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 33170 10.5281/zenodo.557156 8f75cf6f-6fce-41d6-a734-21babf75b7db 1175-5326 557156 98E19676-EC03-4026-B4B6-39BEC10B5A05 The Stigmella expressa group (designated here) (species 6 to 11) Diagnostics ( Fig. 37 ): forewing speckled to almost unicolorous pale (but not very glossy or shiny). In male genitalia, phallus with two horn-like cornuti; valva with two apical processes; uncus with three to four caudal papillae (not with two well-separated caudal lobes); gnathos with two closely juxtaposed caudal processes and usually with a laterally extended plate; vinculum usually with a large ventral plate and lateral lobes. Currently the group comprises of seven similar but still differing Andean species: one from Ecuador ( Stigmella lachemillae Diškus & Stonis ) and six from Peru . Host-plant relationships: at least one species ( S. lachemillae ) feeds on Lachemilla Rydb. , Rosaceae , while larvae of S. acalyphae sp. nov. and S. lepida sp. nov. feed on Acalypha L., Euphorbiaceae .