa 5380 (3) on pages 267-269, DOI: 10.11646/zootaxa.5380.3.4, http://zenodo.org/record/10224515