pepsinae: tribe pepsini 



37 



Maxwell, McKinney, Paris, Shiloh, Stanton, Waco, Wichita Falls, 

 and Williamson County); Utah (Bear Valley, Bellevue, and Zion 

 Park) ; and Mexico (Distrito Federal, La Laguna in the Sierra Laguna 

 of Baja California, Nuevo Laredo, Palos Colorados at 8,000 ft. in 

 Durango, San Bartola Dam in Baja California, Zacapu in Michoacdn, 

 and Zimapan in Hidalgo). 



Collection dates range from Apr. 1 at Douglas, Ariz., to Dec. 26 

 in Sabino Canyon, Santa Catalina Mts., Ariz. Relatively few of the 

 collection dates fall after Oct. 5, and no males are on record after 

 Oct. 14. Flower records comprise Polytaenia nuttallii and Daucus 

 carota. 



This is a conspicuous form in the southwestern United States 

 (except California) and adjacent Mexico, occurring abundantly in the 

 Lower and Upper Sonoran faunal areas and commonly in the Transi- 

 tion. I have seen it in numbers in April in the Sonoran desert of 

 Arizona, where the males often perch in the tops of the highest palo 

 verde trees {Cercidium microphyUum) on the crests of the desert hills. 

 For remarks on intergrading with the subspecies ochroptera, see under 

 that form. 



2b. Hemipepsis ustulata ochroptera Stal 



Plate 1, figure 3 



Hemipepsis ochroptera St&l, 1857, Ofvers. Svenska Vet.-Akad. F6rh., vol. 14, 



p. 64. Type: California (lost). 

 Mygnhnia hesperina Banks, 1917, Bull. Mus. Comp. Zool., vol. 61, p. 102, d^, 9 • 



Type: 9, Stanford University, Calif. (Cambridge). 



Forewing of male 11 to 23 mm. long, of female 14 to 27 mm. long. 

 Blackish color at wing bases not conspicuous, extending on the wing 

 bases less than half the length of the anal lobe, though the lobe itself 

 is largely or entirely infuscate. 



Figure 12. — Localities for Hemipepsis ustulata ochroptera. 



