Lepidoptera of New York and Neighboring States 309 



region reduced, with more or less traceable veins. Fringe two-thirds 

 to one and a half times as wide as membrane. Hind tibiae with long 

 hair; tarsi normal, with weak spimiles. Female ovipositor slender, 

 usually exserted. 



Larvae known only in the Blastobasinae ; prolegs short, with a com- 

 plete series of uniordinal hooks; otherwise like the CEcophoridae, and 

 not distinguished in any way from those of Endrosis ; tubercles i and ii 

 distant, iii of eighth segment of abdomen above and behind spiracle; 

 ocelli reduced. Pupa of Gelechioid type ; not studied. 



A small family, derived from the scavenger group of the CEcophoridae, 

 from which they differ only in the fusion of Sc and R of the hind wing, 

 the rather heavier pecten, the closer grouping of the veins at the end 

 of the cell of the fore wing, and the stigma. Endrosis is sometimes 

 also included here, but is CEcophorid in the characters named. 



The species are all obscure and very imperfectly known; the few 

 known larvae are borers in nuts (often scavengers after other borers), 

 scavengers, and predaceous on scale-insects. 



Key to the genera 



1. Palpus not reaching beyond middle of front, often rudimentary; hind wing 

 with 7 veins, M s completely fused with Cu^ ( Pigritiinae ) . 



2. Fore wing with R 3 stalked with R 4+5 9. Pseudopigritia. 



2. Fore wing with R 3 free. 



3. Fore wing with M 2 and M 3 stalked (fig. 177). 



4. Palpi minute in both sexes 7. Pigritia. 



4. Palpi in male upturned to middle of front with a linear sensory area, 



concealed in a groove in the front in life 6. Ploiophora. 



3. Fore wing with M 2 and M 3 not stalked; palpi minute in both sexes. 



8. Dryoperia. 

 1. Palpus upturned beyond vertex; male often with a notched antenna 

 ( Blast obasinae). 

 2. Hind wings with seven veins; M 3 and Cu\ fused (fig. 176) . . .5. Blastolasis. 

 2. Hind wing with all veins (fig. 175). 



3. M 2 , M 3 , Cu„ and Cu 2 all distinctly separate 1. Euresia. 



3. M, and M 3 stalked; CUj free 2. Valentinia. 



3. M 3 and Cu t stalked; M 2 out of the base of the stalk or free. 



4. Antenna with eye-cap 4. Calosima. 



4. Antenna with pecten 3. Holcocera. 



1. EURESIA Dietz 



Male antennae deeply notched, not heavily ciliate. Fore wing with all veins 

 present, all but R 4 and R B free ; hind wing much narrower, all veins free and widely 

 separate, lower discocellular vein nearly longitudinal and long, as well as m-cu. 



1. E. pulchella Dietz. Fore wing light ochreous, trisected by two vertical whitish 

 shades, the first broader and the second followed by a strong dark shade. 8% mm. 



June. 



District of Columbia. 



