AMERICAN MOTHS OF THE SUBFAMILY PHTCITINAE 



251 



stant in long series. Female genitalia with signum a 

 trifle smaller than that of any other Yosemitia, other- 

 wise not specifically distinguished. 



Larvae dark, dull blue and solitary or gregarious in 

 habit, according to Dodd. 



Type locality: Blanco County, Tex. (type in 

 AMNH, ex Rutgers). 



Food plants: Echinocereus viridiflortis Engelmann, 

 E. polyacanthus Engelmann, and Coryphantha aggregata 

 (Engelmann). 



Distribution: Colorado, Denver (July), and one 

 specimen with only the State designation; Nevada, 

 Clark County (Apr., May) ; California, San Bernardino 

 County (Apr.), Providence Mts. (May), one specimen 

 with only State designation (Apr.); Arizona, Yavapai 

 County, Ajo (Pima County, Mar.), Baboquivari Mts. 

 (May), White Mts. (June), Pinal Mts. (Apr.), Quijotoa 

 Mts. (June), Santa Rita Mts. (June), Sells Post Office 

 (Pima County, May), "en route from Dewey to Salome" 

 (Apr.), Mojave Coimty (May), Roosevelt (June), 

 Phoenix (Mar., Apr.), Redington, no locality except 

 the State (2 specimens reared from Coryphantha aggre- 

 gata, June); New Mexico (Mar.); Texas (no specific 

 locality, one specimen reared from Echinocereus viridi- 

 florus; Apr.). 



517. Yosemitia longipennella (Hulst) 

 Figures 546, 1032 



Zophodia longipennella Hulst, Ent. Amer., vol. 4, p. 118, 1888. 

 Zophodia gracietla (Hulst, in part), Phycitidae of N. Amer., p. 



173, 1890. 

 Yosemitia graciella (Hulst, in part) Ragonot, Monograph, pt. 2, 



p. 13, 1901. 

 Yosemetia graciella longipennella (Hulst) Barnes and McDun- 



nough. Check list of the Lepidoptera of Boreal America, 



No. 5699, 1917. 

 Yosemetia longipennella (Hulst) Dyar, Ins. Insc. Menstr., vol. 13, 



p. 220, 1925. 

 Yosemitia longipennella (Hulst) Heinrich, Proc. U. S. Nat. Mus., 



vol. 86, p. 370, 1939.— McDunnough, Check list. No. 6294, 



1939. 



Similar to graciella except black dusting on forewing 

 sparse, veins not or but very faintly outlined by black 

 scales, transverse subterminal line not interrupted 

 between veins 6 and 5, dentate. Alar expanse, 21-26 

 mm. 



Genitalia similar to those of graciella but with signum 

 of female a trifle larger. 



Larvae dark dull blue and gregarious in habit, accord- 

 ing to Dodd. 



Type locality: Texas (type in AMNH, ex Rutgers). 



Food plant: Homalocephala texensis (Hopffer). Ac- 

 cording to Dodd the larvae also feed in Neomamillaria. 



Distribution: Texas, Uvalde (June), "Big Bend" 

 (Apr.), San Antonio (June), Van Horn (Jime), San 

 Diego (Apr.), San Benito (Apr., May). 



518. Yosemitia fieldiella (Dyar) 

 Figure 544 



Zophodia fieldiella Dyar, Ins. Insc. Menstr., vol. 1, p. 35, 1913. — 

 McDunnough, Check list, No. 6310, 1939. 



Yosemitia fieldiella (Dyar) Heinrich, Proc. U. S. Nat. Mus., 

 vol. 86, p. 371, 1939. 



Forewing heavily dusted with white on costal half 

 and with some scattered white scales on remainder of 

 wing; area between inner margin and cell pale brownish; 

 antemedial line incomplete, distinct only from costa to 

 lower vein of ceU; subterminal line complete but obscure 

 except for the blackish costal dash, dentate, the incurva- 

 tion between veins 6 and 5 shallow; from antemedial 

 line, where it meets the cell, a thin, obscure, curved, 

 blackish line extends to upper outer angle of cell; 

 discal dot small, obscure; on some specimens a few black 

 scales outlining vein 6; on termen a row of obscure 

 blackish dots lying between the vein ends. Hind 

 wing white, in female faintly tinted with smoky fuscous; 

 a very pale fuscous line along termen. Alar expanse, 

 22-25 mm. 



Male genitalia with basal portion of anellus more 

 narrowly sclerotized and arms correspondingly longer 

 than in the other species of the genus; vinculum also 

 broader and shorter. Female genitalia similar to those 

 of longipennella, but signum somewhat larger. 



Type locality: La Puerta Valley, Calif, (type in 

 USNM). 



Food plant: Unknown 



Distribution: California, La Puerta Valley (July); 

 Arizona, Catalina Springs (May) . 



519. Yosemitia didactica Dyar 

 Figure 545 



Yosemitia didactica Dyar, Proc. U. S. Nat. Mus., vol. 47, p. 

 408, 1915.— Heinrich, Proc. U. S. Nat. Mus., vol. 86, p. 

 372, 1939. 



Forewing heavily dusted with white on costal half; 

 a short blackish line on midcosta; lower half of wing 

 concolorous with thorax; antemedial hne obscure, 

 incomplete; discal dot at outer end of cell distinct, 

 blackish; subterminal line complete, dentate, double for 

 a short distance from apex and thence outwardly 

 margined by a narrow pale shade, obscure toward inner 

 margin, parallel to termen; veins 5 to 9 very faintly 

 outlined by dark scaling; terminal row of dots almost 

 obsolete. Hind wing whitish, faintly smoke tinted, 

 somewhat darker toward apex and along termen; cilia 

 with a pale smoky subbasal line. Alar expanse, 

 22-23 mm. 



Male genitalia with vinculum rather longer than that 

 of any other species in the genus; aneUus with arms 

 bent about aedeagus. Female genitalia similar to 

 those of graciella. 



Type locality: Tehuacdn, Mexico (type in USNM). 



Food plant: Unknown. 



Distribution: M:6xico: Tehuacdn (May, Jime), 

 Orizaba. 



This species resembles graciella but is somewhat paler 

 and the male has slightly darker (smoky) hind wings. 

 It is at once distinguished by the dark line on the 

 midcosta of the forewing. Its Hfe history is unknown. 



