Stigmella concreta Remeikis & Stonis, 2014

Stonis, Jonas R., Remeikis, Andrius & Davis, Donald R., 2014, Ten new species from the Patagonian Andes (Argentina and Chile), mostly belonging to a newly designated Stigmella purpurimaculae group (Lepidoptera: Nepticulidae), Zootaxa 3887 (3), pp. 321-353 : 328

publication ID	https://doi.org/ 10.11646/zootaxa.3887.3.3
publication LSID	lsid:zoobank.org:pub:25338EEF-328B-442A-A44C-7C412D16DDAA
DOI	https://doi.org/10.5281/zenodo.4952680
persistent identifier	https://treatment.plazi.org/id/E78412DA-C64D-424B-BCA5-7C190E0CEE06
taxon LSID	lsid:zoobank.org:act:E78412DA-C64D-424B-BCA5-7C190E0CEE06
treatment provided by	Felipe
scientific name	Stigmella concreta Remeikis & Stonis
status	sp. nov.

Treatment

5. Stigmella concreta Remeikis & Stonis View in CoL , sp. nov.

( Figs 6 View FIGURES 3–6 , 21, 22 View FIGURES 15–22 , 60–64 View FIGURES 60–64 )

Diagnosis. Externally, its most similar to S. pseudoconcreta and the uniform specimens of S. cana . From S. cana it differs in the large lobes of the massive transtilla, the presence of anterior processes of the gnathos, and in the rodloke chitization of phallus; from S. pseudoconcreta in the large lobes of massive transtilla, the broad rounded lobes of the vinculum, the rod-like chitization of the phallus, and in the dark brown tuft on the head.

Male ( Fig. 21, 22 View FIGURES 15–22 ). Forewing length 1.8–1.9 mm; wingspan 4.0–4.3 mm. Head: palpi grey to greyish white; frontal tuft dark greyish brown; collar and scape whitish; antenna half length of forewing or longer; flagellum with 28–31 segments, dark greyish brown on upper side and underside. Thorax: tegulae and forewing uniform, dark grey with golden gloss, without pattern and apical purple or brown spot; terminal and tornal cilia dark grey; underside of forewing brownish grey or grey, at certain angle of view with fuscous darkening along basal third of costal margin, with no androconia. Hindwings and its cilia grey to dark grey, with no androconia. Legs shiny, brownish grey to dark grey on upper side and underside. Abdomen shiny, dark grey on upper side, grey to dark grey on underside; anal tufts short, brown-cream; anal plates grey to greyish cream.

Female. Unknown.

Male genitalia ( Figs 6 View FIGURES 3–6 , 60–64 View FIGURES 60–64 ). Capsule longer (305–325 µm) than wide (175–190 µm). Vinculum with two large and broadly rounded lateral (anterior) lobes; ventral plate of viculum longer than usually in the species group, but deeply exhavated medially. Uncus with slender caudal lobes ( Figs 61, 62 View FIGURES 60–64 ). Gnathos with two narrow caudal and two anterior processes ( Figs 60, 61 View FIGURES 60–64 ), central plate of gnathos in the form of a very short, narrow, transverse bar. Valva ( Figs 60, 61 View FIGURES 60–64 ) 130–145 µm long, 65–70 µm broad, with large chitinized and slightly curved apical process; inner lobe broadly rounded; transtilla with massive transverse bar and very broad, rounded (lobe-like), sublateral processes. Phallus ( Figs 6 View FIGURES 3–6 , 63, 64 View FIGURES 60–64 ) 140–150 µm long, 105–110 µm broad; chitinization of phallus tube is partially reduced in distal 1/2–1/3, except for a rod-like plate on the right side; vesica with numerous small dentate ( Fig. 6 View FIGURES 3–6 ) and some small, spine-like cornuti (the latter comprise only a majority, about 75–85%). Manica absent.

Bionomics. Adults collected in late September. Otherwise unknown.

Distribution. This species occurs in the southern Andes ( Argentina) at an altitude ca. 640 m (see Material).

Type material. Holotype: ♂, ARGENTINA: Neuquén, S. M. de los Andes , elevation ca. 640 m, 28.ix.1981, Nielsen & Karsholt, genitalia slide no. RA 498♂ ( ZMUC).

Paratypes: 2 ♂, same label data as holotype, genitalia slide nos. RA 408♂, RA 416♂ ( ZMUC) .

Etymology. The species name is derived from the Latin concretus (thick, componded) in reference to the massive transtilla with very large, lobe-like sublateral processes in the male genitalia.