Southern Andean Stigmella sinuosa complex (Lepidoptera, Nepticulidae): unraveling problematic taxonomy with a pictorial key of adults? Author Stonis, Jonas R. Author Remeikis, Andrius text Zootaxa 2016 4136 2 309 322 journal article 10.11646/zootaxa.4136.2.3 8f7f78f0-e64a-4de9-a9b0-8b17145d982a 1175-5326 262026 A8645A57-C7FC-4F05-8ED5-5F0EA42A1276 Documentation of Stigmella species 642 ( Figs 19–22 ) Material examined. 1 Ƌ, ARGENTINA , Neuquen, San Martin de los Andes, elevation ca. 640 m , 17.x.1981 , Nielsen & Karsholt, genitalia slide no. RA642 ( ZMUC ). Diagnosis. From the most resembling S. sinuosa and particularly S. mevia it differs in the combination of characters illustrated in fig. 22. Male ( Fig. 19 ). Forewing length 3.2 mm; wingspan 7.1 mm. Head: palpi brownish cream; frontal tuft unknown, rubbed, only few pale brown piliform scales left; collar brown; scape brownish cream speckled with pale brown lamellar scales; antenna distinctly longer than half the length of forewing; flagellum with 43 segments, greybrown on upper side and underside. Thorax, tegula and forewing densely speckled with grey-brown to dark greybrown scales with weak purple iridescence. Forewing with some silvery shiny (at certain angle also with little golden gloss) scales apically; fringe grey-brown, distally pale grey-brown; underside of forewing grey-brown, without spots. Hindwing and its cilia grey-brown with some purple iridescence on upper side and underside; without androconia. Legs ochre-brown, with some grey-brown scales on upper side. Abdomen fuscous on upper side and underside; anal tufts short, brownish grey; genital plates brown. Female . Unknown. Male genitalia ( Figs 20–22 ). Capsule longer ( 330 mm ) than wide ( 200 mm ). Phallus ( Fig. 21 ) 260 mm long, 116 mm wide; vesica with 7 horn-like cornuti ( Figs 21 , 22 ). Bionomics. Host-plant: unknown. Adults fly in October. Distribution . Known from the western (mountainous) Argentina at elavation about 640 m .