266 



UNITED STATES NATIONAL MUSEUM BULLETIN 207 



dots along terminal margin. Hind wing glistening 

 white with some faint fuscous shading on the veins and 

 along terminal and costal margins. Alar expanse, 

 14-19 mm. 



Genitalia as given for the genus; aedeagus sharply 

 constricted towards apex; apical margin of anellus 

 broadly notched; elements of transtilla long, slender. 



Type locality: Catalina Springs, Ariz, (type in 

 USNM). 



Food plant: Unknown. 



Distribution: Arizona, Catalina Springs (Apr.), 

 Redington, "Southern Arizona" (May), Tempe (June). 



157. Genus Entmemacornis Dyar 



Entmemacornis Dyar, Ins. Insc. Menstr., vol. 7, p. 57, 1919. 

 (Type of genus: Entmemacornis proselytes Dyar.) 



Tongue well developed. Antenna pubescent; of 

 male (fig. 566f) with basal segment broadened and shaft 

 with notch at base; of female simple. Labial palpus 

 upturned, reaching to vertex, slender; third segment 

 nearly as long as second, acuminate. Maxillary palpus 

 minute, fiUform. Forewing smooth; 11 veins; vein 2 

 from well before lower, outer angle of cell; 3 from the 

 angle; 4 and 5 shortly stalked (for less than half their 

 lengths), the stalk separated from 3 at base; 6 from 

 below upper angle of cell, slightly curved towards base; 

 8 and 9 long stalked; 10 from the cell but approximate 

 to the stalk of 8-9 for some distance; male with a 

 narrow costal fold. Hind wing with vein 2 from well 

 before lower outer angle of cell; 3 and 5 connate from 

 the angle; 7 and 8 anastomosed almost to costa (free 

 element of 8 very short) ; cell less than half the length 

 of the wing; discocellular vein curved. Eighth abdom- 

 inal segment of male with a pair of ventrolateral hair 

 tufts. 



Male genitalia with apical process of gnathos bifid, 

 consisting of a pair of short blunt arms (similar to but 

 not so widely separated as those of Selga). Uncus 

 semispoon-shaped (of the Diatomocera type). Tran- 

 stilla complete but weakly sclerotized, a broad, finely 

 scobinate plate, weakly attached to harpes. Harpe 

 simple; terminal margin evenly rounded; costa sclero- 

 tized throughout but not produced; on outer surface 

 bordering lower margin a row of modified, flattened 

 setae. Anellus a curved plate with short lateral lobes. 

 Aedeagus stout, straight, moderately long ; penis with a 

 few sclerotized wrinklings and several minute spines 

 (the latter distinguishable only under high magnifica- 

 tion), otherwise imarmed. Vinculum stout, elongate, 

 constricted towards angulate terminal margin. 



Female genitalia with bursa copulatrix long, minutely 

 but sparsely scobinate, the scobinations extending into 

 ductus bursae; signa present, consisting of small 

 sclerotized disks; ductus bursae long, slender, un- 

 sclerotized; genital opening simple; ductus seminahs 

 from bursa near its anterior end. 



On nearly all characters except hind-wing venation 

 this genus agrees with Diatomocera in group I. Were 

 it not for the fact that the four specimens of the type 



series of Entmemacornis proselytes are consistent in 

 venation, I should be inclined to discount the absence 

 of vein 4 in hind wing as an individual aberration and 

 unite the two genera; but apparently the same relation- 

 ship prevails here as that between Drescoma and Dresco- 

 mopsis. Entmemacornis is closely related to and 

 obviously derived from Diatomocera but is apparently 

 distinct. 



549. Entmemacornis proselytes Dyar 



FiGUBES 81, 566, 1058 



Entmemacornis proselytes Dyar, Ins. Insc. Menstr., vol. 7, p. 58, 

 1919. 



Thorax gray brown; tegulae tips black. Forewing 

 gray-brown dusted with dull white and reddish scales 

 (the latter only distinguishable under magnification); 

 antemedial line slanting, notched at lower fold, whitish 

 and concolorous with the general color of the basal area, 

 defined inwardly by a narrow, faint, dark border and 

 outwardly by a diffused dark shade; from base of wing 

 a median longitudinal black streak extending to but 

 not cutting the antemedial pale line; sub terminal Une 

 faint, parallel and rather close to termen, outcurved 

 between veins 6 and lower fold, formed by whitish 

 scaling on the veins and bordered by narrow inner and 

 outer dark lines more or less interrupted between the 

 veins; distal and terminal dots, small, faint, blackish; 

 between cell and subterminal line black streaks on veins 

 5 and 6 ; costal fold of male about one-third the length 

 of costa. Hind wing pale, glossy, brownish gray; the 

 veins and terminal margin darker. Alar expanse, 

 15-17 mm. 



Male genitalia with terminal margin of uncus convex; 

 apex of harpe narrowly rounded; arms of bifid apical 

 process of gnathos slightly convergent toward their 

 apices; plate of anellus narrow. Female genitalia with 

 bursa bent sharply at middle, its terminal margin 

 straight. 



Type locality: Cayuga, Guatemala (type in USNM). 



Food plant: Unknown. 



Known only from the type series, two males and two 

 females from the type locahty. 



550. Entmemacornis pulla, new species 



Figure 567 



Forewing blackish gray; antemedial line slanting, 

 notched at lower fold, dull white with a very faint, 

 narrow, blackish outer border; subterminal line some- 

 what irregular, slanting sharply inwardly from costa to 

 vein 8, then outwardly convex to lower fold, thence 

 straight to inner margin, dull white with some blackish 

 streaks on the veins bordering it on both sides; discal 

 and terminal dots small, faint, blacldsh; basal area of 

 wing before antemedial line and between cell and inner 

 margin dull reddish ocherous ; a dusting of similar color 

 along the fold beyond antemedial line; from base of 

 wing a median longitudinal black streak extends to 

 antemedial line; bordering termen a narrow faint dust- 

 ing of whitish scales; costal fold of male less than one- 

 fourth the length of costa. Hind wing very pale 



