250 



UNITED STATES NATIONAL MUSEUM BULLETIN 207 



515. Rumatha polingella (Dyar) 

 FiQiTEES 541, 1029 



Zophodia polingella Dyar, Journ. New York Ent. Soc, vol. 14, 

 p. 31, 1S06.— McDunnough, Check list, No. 6312, 1939. 



Rumatha polingella (Dyar) Heinrich, Proc. U. S. Nat. Mus., vol. 

 86, p. 367, 1939. 



Similar in appearance to that of bihinda but with 

 transverse antemedial and subterminal lines more dis- 

 tinctly continued to inner margin of forewing; indenta- 

 tions of subterminal line not so deep as in bihinda and 

 not extending to ceU; a scattering of pinkish scales 

 among the white scales on costal area of forewing. Alar 

 expanse, 23-35 mm. 



Male genitalia similar to those of bihinda but with 

 harpe narrower, apex of harpe more acutely rounded, 

 and aedeagus slightly narrower in proportion to its 

 length. Female genitalia essentially like those of bi- 

 hinda except that the sclerotized plates in genital open- 

 ing are not so distinct and the signiun is on the average 

 smaller. 



Type locality: Southern Arizona (type in USNM). 



Food plant: Opuntia {Cylindropuntia) leptocaulis 

 De CandoUe. 



Disteibtjtion: Arizona, Douglas (June, Aug.), Red- 

 ington, Palmerlee, Paradise (Cochise County, July, 

 Sept.), Pinal Mts. (Apr.), Baboquivari Mts. (June, July, 

 Aug., Sept.), Santa Catalina Mts. (Aug.), "southern 

 Arizona" (Apr.); Texas, Presidio (Aug.). 



The Texas record is from a small reared male, giving 

 us our first food plant record for the species. 



143. Genus Yosemitia Ragonot 



Yosemitia Ragonot, Monograph, pt. 2, p. 17, 1901. — Heinrich, 

 Proc. U. S. Nat. Mus., vol. 86, p. 368, 1939. (Type of genus: 

 Spermatopihora graciella Hulst.) 



Yosemetia Hulst, U. S. Nat. Mus. Bull. 52, p. 429, 1903.— Dyar, 

 Ins. Insc. Menstr., vol. 13, p. 220, 1926. (Misspelling.) 



Tongue well developed. Antenna of male weakly 

 serrate and pubescent, of female simple and shortly 

 pubescent. Labial palpi obliquely porrect. Maxillary 

 palpus faa shaped and held vertically to the face. Hind 

 wing with veins 7 and 8 anastomosing beyond cell; 

 veins 3 and 5 stalked. Eighth abdominal segment of 

 male simple. 



Male genitalia with apical process of gnathos bifid; 

 harpe with apex evenly rounded ; vinculum moderately 

 long; anellus with arms broad, short, slightly twisted, 

 and base of plate broadly sclerotized; aedeagus short 

 and slender, sclerotized throughout. 



Female genitalia with signum developed as a small, 

 shortly spined plate; ductus bursae short; bursa copu- 

 la trix finely scobinate, especially in area about signum; 

 ductus seminalis from bursa near junction of bursa and 

 ductus bursae. 



Larvae bluish, dark, not banded, or conspicuously 

 spotted. 



The larvae feed gregariously (sometimes singly) in 

 Echinocereus, Coryphantha, Homalocephala, and pre- 

 sumably also in Echinoeactus and Neomamillaria. 



Eggs laid singly. 



This genus as here defined is distinguished by the fol- 

 lowing combination of characters: Male antenna ser- 

 rate and pubescent; labial palpi porrect in both sexes; 

 maxillary palpi fan shaped ; male genitaha with vincu- 

 lum moderately long and rather narrow, apical process 

 of gnathos bifid, anellus small and stout with broad 

 short arms, aedeagus slender; eighth abdominal segment 

 of male simple; female genitaha with signum a small, 

 shortly spined plate, ductus bursae short and ductus 

 seminalis from bursa copulatrix near junction of bursa 

 and ductus bursae; larvae not banded and normally 

 gregarious. 



The male genitalia have a characteristic habitus 

 which makes them easy to place genericaUy; but the 

 differences between species are very slight and not alto- 

 gether trustworthy, hardly more than might be expected 

 within specific Hmits. 



Four species are recognized as belonging to the genus. 

 Its distribution is the southwestern part of the United 

 States and Mexico. 



516. Yosemitia graciella (Hulst) 

 Figures 68, 547, 1033 



Spermatopihora graciella Hulst, Ent. Amer., vol. 3, p. 134, 1887. 

 Zophodia graciella (Hulst), Phycitidae of N. Amer., p. 173, 1890. 

 Yosemitia graciella (Hulst) Ragonot, Monograph, pt. 2, p. 13, 



1901. — Barnes and McDunnough, Contributions, vol. 3, p. 



199, 1916.— Heinrich, Proc. U. S. Nat. Mus., vol. 86, p. 369, 



1939.— McDunnough, Check list, No. 6293, 1939. 

 Yosemetia graciella (Hulst), U. S. Nat. Mus. BuU. 52, p. 429, 



1903.— Dyar, Ins. Insc. Menstr., vol. 13, p. 220, 1925. 



Forewing pale brownish fuscous dusted and streaked 

 with black and dusted with white scales; the white 

 scaling concentrated on and strongly whitening the 

 costal half of the wing; the black scaling thinly dusted 

 over the lower half of the wing (between cell and inner 

 margin) and outlining the veins; transverse lines incom- 

 plete, blackish; the antemedial hne indicated only by a 

 transverse dash in the cell and a dot or very short streak 

 on inner margin ; subterminal line prominent from costa 

 near apex to vein 8 (sometimes to vein 6), inwardly 

 slanting, interrupted between veins 6 and 5, obscm-e 

 between vein 2 and inner margin; discal dots fused into 

 a line of black scales on discocellular vein; a row of 

 small black dots along termen between the vein ends. 

 Hind wing whitish to very pale smoky fuscous, faintly 

 darker at apex, along costa, and narrowly along termen; 

 cUia white with a very fine, pale fuscous, subbasal line. 

 Alar expanse, 25-30 mm. 



Male genitalia very little different from those of other 

 species in the genus; the vinculum is not so broad as 

 that oifieldiella or so long as that of didaciica; the anelli 

 of the several species seem to offer the best characters 

 for separating the species on genitalic characters; those 

 of graciella and longipennella are much alike, but in 

 didactica the arms appear to be more sharply twisted 

 and in fieldiella the basal portion is more narrowly 

 sclerotized and the free arms, therefore, correspondingly 

 longer. These characters, however, may not be con- 



