Coptotriche turpinia Xu & Dai, sp. nov.

http://zoobank.org/NomenclaturalActs/ B7F19F95-1D51-4D54-9FC5-ABAB470C622A

(Figs. 3–5, 7, 19–28, 56–61)

Type material. Holotype: 1 ♂, CHINA, Wuzhifeng, Shangyou County, Ganzhou City, Jiangxi Province, 25.987 N, 114.195 E, elevation 394 m, feeding larvae on Turpinia arguta (Lindl.) Seem. ( Staphyleaceae), adults emerged 30.vi.2014, Jiasheng Xu, genitalia slide no. BX15012 ♂ (GNU) . Paratypes (7 ♂): 6 ♂, same label data as holotype, genitalia slide no. Liu0087001 ♂ (GNU); 1 ♂, VIETNAM, Lao Cai Province, 15 km NW Sa Pa, 22°21’3”N, 103°46’16”E, elevation ca. 1910 m, from feeding larva 21.ii.2015, ex pupa iii.2015, field card no. 5198, A. Diškus, genitalia slide no. AD1056 ♂ (ZIN) .

Diagnosis. Externally, C. turpinia sp. nov. is most similar to C. asiana sp. nov. (described below). From the latter, C. turpinia usually differs in the less distinctive dark marking of the forewing and the paler hindwing; however, some specimens of C. turpinia may be undistinguishable from C. asiana . In the male genitalia, the combination of a short distal process of the vinculum (Figs. 19, 20, 27), sinuous valva (Figs. 19, 20, 24), distinctive posterior excavations of vinculum (Fig. 25), and distinctly short tegumen (Figs. 19, 26) distinguish the new species from the most similar Japanese C. symplocosella Kobayashi & Hirowatari (see Kobayashi et al. 2016) and C. asiana . The host plant Turpinia arguta (Lindl.) Seem. ( Staphyleaceae) also makes this species distinctive because there are no other species feeding on Turpinia Vent.

Male (Figs. 4–6). Forewing length 3.9–4.6 mm, wingspan 8.9–10.0 mm (n = 8). Head: frons, palpi and pecten ochreous cream to glossy whitish cream; frontal tuft comprised of lamellar scales, cream white to ochreous yellow, grey-brown basally; collar glossy, ochreous cream to ochreous yellow, comprised of slender lamellar scales; antenna significantly longer than one half of the length of forewing; flagellum ochre-yellow to ochreous cream, with about 37 segments; sensilla whitish cream, very fine, rather indistinctive. Thorax: ochreous cream to ochreous yellow, distally usually brown; tegula ochreous cream usually with some ochre scales or entirely ochreous yellow. Forewing ochreous cream to ocherous yellow, with some sparsely distributed brown-black or black scales which apically form a rather indistinctive C-shaped streak and small, irregular, rather indistinctive spot on tornus; fringe ochreous grey to ocherous yellow, without fringe line; forewing underside densely speckled with grey-brown or ochre-brown scales, except a large area below the fold. Hindwing pale grey to blackish grey on upper side and underside; fringe ochre glossy, pale grey or ochre-grey to blackish gray. Legs pale ochre to ochre-yellow, usually darkened with black-grey scales on upper side. Abdomen pale ochre to yellowish grey on upper side and underside; genital segments large, pale brown to yellowish cream; anal tuft dorsal, long, pale ochre-yellow to pale brown.

Female. Unknown.

Male genitalia (Figs. 19–28). Capsule 490–550 μm long. Uncus with two long lateral lobes. Socii membranous, distinctive (Figs. 19, 23). Tegumen distinctly short (Fig. 26), with long lateral arms (Figs. 19, 20, 26). Valva 405–500 μm long, wide (Fig. 19) and slightly sinuous (Figs. 19, 24). Transtilla with medium-short sublateral processes (Fig. 23) and a short transverse bar; the latter may be relatively wide (Fig. 23). Vinculum rounded (Fig. 19) or with a very small process anteriorly (Figs. 20, 27). Anellus indistinctive, membranous. Phallus 650–710 μm (occasionally 940 μm) long (Figs. 21, 25), very slender, with a strongly extended tulip-shaped apex and two long lateral bands of spines.

Bionomics (Figs. 56–61). The host plant is Turpinia arguta (Lindl.) Seem. ( Staphyleaceae), an evergreen tree (Figs. 56, 58). Larvae mine leaves from December until early May of the subsequent year ( C. turpinia seems to be hibernating in the larval stage). Morphology (shape and colour) of leaf mines change in the course of their development (Figs. 57–61). There are usually 2–5 mines per leaf (Figs. 58, 59). Mature larva is pale grey, 9.0–10.0 mm long. Pupation in a nidus at the end of the mine. Exit slit on upper side of the leaf, close to the end of the leaf mine.

Distribution. The new species is known from China (Jiangxi Province) and northern Vietnam (Lao Cai Province).

Etymology. The new species is named after the host plant, Turpinia Vent.