146 



UNITED STATES NATIONAL MUSEUM BULLETIN 207 



powdering of white on costal half of median area and, 

 narrowly, along terminal margin; the transverse Hnes 

 powdery, grayish white, obscm-e on some specimens; 

 antemedial Hne obhque, expanded slightly towards costa, 

 without distinct inner dark border and with but faint 

 indication of a blackish brown outer bordering shade 

 towards costa; subterminal hne more or less obscured, on 

 weU-marked examples preceded by a thin blackish line 

 and followed by a broad band of the darkest prevailing 

 ground color; discal dots black, well separated; a row of 

 small black dots along termen, tending to fuse and on a 

 few specimens forming a fine black line. Hind wing a 

 uniform very dark satiny brown; the cilia paler, shading 

 from pale brown to white at their tips. Alar expanse, 

 22-26 nam. 



Male genitalia ha\dng harpe with an erect clasper 

 armed along its outer margin with a row of stout spines 

 (in the figure this looks like an enlargement of the base 

 of costa, but it arises below costa and the base of the 

 costa itseK is simple). Anellus bearing two pairs of 

 combUke, heavy spines, one pair ventral, one dorsal, the 

 latter situated behind the former. Aedeagus slender; 

 its anterior end abruptly expanded and the anterior 

 margin straight; apical fourth bifid, the divided elements 

 terminating in laterally curved horns. A single pair 

 of simple hair tufts on eighth abdominal segment of 

 male. 



Female genitalia with bursa membranous; ductus 

 bursae partially flattened, sclerotized throughout, the 

 sclerotization expanding abruptly into a wide funnel at 

 genital opening. 



Type localities: "Washington Territory" Qiypo- 

 chaldella, in Paris Mus.) ; Mount Tzouhalem, southern 

 Vancouver Isl., British Columbia {blackmorella, in 

 USNM). 



Food plant: Unknown. 



Disteibution: United States: Washington, Friday 

 Harbor (Jime, July). Canada: British Columbia (south- 

 em Vancouver Isl.), Cowichan District (June), Dimcans 

 (June), Mount Malahat (June), Moimt Tzouhalem 

 (June). 



The species is easily identified by its peculiarly armed 

 anellus. In ground color of forewing it and the species 

 following (hanhamella) are intermediate between typical 

 gray- and brown-winged members of the two Pyla 

 species groups. However, except for a very faint trace 

 of it in hanhamella, they both lack the bronzy luster on 

 forewing so characteristic of the typical brown group. 



297. Pyla hanhamella Dyar 

 FiGUBBs 371, 860 



Pyla hanhamella Dyar, Proc. Ent. Soc. Washington, vol. 6, p. 109, 

 1904.— McDunnough, Check list, No. 6239, 1939. 



Maxillary palpus of male subsquamous (a short brush 

 of hairs mixed with flattened scales) . 



Forewing color and markings as in Kypochaldella 

 except for traces of a metallic sheen at base. Hind 

 wing pale brown; ciha white with a fine dark subbasal 

 line. Alar expanse, 20-24 mm. 



Male genitalia having clasper of harpe a moderately 

 long, erect spike; costa at base simple (not produced). 

 Aedeagus slightly bent towards middle; shortly bifid at 

 apex, the divided elements coarsely scobinate. A single 

 pair of simple hair tufts on eighth abdominal segment. 



Female genitalia with the lobe of bursa giving off the 

 ductus seminaUs partially sclerotized, otherwise mem- 

 branous; ductus bursae flattened, sclerotized through- 

 out, concavely bent at middle, the sclerotization termi- 

 nating in a sinuate, thickened, narrow, hplike band 

 along the lower margin of the genital opening. 



Type locality: Winnipeg, Manitoba (type in 

 USNM). 



Food plant: Unknown. 



Distribution: Manitoba, Aweme (Jime, July), Win- 

 nipeg (June). 



Genus Pyla, Species 298-306: P. sdntillans to 

 P. viridisuffusella 



[Ground color of forewing bronzy brown.] 



298. Pyla scintUlans (Grote) 

 FiGXJBBS 29, 372, 373, 857 



Nephopteryx sdntillans Grote, Papilio, vol. 1, p. 18, 1881. 



Pyla sdntillans (Grote), New check list of North American 

 moths, p. 56, 1882. — Hulst, Phycitidae of N. Amer., p. 161, 

 1890. — Ragonot, Monograph, pt. 1, p. 482, 1893. — McDun- 

 nough, Check list, No. 6235, 1939. 



Pyla feella Dyar, Ins. Insc. Menstr., vol. 9, p. 68, 1921. — Mc- 

 Dunnough, Check list, No. 6247, 1939. (New synonymy.) 



MaxiUary palpus of male subsquamous (the scales 

 short, flattened, forming a small expanded brush). 



Forewing dark bronzy brown; the scaling shiny, 

 metallic; transverse lines absent, indicated only on well 

 marked specimens by very faint, moderately broad, 

 blackish brown bands (vestiges of their dark borders) ; 

 discal and terminal dots obsolete. Alar expanse, 

 20-26 mm. 



Male genitalia having harpe with strong clasper, 

 developed as a stout outwardly ciu-ved hook with an 

 extended, elongate, bladelike base, the latter more or 

 less sen-ate. Considerable individual variation is shown 

 in the clasper and the shape of its base. In one example, 

 from Inyo County (presximably a variety of sdntillans 

 but possibly a distinct species), the clasper hook is 

 markedly longer than in the examples figured, and the 

 bladelike base narrower. Costa of harpe produced at 

 base into a pointed, stout, very coarsely spined projec- 

 tion. Aedeagus bifid for less than half its length; one 

 of the divided elements with a short, thornhke spine 

 projecting from lateral margin before apex; the other 

 with 2 or 3 similar spines from lateral margin near apex 

 (usually 3, rarely 2, a single specimen from El Dorado 

 County, exhibiting only one) . A single pair of ventro- 

 lateral abdominal hair tufts on eighth segment. 



Female genitalia with bursa small, membranous 

 throughout; ductus bursae very short, expanded abruptly 

 into a sclerotized cup, its lower surface developed as a 

 pair of flattened, pointed, elongate-oval blades which 

 pro j ect beyond genital opening. Only trifling individual 



