352 PROCEEDINGS OF THE InTATIONAL MUSEUM vuu 86 



1. CAHELA PONDEROSELLA (Barnes and McDnnnoogh) 



PISTES 26, 38, 47; Figukes 13-13f, 51-51a, 102-102a, 103-103a 



Olyca ponderosella Babnes aud McDunnough, Contr. Nat. Hist. Lepid. North 



America, vol. 4, no. 2, p. 175, 1918. 

 Zophodia piirgatoria Dyab, Insecutor Insscitiae Menstruus, vol. 13, p. 222, 1925. 



(New synonymy.) 

 Cactolrosis interstitialis Dtab, Insecutor Inscitiae Menstruus, vol. 13, p. 223, 



1925; Proc. Ent. Soc. Washington, vol. 30, p. 136, 1928. (New synonymy.) 

 Cactohrosis phooih-is Dyar, Insyeutor Inscitiae Menstruus, vol. 13, p. 223, 1925; 



Free. Ent. Soc. Washington, vol. 30, p. 136, 1928. (New synonymy.) 

 Cactohrosis (?) ponderosella (Barnes and McDunnough) Dtab, Proc. Ent. Soc 



Washington, vol. 30, p. 136, 1928. 



Male. — Head, thorax, fore wings, and body dark fuscous-gray pep- 

 pered with white and with pronounced, longitudinal, black lines on 

 the fore wing ; a long black line through the cell and extending from 

 near base of wing to termen; another long black line from base to 

 tornus running parallel and very close to the fold; in outer area, 

 from beyond cell to apex and termen, five other shorter black lines, 

 the longest and most pronounced above vein 6; all the black lines 

 between and not on the veins; antemedial and subterminal lines 

 normally obsolete; in a veiy few specimens a faint indication of a 

 partial, black, antemedial line and in several specimens a dark shade 

 from end of cell to middle of inner margin, but no trace of any 

 transverse subterminal line ; body somewhat paler than fore wing or 

 thorax. Hind wing white, semihy aline, termen for a short distance 

 from costa very faintly and narrowly edged with fuscous. 



Alar expanse, 30-40 mm. 



Genitalia (figs. 13-13f ) figured from type. There is some variation 

 in the shape and size of the terminal process of the gnathos in differ- 

 ent specimens from any given locality. The extremes of variation are 

 shown in figures 13-13c. 



Female. — Similar to the male in color and markings except for a 

 more pronounced fuscous shading along termen of hind wing. 



Alar expanse, 26-42 mm. 



Genitalia (figs. 51-51a) figured from paratype from the type locality. 

 The size of the signum and bursa varies somewhat in different speci- 

 mens, but the variations are slight and can be found in any series from 

 one locality. 



Types. — In United States National Museum {ponderosella, purga- 

 toria, interstitialis, phoenicis). 



Type localities. — Palm Springs, Calif, {ponderosella, phoenicis) ; 

 Colorado Desert, Yuma County, Ariz, {purgatoria) ; Presidio, Tex. 

 {interstitialis). 



