Stigmella latilobata Diskus & Navickaite 2020, sp. nov.
Creators: name: Stonis, Jonas R.
name: Remeikis, Andrius
name: Diškus, Arūnas
name: Navickaitė, Asta
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nepticulidae
Stigmella
Stigmella latilobata

description: Stigmella latilobata Diškus & Navickaitė, sp. nov.
(Figs 14, 38, 130–132)
urn:lsid:zoobank.org:act: A46A65DB-9FD5-4DDB-8549-B27679C6DD8F
Type material. Holotype: ♂, India, Uttarakhand, Tehri Garhwal Distr., Chamba, 30°24’28”N, 78°17’24”E, eleva-tion ca. 2600 m, 23.viii.2010, A. Diškus and A. Navickaitė, genitalia slide no. AD484 (ZIN).
Diagnosis. S. latilobata sp. nov. belongs to the Stigmella ruficapitella (sensu lato) or S. hemargyrella (sensu stricto) group. In the male genitalia, this new species differs from other representatives of the group in the combina-tion of a long vinculum (Fig. 130) and a unique set of cornuti (Fig. 132).
Male (Fig. 38). Forewing length 2.0 mm; wingspan 4.5 mm (n = 1).
Head. Palpi yellowish cream; frontal tuft bright ochreous orange; collar yellowish cream; scape glossy, yellowish cream; antenna one half the length of forewing; flagellum blackish brown with some purple iridescence on upper side and underside.
Thorax. Tegula, thorax and forewing dark coppery brown, with some golden gloss and purple iridescence; fascia postmedian, wide, golden shiny; fringe brown; forewing underside dark brown, without spots or androconia. Hindwing brown on upper side and underside, without androconia; fringe brown. Legs glossy, yellowish cream, covered with dark grey-brown scales with purple iridescence on upper side.
Genitalia (Figs 130–132) with capsule 170 µm long, 105 µm wide. Uncus with two well-separated lateral lobes (Figs 130, 131). Gnathos U-shaped, with weakly chitinized caudal processes (Fig. 131). Valva (Fig. 130) about 80 µm long, with a straight inner lobe and slender apical process. Transtilla with large, distally splitted sublateral pro-cesses (Fig. 131). Vinculum very large, one half the length of capsule or little longer, with very shallow excavation anteriorly (Fig. 130). Phallus (Fig. 132) about 125 µm long, without carinae; vesica with a large, basally curved cluster of spine-like cornuti and a group of three–four very large cornuti apically.
Female. Unknown.
Bionomics (Fig. 14). Host plant is unknown (unidentified). Larva is pale green, with a green intestine and pale brown head (Fig. 14). Larvae mine in leaves in August. The leaf mine is a slender sinuous or contorted gallery; in the initial part, black to brown-black frass fills the width of the gallery; further on, brown-black to brown frass is deposited in a wide central line (Fig. 14). Adults fly in late August.
Distribution. Known from two localities in the western Himalaya (Uttarakhand: Chamba and Mussoorie), at the elevation of about 2500–2600 m (Fig. 1: wHi).
Etymology. The species name is derived from Latin latus (wide) combined with Latin lobatus (lobed), in reference to the large ventral lobe of the vinculum in the male genitalia.
description: Published as part of Stonis, Jonas R., Remeikis, Andrius, Diškus, Arūnas & Navickaitė, Asta, 2020, Documenting new and little known leaf-mining Nepticulidae from middle and southwestern areas of the Asian continent, pp. 401-452 in Zootaxa 4881 (3) on page 418, DOI: 10.11646/zootaxa.4881.3.1, http://zenodo.org/record/4283789