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 .