252 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 90 



Type locality. — Oak Station, Allegheny County, Pa. 

 Food 'plant. — Unknown (probably lichens) . 

 Distribution. — Known from the type locality only. 



United States records 



Pennsylvania: Oak StatiOD, Allegheny County, 28 5 5 , 4 $ $ (June 4 to 23, 1911, 

 1912, Fred Marloff). 



19. Genus CHAMBERSIA Riley 



Plate 1, Figtjre 4 ; Plate 6, Figuke 46 ; Plate; 12, Figures 79, 79a ; Plate 19, 



FlGtTRB 115 



Chanibersia Riley, in Smith, List of the Lepidoptera of Boreal America, p. 115, 

 1891.— BuscK, in Dyar, U. S. Nat. Mus. Bull. 52, p. 526, 1903.— Keiakfott, in 

 Smith, List of the Lepidoptera of Boreal America, p. 115, 1803. — Barnes and 

 MoDuNNouGH, Check list of the Lepidoptera of Boreal America, p. 162, 

 1917. — Barnes and Busck, Contr. Lepid. North America, vol 4, p. 235, 1920. — 

 Gaede, in Bryk, Lepidopterorum catalogus, pt. 88, p. 49, 1938 (as synonym 

 of Borkhausenia). (Genotype: Blepharocera haydenella Chambers, U. S. 

 Geol. Geogr. Surv. Terr. Bull. 3, p. 145, 1877.) 



Blepharoccrcu Chambers, U. S. Geol. Geogr. Surv. Tefr. Bull. 3, p. 144, 1877 

 (preoccupied). (Genotype: Blrpharocera haydenella Chambers, U. S. Geol. 

 Geogr. Surv. Terr. Bull. 3, p. 145, 1877.) 



Labial palpus long, slender ; second segment roughened in front with 

 appressed scales; third segment shorter than second, acute. Tongue 

 developed. Antenna long, ciliated in male, serrate in female; basal 

 segment with pecten. Thorax smooth. 



Fore wing rather narrow, broadest at apical third ; costa straight, 

 apex bluntly pointed, termen oblique; 12 veins; 2 remote from 3; 3, 

 4, and 5 equidistant ; 7 and 8 stalked, both to costa ; 10 remote from 9 ; 11 

 from well before middle of cell ; internal cell absent. 



Hind wing narrower than fore wing; costa gently arched; apex 

 pointed ; 8 veins ; 2 remote from 3 ; 3 and 4 connate ; 5 strongly curved ; 

 6 and 7 strongly divergent apically. 



Male genitalia. — Clasper absent, Anellus with lateral processes. 

 Vesica unarmed. Gnathos and micus well developed. 



Female genitalia. — Genital plate partly membranous. Ductus 

 bursae membranous. Ductus seminalis from about middle of ductus 

 bursae. Signum present. 



Remarks. — I am resurrecting Chambersia for haydeneUa^ which I 

 am removing from Borkhausenia. This genus differs from Bork- 

 hausenia in having vein 2 of the fore wing remote from 3 ; 10 remote 

 from 9 and the internal cell absent. The hind wing is narrower than 

 the fore wing and veins 3 and 4 are connate. The male genitalia lack 

 a clasper and the signum is present in the female. 



