NORTH AMERICAN STENOMIDAE — DUCKWORTH 43 



(Aug.). SOUTH CAROLINA: DO locality (Feb.), texas: Burnet Co. 

 (Oct.); Kerrville. new jersey: Lakehurst (July, Sept.). 



This species is similar to A. Irene but it is distinguishable by the 

 apically dilated uncus, by the gnathos with two sharp-pointed lobes, 

 and by the anellus with fom* lobes in the male genitalia. The absence 

 of specialized structures around the ostium serves to distmguish the 

 females. 



Walsingham (1889) syiionymized Harpalyce albella Chambers with 

 I. vestalis; however, examination of Chambers' type located in the 

 Museum of Comparative Zoology reveals that H. albella belongs in the 

 genus Durrantia Busck and is so transferred. 



15. Antaeotricha manzanitae Keifer 



Figures 15, 37; Plate 3c; Map 7 

 Antaeotricha manzanitae Keifer, 1937, California Dept. Agric. Bull., vol. 26, p. 334. 



Alar expanse 25-30 mm. 



Color: Face whitish ochreous; palpus overlaid with fuscous. Legs 

 white, overlaid with fuscous; foreleg darkest, mid- and hindleg pro- 

 gressively hghter. Thorax white dorsally with brownish-black tuft 

 posteriorly. Abdomen white. Forewing white, irregularly shaded 

 fuscous scales; two patches of dark scales at anal angle: apical margin 

 with row of faint, transverse, fuscous dots. Cilia fuscous, white 

 tipped. Hindwing light fuscous: cilia hghter. 



Male genitalia: Uncus curved, dilated at tip, terminating in two 

 short spines: gnathos well developed, ending in short blunt tip; harpes 

 as in A. schlaegeri; anellus with two lobes, one on each side of aedeagus. 

 Aedeagus short and broad; cornuti a small cluster of spines. 



Female genitalia: Genital plate small, bandlike; ostium bursae and 

 ductus bursae membranous: corpus bm'sae corrugated; inception of 

 ductus seminalis near ostium. 



Type: In the California Academy of Science. 



Type locality: Shingle Springs, El Dorado Co., California. 



Food plant: Ardostaphylos sp. Keifer (1937) gives a thorough 

 account of the life history of this species with numerous illustrations. 



Distribution : California : Shingle Springs, El Dorado Co. (April) ; 

 Palm Desert (Apr.) ; Big Basin (July) ; Mt. Shasta City, Siskiyou Co. 

 (July); Hat Creek, Shasta Co. (June). Oregon: Tiller (June). 

 BRITISH Columbia: Wellington (July). 



This species is similar in size and color to A. schlaegeri, but it is 

 separable by the presence of two small spines on the tip of the uncus 

 in the male and by the cornjgated corpus bursae in the female. 



