14 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



tional males from the same lot ("Nev." [Morrison] ). One of these bears 

 Hy. Edwards's label "Aegeria opalesccns, Type." Hence, there is no ques- 

 tion about tlie examples that served him for description. The type of 

 Sannina pacifica Riley, a female (Santa Clara County, Calif., June), is in 

 the United States National Museum. In addition, good series covering 

 the range of graefii are at hand. Compared with examples from Wash- 

 ington and Oregon, the primar}- wings become increasingly more opaque 

 southward into California and Nevada. Northward from Oregon and 

 Washington, females occasionally show indications of yellow bands on the 

 fourth abdominal segment. On examples from Montana the bands have 

 developed to about the full width of segment 4 and are dull yellow, not 

 orange. 



PENSTEMONIA, new genus 



Genotype, Aegeria edwardsii Beutenmiiller. 



Tongue rudimentary. Labial palpus with a short, rough brush. Fore- 

 wing with veins 10 and 11 confluent at tip, 7 stalked to apex; hindwing 

 with veins 3 and 4 stalked. Posterior tibiae smooth, with tufts of stiff 

 scales at spurs ; posterior tarsi not thickened. Anal tuft of male fan- 

 shaped; some specimens with a hair pencil on each side, longer than the 

 tuft. Male genitalia having sacculus ridge with flat, forked scales ter- 

 minating on edge ; cornuti paired, strong, short spines. Female genitalia 

 with ductus strongly sclerotized posteriorly ; no signum. 



The genus is close to Carmenta and Ramosia, differing mainly in the 

 rudimentary tongue. All the species are root or stem borers in species 

 of Pensteinon. 



PENSTEMONIA EDWARDSII (Beutenmuller) 



Plate 1, Figure 3; Plate 4, Figures 30, 30a; Plate 13, Figure 60; 

 Plate 17, Figures 89, 90 



Aegeria edwardsii Beutenmuller, Bull. Amer. Mus. Nat. Hist., vol. 6, p. 92, 1894. 

 Sesia edzvardsii Beutenmuller, Bull. Amer. Mus. Nat. Hist., vol. 8, p. 142, 1896; 



Mem. Amer. Mus. Nat. Hist., vol. 1, pt. 6, p. 313, pi. 32, fig. 16, 1901. 

 Sesia titahensis Beutenmijller, Ent. News, vol. 20, p. 83, 1909 (female). 

 Synanthedon edzvardsi McDunnough, Check list of the Lepidoptera of Canada and 



the United States of America, pt. 2, No. 8761, 1939. 



Sexes dissimilar. 



Male. — Antennae violaceous-black, strong, rather prominently dilating 

 to the tips, pectinations well developed. Palpus white, third joint mixed 

 with black, densest at tip and behind. Head black, orbits white. Collar 

 whitish yellow. Thorax metallic black, patagia with a narrow pale-yellow 

 stripe, metathorax tufted with long sordid-white hair at the sides ; beneath 

 with sordid-white patches before and at the wing base. Abdomen metallic 

 black, with fourth and last segment broadly banded with sordid white 

 above and beneath and segments 2, 5, and 6 narrowly banded with sordid 



