100 PROCEEDINGS OF THE NATIONAL MUSEUM Vol. 117 



sclerotized edge. Ductus bursae wholly membranous; inception of 

 ductus seminalis at posterior edge of bursa copulatrix. 



Type: Masafuera: La Correspondencia, 1200 m. (Feb. 16, 1955). 



Described from the unique female type. Although generically 

 distinct, exuta bears a strong superficial resemblance to Leuroperna 

 leioptera but the latter is much darker in coloration. 



LeuropernOf new genus 



Type-species: Leuroperna leioptera, new species, by monotypy and 

 present designation. 



Antenna sHghtly more than half the length of forewing, serrate, 

 thickened in male; scape with, pronounced scale-flap. Labial palpus 

 curved, ascending, second segment about two-thirds the length of 

 third, with conspicuous ventroanterior triangular brush ; third segment 

 slender, acute. Head roughened by erect scales on crown; face 

 smooth but bordered laterally by elongate scales. Maxillary palpus 

 well developed, slender, porrect. Hindtibia slender, smooth. Fore- 

 wing with 12 veins, all separate; 2 distant from 3 ; 3 and 4 approximate; 

 6, 7, 8, and 9 about equidistant; 11 from before middle of cell. Hind- 

 wing with 8 veins; 2 remote from 3; 3 and 4 connate; 5 nearer to 6 

 than to 4; 6 and 7 subparallel; hair pencil present at base of wing. 



Male genitalia without uncus or gnathos. Ventrolateral hair 

 pencil present. 



Female genitalia without signum. 



In general appearance Leuroperna is similar to Eudolichura, 

 described herein, and to Plutella Schrank. Leuroperna differs from 

 Eudolichura by the presence of a pronounced scale-flap on scape, 

 porrect maxillary palpus, connate veins 3 and 4 and separate veins 

 5 and 6 of hindwdng. From Plutella the genus Leuroperna can be 

 distinguished by the presence of a well-developed accessory cell in 

 forewing, connate veins 3 and 4 and separate veins 5 and 6 of hindwing. 



Leuroperna leioptera, new species 



Figures 108-111 



Alar expanse 20-22 mm. 



Labial palpus ivory white; second segment shaded with grayish 

 fuscous on outer side; third segment shaded with grayish fuscous 

 anteriorly and on outer side. Antenna with scape fuscous, remainder 

 becoming Ughter to middle then, progressively, 3-4 segments blackish 

 followed by 3 ivory white, 6 blackish, 2 ivory white, 3 blackish, ivory 

 white and terminal 5 grayish fuscous. Head grayish to fuscous; 

 crown ivory white to buff. Thorax buff mth a blackish-fuscous, 

 longitudinal stripe on each side; tegula fuscous mixed with a few 



