328 WILLIAM T. M. FORBES 



8. PERIMKDK Chambers 

 (Mompha, in part) 



Similar to Laverna; scape rather long, without pcctcn; palpi smooth, with second 

 segment slightly thickened, and third a little longer. Fore wing lanceolate (hardly 

 four times as long as wide, fig. 182), normal, obscurely tufted, with 1st A lost; 

 hind wing half as wide as fore wing, with R and M! and M, and M 3 connate. 



Key- to the species 



1. Antenna white-tipped 1. particornella, 



1. Antenna dark. 



2. Fringe wholly dark 2. erra-nsella. 



2. Fringe below apex white 3. falcata. 



1. P. particornella Busck. Shining lead gray; immaculate; terminal eight or 

 ten segments of antenna white. No other pale scaling. 12-15 mm. 



End of May. 



District of Columbia and vicinity; Texas. 



2. P. erransella Chambers. Dark lead gray (with slight purple iridescence), 

 the tufts very slightly defined with yellow or whitish scales; sometimes with a 

 costal subterminal spot. 



July and August. 



New Hampshire to District of Columbia and Missouri. New York: Ithaca. 



3. P. falcata Braun. Fore wing purplish fuscous, powdered, on a shining grayish 

 white base. Similar to P. erransella and P. particornella, but with a contrasting 

 white patch in fringe below the apex, and with antennae wholly dark. Hind wing 

 mottled with white beneath, ll 1 /^ to 14 mm. 



June and July. 



Cincinnati, Ohio; Pittsburgh, Pennsylvania; New York : Ithaca. 



9. STAGMATOPHORA Herrich-Schreffer 



Similar to Perimede; palpi more slender in our species, with second segment 

 slender and as long as third. Fore wing with M t short-stalked (fig. 189) ; narrow- 

 scaled and green-iridescent, with very obscure, practically obsolete tufts. For 

 8. sexnotella see Laverna. 



Key to the species 



M 2 stalked ( Cholotis ) 2. ceanothiella. 



M 2 free (Stagmatophora) 1. gleditschiteella. 



1. S. gleditschiaeella Chambers. Dark bronzy, with some greenish, iridescence 

 on thorax and fore wing; immaculate, the rudimentary tufts slightly duller. Anal 

 tuft and hair on hind tibia orange in male. 12-15 mm. 



May. Larva boring out thorns of Gleditschia. 

 District of Columbia; Ohio; Kentucky. 



2. S. ceanothiella Cosens. Practically identical, except for the venation, with 

 K. gleditschiceella. Basal joints of antennae long and enlarged at tip (Pyrodei-ces ; 

 Cholotis Meyrick ) . 



End of May. Larva in a gall in a distorted terminal bud of Ceanothus 

 (Ontario) ; also in a slight gall in the stem (Texas). In the former case winter- 

 ing in the gall. Light yellow, with black head and two light brown triangles on 

 neck. 



Vicinity of Toronto, Ontario; Texas. 



