80 U.S. NATIONAL MUSEUM BULLETIN 2 55 



?, Mar. 29 (USNM). Ward Co.: Pyote, 5 d' cT, 9 9 9, May 26 (USNM). 

 Utah: Carbon Co.: Helper, 19 cf cf, 3 9 9, May 10 (USNM). Kane Co.: 

 Glendale, north of, 11 cf cf, 4 9 9, May 12 (USNM). Between Glendale and 

 Orderville, cf, May 12 (USNM). Uintah Co.: Note, 2 9 9, (CM). Wash- 

 ington Co.: St. George, northeast of, 2 cf cT, 2 9 9 , May 9 (USNM). Virginia: 

 Fairfax Co.: 8 cf cf, 9, May (USNM). 



MEXICO: Chihuahua: Samalayucca, 12 miles south of Chihuahua, 4 cfd^, 

 July 10 (UCB). 



Prodoxus y-inversus Riley 



Figures 62-63, 93, 119, 138; Map 9 



Prodoxus y-inversus Riley, 1892a, pp. 151ff., pi. 43, fig. 5; 1892b, pp. 98, 101, 

 fig. 14; 1892c, pp. 373, 375, fig. 73; 1892e, pp. 316, 319, fig. 19.— Dyar, 1902 

 [1903], p. 723, no. 6567; 1903b, p. 103.— Kearfott, 1903, no. 7105.— Holland, 

 1905, p. 439, fig. 258.— Barnes and McDunnough, 1917, p. 197, no. 8463.— 

 Balduf, 1932, p. 56.— McDunnough, 1939, no. 9826.— Busck, 1947, p. 184. 



Adult (figs. 62-63). — ^Wing expanse: male, 11-14 mm; female, 

 14-16 mm. 



Head: White. Antenna with basal one-half to two-thirds white; 

 outer one-half to one-third devoid of scales, fuscous. Labial palpus 

 white, ventral hairs brown. 



Thorax: White. Upper surface of primaries white with dark fus- 

 cous markings which are more developed in female than in male; 

 typically, 2 costal spots are present at base of wing and connected 

 along costa, as well as an inverted Y-shaped band situated in the 

 outer one-third of wing and extending transversely from costa to 

 hind margin; a large apical spot normally present, extending down- 

 wards sometimes as a bar to the outer arm of the inverted Y; under- 

 side of forewings hghtly shaded with fuscous, pattern of dorsal surface 

 clearly visible from beneath. Secondaries pale fuscous above and 

 below, more thinly scaled than primaries, scales hairhke; fringes of 

 fore- and hindwings pale fuscous. 



Abdomen: Fuscous above, whitish below. 



Male genitalia (fig. 93). — Apex of tegumen bilobed. Outer 

 margin of cucullus evenly curved, bearing usually 4-6 short spines. 



Female genitalia (figs. 119, 138).— Apex of ovipositor with dorsal 

 ridge present, abruptly terminating into ovipositor shaft; ridge with 

 approximately 38-44 teeth. Signum stellate, well developed, number 

 of rays usually 12-16. 



Type. — Lectotype (designated by present author), 9, no. 3059, 

 Dec. 5, 1884, USNM 422; in the U.S. National Museum. 



Type locality. — New Mexico (lectotype). 



Recorded host. — "Yucca sp. (but doubtless T. baccata)" (Riley, 

 1892a). Yucca schottii Englemann. Larva bores m fleshy part of 

 yucca fruit. 



