Stigmella robusta Remeikis & Stonis, 2016

Stonis, Jonas R., Diškus, Arūnas, Remeikis, Andrius, Karsholt, Ole & Torres, Nixon Cumbicus, 2017, Illustrated review of the leaf-mining Nepticulidae of the central Andes (Peru and Bolivia), Zootaxa 4257 (1), pp. 1-70 : 23

8. Stigmella robusta Remeikis & Stonis, 2016

( Figs 1 , 35 , 37 )

Stigmella robusta Remeikis & Stonis ; in Stonis et al. 2016d: 41 , figs 18, 27, 103–107.

Material examined. 4 ♂ (holotype and paratypes), 3 ♀ (paratypes), PERU, Dept. Ancash, 35 km SE Huaraz, Cerro Cahuish, Quabrada Pucavado , 9°40'50"S, 77°13'32"W, elevation about 4100 m, 15–18.ii.1987, O. Karsholt, genitalia slide nos RA 566♂ (holotype), RA 575♂, RA 576♂, RA 580♀ (paratypes) ( ZMUC) .

Diagnosis. Belongs to the S. expressa group. The combination of gnathos with closely juxtaposed processes, angular inner lobe of valva, large, distally four-lobed uncus, set of 2–3 large cornuti and cluster of small spine-like cornuti, and pale, speckled forewing distinguishes S. robusta sp. nov. from all other Stigmella species, including the members of S. expressa group.

Male ( Fig. 35 ). Described in Stonis et al. 2016d: 41, fig. 103. Forewing length 3.5–4.5 mm; wingspan 7.6–9.6 mm.

Female. Similar to male.

Male genitalia. Illustrated in Stonis et al. 2016d: figs 104–106.

Female genitalia. Illustrated in Stonis et al. 2016d: fig. 107.

Bionomics Adults fly in February. Otherwise biology unknown.

Distribution ( Fig. 1 ). This species occurs high in the Peruvian Andes ( Peru: Ancash Departamento) at altitudes about 4100 m.

Figures

FIGURE 35. Adults of the central Andean Nepticulidae.

FIGURE 37. Diagnostics of the central Andean Stigmella.

FIGURES 1 – 8. Distribution of the central Andean Nepticulidae. 1, high-Andean species recorded at altitudes above 3700 m (after Stonis et al. 2016 d); 2, species recorded at altitudes below 3700 m; 3 – 8, some collecting areas in the Peruvian Andes.