Stigmella latilobata Diškus & Navickaitė, 2020

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, Zootaxa 4881 (3), pp. 401-452 : 418

publication ID	https://doi.org/ 10.11646/zootaxa.4881.3.1
publication LSID	lsid:zoobank.org:pub:7AAE442F-779B-40C6-ABD9-04BCB3B4777B
DOI	https://doi.org/10.5281/zenodo.4333311
persistent identifier	https://treatment.plazi.org/id/A46A65DB-9FD5-4DDB-8549-B27679C6DD8F
taxon LSID	lsid:zoobank.org:act:A46A65DB-9FD5-4DDB-8549-B27679C6DD8F
treatment provided by	Plazi
scientific name	Stigmella latilobata Diškus & Navickaitė
status	sp. nov.

Treatment

Stigmella latilobata Diškus & Navickaitė , sp. nov.

( Figs 14 View FIGURES 7–15 , 38 View FIGURES 29–38 , 130–132 View FIGURES 130–136 )

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). GoogleMaps

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 View FIGURES 130–136 ) and a unique set of cornuti ( Fig. 132 View FIGURES 130–136 ).

Male ( Fig. 38 View FIGURES 29–38 ). 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 View FIGURES 130–136 ) with capsule 170 µm long, 105 µm wide. Uncus with two well-separated lateral lobes ( Figs 130, 131 View FIGURES 130–136 ). Gnathos U-shaped, with weakly chitinized caudal processes ( Fig. 131 View FIGURES 130–136 ). Valva ( Fig. 130 View FIGURES 130–136 ) about 80 µm long, with a straight inner lobe and slender apical process. Transtilla with large, distally splitted sublateral pro-cesses ( Fig. 131 View FIGURES 130–136 ). Vinculum very large, one half the length of capsule or little longer, with very shallow excavation anteriorly ( Fig. 130 View FIGURES 130–136 ). Phallus ( Fig. 132 View FIGURES 130–136 ) 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 View FIGURES 7–15 ). Host plant is unknown (unidentified). Larva is pale green, with a green intestine and pale brown head ( Fig. 14 View FIGURES 7–15 ). 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 View FIGURES 7–15 ). 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 View FIGURES 1–6 : 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.