66 



William T. M. Forbes 



1. E. auricyanea Walsingham. Head and thorax with long, gray hair, with 

 slight iridescence. Fore wing golden with scattered, small, purple spots, each of 

 several scales, the spots denser toward base and inner margin. Larger blotches 

 along margin toward apex, and at anal angle, and a streak running up from 

 inner margin near base. 12 mm. 



Moth in March and April. Larva in a large blotch mine on oak, chestnut, and 

 chinquapin, in April and May; extremely local, sometimes confined to a single tree. 

 District of Columbia. New York: Karner. 



2. E. griseocapitella Walsingham. Similar to the preceding species but without 

 any purple blotches, the spots being all small and rounded; perhaps not distinct. 

 Described from the District of Columbia. 



Family 3. HEPIALIDAE 



(Swifts) 



Head loosely hairy over whole upper surface, concealing the rudi- 

 mentary ocelli when they are present ; mouth parts rudimentary, mandi- 

 bles and maxillae recognizable under the microscope, basal joint of 

 labium present, bearing the small, hairy palpi; antennae, in our species, 

 about as long as width of thorax, somewhat moniliform, pedicel large 



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Figs. 40-42. hepialidje 



40, Hepialus sylvinus (Europe), venation; 41, same, detail of base of fore wing; 

 42, Sthenopis humuli (Europe), seta map (after Fracker) 



and scaled, but flagellum scaled at base only. Legs weak, without 

 spurs; the hind legs of many species with a large tuft of hair in the 

 male. Fore wings (fig. 40) with humeral vein, with Sc more or less 

 distinctly forked but little beyond its middle, R x simple, R 2 and R 3 

 stalked, the apex below R 3 ; base of M fully preserved, forming a large 

 intercalated cell. Oblique anal cross vein • present, as in the Microp- 

 terygidas (fig. 41), but anal system more or less reduced, often with 

 only 2d A fully developed. Jugum slender, with a long, free tip ; 

 underlying hind wing in flying position. Hind wing with practically 

 identical venation, but anal region more reduced, with simple veins. 

 Thorax very loosely organized, leaving a distinct space between the 



