NORTH AMERICAN STENOMIDAE — DUCKWORTH 47 



blackish brown ; foreleg with coxa white or yellowish, tarsi ringed with 

 white; spurs of midtibia white, with few dusky scales, and mid- 

 tarsi ringed with white ; hindleg with two tibial rings, spurs and tarsal 

 rings white. Thorax greenish yellow dorsally sprinkled with brown 

 scales. Abdomen dark brown with metallic iridescence. Forewing 

 with triangular marking of basal third as in S. xanthobasis but greenish 

 yellow, concolorous and continuous with greenish yellow of thorax, 

 and with darker spot along posterior margin much shorter and more 

 restricted to anal region. Apical two-thirds dark brown with iri- 

 descent bronze-to-violet markings, in reflected light, in transverse 

 band across middle third of wing and an area that curves near wing 

 apex and extends parallel to outer wing margin. Hindwing as in 

 S. xanthobasis. 



Male genitalia: As in S. xanthobasis with exception of anellus, 

 which bears upright, median, dentate process in addition to two 

 lateral flattened upright processes, and cornuti, which consist of 

 several large single spines. 



Female genitalia: As in S. xanthobasis with exception of absence 

 of signum in corpus bursae and presence of sclerotized plate at junction 

 of ostium bursae and ductus bursae. 



Type: In the United States National Museum. 



Type locality: Los Angeles, California. 



Food plant: Quercus wislizenii A. DeCandoUe and Quercus agri- 

 folia Nee. 



Distribution: California: Forest Home, San Bernardino Co. 

 (June) ; Los Angeles Co. (July) ; San Diego (June, July) ; Baldy Mts. 

 (June); Pasadena (June); Santa Clara. Arizona: Madera Canyon, 

 Santa Rita Mts. (July, Aug., Sept.); Pena Blanca Canyon (Sept.). 



This species is readily distinguished from S. xanthobasis by its 

 cornuti that consists of more than one large single spine in the 

 aedeagus of the male and by the absence of a signum in the corpus 

 bursae of the female. 



Genus Mothonica Walsingham 



Mothonica Walsingham, 1912, Lepidoptera-Heterocera, vol. 4 (vol. 42 in Godman 

 and Salvin, Biologia Centrali- Americana), p. 153. 



1. Mothonica kimballi, new species 



Figures 20, 20a, 38; Plate 4b; Map 10 



Alar expanse 17-19 mm. 



Face ochreous shaded with fuscous; palpus white sprinkled with 

 fuscous, apical segment tipped with fuscous, second segment shaded 

 with fuscous basally. Legs creamy white, hindtibia with long hairs 

 above, fore- and midleg shaded heavily with fuscous. Thorax 



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