Stigmella thuringiaca, Nepticula nickerli, Stigmella, Nepticula

Male. Wingspan: 4.4-4.6 mm.  Head: frontal tuft pale  ochreous to dark brown; scape and collar yellowish white; antenna slightly  longer than half length of forewing.  Forewing: pale olive brown to grey-brown, without purple tinge; terminal cilia concolorous or slightly paler  than distal part.  Hindwing: pale grey.  Abdomen: grey-brown, with small  pale brown anal tufts. Female.  Wingspan: 4.0-4.4 mm.   Antenna slightly less than or equal  to half forewing length.  Abdomen without anal tuft.  Otherwise similar  to male. Male genitalia. Vinculum with anterior margin variably  emarginate.  Uncus with a pair of triangular lobes at a right to obtuse  angle to each other.  Gnathos with transverse bar of variable length, long  horns and heavy anterior processes.  Valva starts gradually tapering from  about one-third distance from base into arcuate distal process; inner lobe  narrow.  Transtilla with long transverse bar and rather short sublateral  processes.  Aedeagus approximately as long as genital capsule; vesica with  many slender cornuti in two groups of unequal size; many minute pectinations. Female genitalia. Bursa copulatrix half length of abdomen.  Corpus bursae long, anterior half rounded; anterior half completely covered  with pectinations; signum with slightly heavier pectinations on a slightly  sunk medial band over anterior half from ventral to dorsal side.  Accessory  sac small, with distinct reticulate field.  Abdominal tip narrow and pointed; apophyses slender; posteriores distinctly longer than anteriores; both  pairs straight.