Illustrated review of the leaf-mining Nepticulidae of the central Andes (Peru and Bolivia) Author Stonis, Jonas R. Author Diškus, Arūnas Author Remeikis, Andrius Author Karsholt, Ole Author Torres, Nixon Cumbicus text Zootaxa 2017 4257 1 1 70 journal article 33173 10.5281/zenodo.556874 90f99d44-c68c-4602-90f1-2802409db73d 1175-5326 556874 98E19676-EC03-4026-B4B6-39BEC10B5A05 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 .