614 WILLIAM T. M. FORBES 



inner margin; base dusted with white; postmedial line diffuse, nearly parallel to 

 outer margin, distinct; discal dots of the ground color, large, defined by white 

 dusting. Hind wing like that of M. obnupsella. 20 mm. 



Xew York to Florida, Wisconsin, and Colorado. 



5. M. alatella Hulst of California has been reported from New Jersey, probably 

 in error for some species of Homceosoma. It is powdery gray, with dentate ante- 

 medial and zigzag postmedial lines; oxiter part of cell whitish, with a dark shade 

 below it. 



(5. M. ceratoniae Zeller is injurious to dried figs and other stored food, in the 

 Old World, and is to be expected in our territory. It is gray, with the usual pale 

 lines, shaded with blackish; the inner line straight except for a large inward angle 

 on A. 22 mm. 



The last two species have more pointed wings than the typical group. 



Rhodophaea exulella Zeller approaches our area on the south. It is near Aero- 

 basis, but without the modified male antennae. It is gray with crimson base; 

 black discal dots; antemedial line pale and far out; and postmedial line heavily 

 edged on both sides with fuscous. 



75. ACROBASIS Zeller 

 (With Mineola Hulst) 



Male antenna; with scape enlarged, with a pointed process or angle on inner 

 side (fig. 389), sometimes produced as a short spur; shaft pubescent in male, 

 sometimes sinuous at base, and slightly thickened with scales, often normal. Fore 

 wing normal in venation, often with a heavy raised scale-ridge a short distance 

 before the antemedial line, the space between it and the antemedial line often 

 tinted with red. Hind wing (fig. 378) with discocellular vein of type (2), meeting 

 the lower side of the cell at a sharp angle, but not always opposite the origin of 

 CUj. . Under side in many species with patches of black sex-scaling in the male. 

 Palpi as in Myelois. 



Acrobasis is a very difficult genus to work with. Several .of the species are 

 misidentified more often than not, and some may not be correctly placed in the 

 analysis below. 



Key to the species 



1. Fore wing with a transverse antemedial scale ridge. 

 2. Fore wing of male, beneath, with a small black dash at base of costa 



(above Sc), or a larger streak not reaching the base. 

 3. Hind wing with black sex-scaling beneath. 

 4. Hind wing with two black streaks (on R and Cu, sometimes partly 



confluent) . 

 5. Patch on R extending irom base to beyond middle of wing, the 



outer half rather thicker 1. angusella. 



5. Patch on R not connected to base, or with the basal half represented 



by a very fine line ; streak on Cu heavier 2. demotella. 



4. Hind wing with the streak on R only. 



5. Fore wing with a streak on R from base to middle.... 3. minimella. 

 5. Fore wing with a short bar at base only. 



6. Black streak on hind wing from base to beyond middle . . 4. eliella. 

 6. Hind wing with an oval spot at middle of costa. 



7. Outer part of wing dark blue-gray 6. stigmella. 



7. Outer part of wing pale pinkish gray, contrasting with base. 



5. aurorella. 



