MOTHS OF FAMILY WALSHIIDAE — HODGES 313 



"Juxta" with hole in center, lacliing sclerotized bands (fig. 21). 



S. daedala, new species 



BASED ON FEMALE GENITALIA 



Pregenital plate narrow, constricted, appearing as attenuated triangle (fig. 44). 



S. daedala, new species 

 Pregenital plate broad, rectangular (fig. 43) S. nimbosa (Braun) 



Sorhagenia nimbosa (Braun), new combination 



Figures 20, 43, 64 



Cystioecetes nimbosus Braun, 1915, Canadian Ent., vol. 47, p. 195. — 'Barnes and 

 McDunnough, 1917, Check list of the Lepidoptera of boreal America, p. 

 152.— Fletcher, 1929, Mem. Dep. Agric. India, Ent. Ser., vol. 11, p. 63.— 

 McDunnough, 1939, Mem. Southern California Acad. Sci., vol. 2, pt. 1, p. 63. 



Head, thorax, and forewings dark fuscous; scales tipped with pale 

 fuscous; hind wing fuscous. Male genitalia: as in figure 20 (RWH 

 slide 588), juxta(?) with concentric series of more heavily sclerotized 

 bands, apex of uncus inset from basal portion. Female genitalia: 

 as in figure 43 (RWH slide 587), pregenital plate subrectangular, 

 heavily sclerotized ridge running from each anterolateral corner toward 

 ostium bursae. Alar expanse: 9-12 mm. 



Food plant: Rhamnus spp. (including B. purshiana D.C.). Braun 

 (1915) gives the following on the larval habits: ''The larva feeds 

 within a large inflated gall-like chamber formed from the two halves 

 of the leaf, which are closely appressed above, just below the margins 

 of the leaf, and near each end. The leaf bulges between the lateral 

 veins forming a series of pouches projecting from the large elongate 

 chamber. The larva is pale grayish brown, with head and pro thoracic 

 shield shining pale brown. A small silken cocoon is spun, often just 

 outside the larval habitation, where the sides of the leaf diverge, or 

 between leaves on the bottom of the breeding jar." 



Holotype: in collection of Annette F. Braun. 



Type locality: Mills College, Alameda Co., Calif. 



Specimens examined: California: Colfax, 1 cf, July 28, 1932, 

 Fourness, USNM; Gold Run, 1 9, ex Rhamnus calif ornicus, collected 

 June 19, 1932, emerged July 19, 1932, Keifer, USNM; Mills College, 

 2 c?", 2 9, Braun 284, emerged June 22, 24, G. R. Pilate (AB slide; 

 RWH slides 588, 589), AFB, USNM; Oroville, 6 cT, 2 9, bred from 

 R. calif ornicus July 5-26, H. H. Keifer (RWH shdes 586, 587), 

 CAS; Wiemar, Placer Co., 1 9, July 7, 1932, Fourness, USNM; 

 WASHINGTON: Kent, 3 d^, 3 9, reared from Rhamnus purshiana 

 (Burke), USNM; Lynden, 3 cf, 5 9, reared from Rhamnus purshiana, 

 July 16-Aug. 28, 1934, J. B. Lauckhart (JFGC sHde 3390; AB slides 

 Oct. 14, 27, 1930; RWH wing slide 38), USNM. 



