4. Stigmella schoorli Puplesis & Robinson, 2000

(Figs 1, 5, 32, 37)

Stigmella schoorli Puplesis & Robinson, 2000: 29 –30.

Stigmella schoorli Puplesis & Robinson; in Stonis et al. 2016d: 46, figs 18, 28, 118–122.

Material examined. 1 ♂ (holotype), PERU, Dept. Ancash, 35 km SE of Huaraz, Cerro Cahuish, Quabrada Pucavado, 9°40'19"S, 77°12'21"W, elevation 3870 m, 18.ii.1987, O. Karsholt, genitalia slide no. Diškus 200 (ZMUC) ; 3 ♂, 5 ♀ (paratypes), label data as holotype, genitalia slide nos Diškus201, Diškus202, Diškus203, Diškus204, Diškus206 (ZMUC); 1 ♂ (not type series), same label data as holotype, genitalia slide no. RA554♂ (ZMUC).

Diagnosis. Belongs to the Stigmella schoorli group. The combination of an almost uniform forewing without a median fascia, pointed inner lobe of valva, and rather asymmetrical horn-like cornuti (rate: 1:1.4; the longer cornutus 1.6 times exceeds the width of phallus) distinguishes S. schoorli from S. epicosma, S. alticosma, and S. paracosma). From similarly uniformly scaled S. hamata, S. schoorli may be easily distinguished by the distinctly bilobed uncus, one apical process of valva, long sublateral lobes of transtilla, and very large horn-like cornuti.

Male (Fig. 32). Described in Puplesis & Robinson 2000: 29, 30, and Stonis et al. 2016d: 46, figs 118, 119. Wingspan: 5.8–6.0 mm.

Female. Similar to male.

Male genitalia. Illustrated in Stonis et al. 2016d: figs 121, 122.

Female genitalia. Illustrated in Puplesis & Robinson 2000: figs 213, 214.

Bionomics. Adults fly in February. Otherwise biology unknown.

Distribution (Fig. 1). This species occurs in the high Peruvian Andes (Peru: Ancash Departamento) at altitudes about 3870 m (Fig. 5).