Stigmella tristis

Male. Wingspan: 4-5 mm.  Head: frontal tuft dark grey-  brown to almost black; collar and scape yellowish white to pale grey;  antenna slightly longer than half length of forewing.  Thorax dark bronzy-  brown.  Forewing: yellowish or greyish bronze with faint metallic lustre;  extreme base concolorous with thorax; terminal cilia grey-brown.  Hindwing  and cilia grey.  Abdomen: fuscous with grey-brown anal tufts. 
Female. Wingspan: 4-5 mm.  Frontal tuft ferruginous to  dark brown; antennae half length of forewing.  Hindwings and cilia pale  grey. Male genitalia.  Vinculum with anterior emargination  varying from shallow to deep.  Uncus with two long, triangular projections.  Gnathos with relatively short horizontal bar and long horns.  Valva  divided into extremely large, rounded inner lobe and thin, curved distal  process.  Transtilla with long transverse bar and short sublateral  processes.  Aedeagus as long as genital capsule with numerous spines and  cornuti of varying sizes, the longest near base.  Manica large, densely  covered with minute spines. 
Female genitalia. Vestibulum long and wide, partly with  strong sclerotizations.  Corpus bursae reduced.  Accessory sac small and  asymmetrical with spined sclerotizations and a band of spines extending  into vestibulum.  Ductus spermathecae anteriorly and posteriorly 2 to 3  times convoluted.  Apophyses anteriores with broad posterior part and  slender anterior process; posteriores of approximately the same length  and straight.