NO. 3546 MOTHS OF GENUS EUSCEPTIS — TODD 9 



somere, scales of distal three-fifths of femur dark brown, scales of basal 

 part white, trochanter clothed with longer, less appressed, pale yellow 

 scales; middle leg similar to foreleg except tibia with a broad median 

 ring of loose pale yellow scales, the dark scales at apex long, loose, 

 down curved, forming a broad tuft, white scales at base of femur 

 extending along dorsum to apex, tibial spiu-s dark brown except 

 extreme apex of long, inner spur white; hindleg similar to middle leg 

 except scales of tibia appressed, pale median part white and extending 

 to base along dorsum, basal tibial spurs white except apical half of 

 short outer spiu-. Venation of wings as for genus, accessory cell very 

 small and narrow as in effusa. Wing shape as in effusa (figs. 4-6), 

 male with inner margin of hindwing modified, upcurved over abdomen 

 and bearing a tuft of long hairs in the pocket formed on the ventral 

 surface. Pattern of maculation of upper surface of wings as illus- 

 trated (fig. 6, female), male resembling female except dark marginal 

 band of hindwing less extensive, reaching only slightly beyond Cug. 

 Ground color of basal part of forewing pale yellow; dark part of dark 

 brown scales some iridescent brassy green in certain lights, some pale 

 blue white scales usually present above torn us in cells Cui and Cu2; 

 Y-shaped transverse line of metallic gray scales heavily bordered by 

 dark brown scales. Hindwing yellow orange except dark brown mar- 

 ginal band, fringe dark with some white at outer edge; ventral sm*faces 

 of wings similar to dorsal surfaces except metallic gray Y-shaped 

 transverse line of forewing absent, apical orange spot of hindwing 

 larger and fringe of hindwing mostly white, basal costal band of dorsal 

 surface of forewing absent on ventral surface of that wing in males. 

 Length of forewing: male, 13 to 14 mm.; female, 14 to 15 mm. 



Male genitalia as illustrated (fig. 23), very similar to that of ejffusa 

 (fig. 24) except sacculus of left valve distinctly wider than sacculus 

 of right valve, dorsally directed process of sacculus of left valve ex- 

 tendmg beyond costal margin of valve at a point well below corona, 

 costal spine of sacculus of right valve shorter than distance from its 

 base to apex of sacculus, and costal angle of apex of right sacculus 

 forming a short, triangular projection. Female genitalia very similar 

 to those of ejfusa except right lobe of seventh abdominal sternite 

 weakly sclerotized along median emargination, left lobe of seventh 

 abdominal sternite with a short, blunt projection medially at base of 

 lobe, dorsal sclerotization of vaginal chamber about twice as long as 

 wide. 



Type: Type female, Sixaola River, Costa Rica, April 1907, Wm. 

 Schaus (USNM 64639); 1 female paratype, same place, September; 

 and 1 female paratype, Guapiles, Costa Rica, 850 ft. alt.. May 1907, 

 Wm. Schaus, in the U.S. National Museum, Washington, D.C. Two 

 male paratypes, Sixaola River, Costa Rica, September, in the Carnegie 



