144 



tnsriTED STATES NATIONAL MUSEUM BULLETIN 207 



292. Pyla insinuatrix, new species 

 Figures 365, 856 



Maxillary palpus of male in the form of an aigrette. 



Forewing paler than in the preceding species, due to 

 stronger white dusting, giving the paler areas a faint 

 bluish tint; transverse lines and dark markings more 

 strongly contrasted; the white antemedial line especially 

 well marked on its lower half, its inner black border 

 below cell expanded into a moderately wider blackish 

 band or patch; blackish inner and outer borders of sub- 

 terminal hne well marked, especially the former; discal 

 dots conspicuous, tending to coalesce. Hind wing 

 subpellucid smoky white, darkening towards apex and 

 termen; the veins very faintly darkened and a narrow 

 dark line along termen. Alar expanse, 24-26 mm. 



Male genitalia with uncus hoodlike, constricted to- 

 wards base. Harpe with a strong, outwardly produced, 

 spined, knob from base of costa; no appreciable clasper. 

 Aedeagus slender, with a very shght bifiu-cation at 

 apex; the bifurcate projections straight. Two pairs of 

 ventrolateral tufts on eighth abdominal segment; some 

 of the hairs broadly expanded at their apices (as in 

 aenigmatica, fig. 367c). 



Female genitalia with bursa copulatrix membranous 

 except for a very faint sclerotization of the lobe giving 

 oflF the ductus seminalis; ductus bursae flattened, 

 weakly sclerotized, expanding at genital opening into 

 sclerotized, scobinate ventrolateral lobes. 



Type locality: Aweme, Manitoba, Canada (type in 

 Canadian Nat. Coll.; paratypes in USNM, 61352). 



Food plant: Unknown. 



Described from male type and four male and two 

 female paratypes from the type locality, collected by 

 Norman Criddle July 13 and Aug. 10, 1925; Aug. 10, 

 1921; Aug. 10, 1925; Aug. 19, 1915). 



293. Pyla aenigmatica, new species 

 Figures 367, 853 



Maxillary palpus of male in the form of a semiaigrette 

 (the hairs short). 



Forewing as on insinuatrix except darker, the ground 

 color Hke that of impostor; the transverse lines distinct; 

 lower half of antemedial line bordered inwardly by a 

 subquadrate blackish patch, costal half of the outer 

 dark border rather broad and well contrasted, blackish; 

 the dark borders of subterminal line well contrasted 

 towards costa; discal dots confluent; dots along termen 

 minute, weak. Alar expanse, 25-28 mm. 



Male genitalia with tegumen having two, strongly 

 spined, protruding lobes on each ventrolateral margin. 

 Harpe mth base of costa enlarged and coarsely scobi- 

 nate; clasper smaU, semicircular, erect. Aedeagus 

 slender; shortly bifurcate; bifurcate elements at apex 

 spinehke, bent sharply at right angles to the aedeagus. 

 Anellus a semitubular shield with rather long, strongly 

 sclerotized lateral arms. Eighth abdominal segment 

 with two pairs of ventrolateral hair tufts; one pair with 

 the hairs expanded at their apices (forming knobhke 

 clusters). 



Female genitalia with bursa membranous. Ductus 

 bursae short, strongly sclerotized along lateral margins, 

 the sclerotizations expanding laterally and at right 

 angles at genital opening into a pair of convolute, finely 

 scobinate lobes. 



Type locality: Wellington, British Columbia (type 

 in USNM, 61353; paratype in Canadian Nat. Coll.). 



Food plant: Unknown. 



Described from male type and one male paratype 

 from the type locaUty, "21-VI-04," G. W. Taylor, and 

 paratypes from the following localities: Goldstream, 

 British Columbia, "30-VIII-20" (9); Salmon Arm, 

 British Columbia, "22-6-20, W. R. B." (cf); Pine 

 Grove, Colo., July 8, 1901, H. G. Dyar, "17310" (cf); 

 East River, Conn., Aug. 21 and Sept. 3, 1908, C. R. 

 Ely (cf and 9 ); Oak Station, Pa., Aug. 20, 1911, Fred 

 Marloff (cf); Watchung Mts., N. J., "6^-99," W. D. 

 Kearfott (cf). 



The hind wings are a trifle darker on the eastern 

 examples, which were, in our collection, identified as 

 Jusca. 



The species is evidently closely related to insinuatrix, 

 but is distinct and easily distinguished by its genitalia. 



294. Pyla criddlella Dyar 

 Figure 368 



Pyla criddlella Dyar, Journ. New York Ent. Soc, vol. 15, p. 110, 

 1907.— McDunnough, Check list. No. 6241. 



Maxillary palpus of male squamous. 



Forewing blackish gray, semilustrous, unicolorous 

 except for a shght darkening of the ground color border- 

 ing the transverse lines; the latter very faint, but slightly 

 lighter than the groimd color; discal and terminal dots 

 obscured. Hind wing brownish gray. Alar expanse, 

 18 mm. 



Male genitalia with harpe simple except for a greatly 

 reduced, upcurving, triangulate clasper. Aedeagus 

 deeply bifurcate; the right divided element (in ventral 

 view) produced into a sharp abruptly curved hook. A 

 single pair of ventrolateral hair tufts on eighth abdom- 

 inal segment. 



Type locality: Aweme, Manitoba, Canada (June ; 

 type in USNM). 



Food Plant: Unknown. 



Known only from the male type. 



295. Pyla fusca (Haworth), new combination 

 Figures 369, 852 



Phycis fusca Haworth, Lepidoptera Brittaniea, pt. 3, p. 493, 1828. 



Phycita fusca (Haworth) Stephens, Illustrations of British ento- 

 mology, Haustellata, vol. 4, p. 310, 1834. 



Pempelia fusca (Haworth) Stainton, Manual of British butterflies 

 and moths, vol. 2, p. 176, 1859. — Packard, Ann. Lyo. Nat. 

 Hist. New York, vol. 10, p. 271, 1873. 



Nephopteryx moestella Walker, List, vol. 27, p. 53, 1863. 



Eudorea (?) frigidella Packard, Proo. Boston Soc. Nat, Hist., 

 vol. 11, p. 53, 1866. 



Salehria fusca (Haworth) Heinemann, Die Schmetterlinge 

 Deutschlanda und der Schweiz, Abt. 2, vol. 1, pt. 2, p. 156, 

 1865.— Grote, BuU. U. S. Geol. Geogr. Surv. Terr., vol. 4, 

 p. 695, 1878; North Amer. Ent., vol. 1, p. 11, 1879.— 



