TRir.E VII. ERIRHININI. 



205 



279 (8545). DESMORIS SCAPALIS Lee., 1876, 168. 



Oval, convex. Black or dark brown, rather densely clothed above 



and beneath with grayish-yellow 

 scales; those of upper surface oval, 

 more condensed and forming wavy 

 transverse markings on the elytra, 

 those of under surface rounded, 

 smaller and paler; legs dull red, 

 femora blackish at base. Beak of 

 male as long as head and thorax, 

 densely punctured on basal two- 

 thirds, more finely toward apex; of 

 female, one-third longer, more slend- 

 Fig. 67. Upper and side views, x 6. er - almost straight, polished and 



(After Hunter & Hinds.) 



very sparsely punctate in front of 



antennae. First and second joints of funicle subequal, male, first two- 

 thirds the longer, female. Thorax as wide as long, sides feebly rounded, 

 not constricted near apex, male; one-third wider than long, rather strongly 

 rounded, distinctly constricted near apex, female; disc rather coarsely, 

 deeply and densely punctate. Elytra oval, at base one-third wider than 

 thorax, conjointly but little more than one-half longer than wide; sides 

 parallel in basal half, then gradually curved to the rounded apex; striae 

 fine, deep, obscurely punctate; intervals wide, flat, the alternate ones 

 slightly narrower in female. Length 4.2 5 mm. (Fig. 67.) 



Palos Park, Edgebrook nnd Chicago, 111.; June 4 August 25. 

 Summit of Mt. Washington, New Hampshire (Dodge). Known 

 also from Kansas, Colorado and Texas. According to Pierce 

 (1907, 263) it occurs in Texas especially on a species of Com- 

 posite, 8i<lcranthns ntlnginosns T. & G., the adults feeding on 

 the tender leaf-buds in June and July, and the larvae in the heads 

 among the achenes. This is our largest species of the subtribe. 

 As the description shows, the sexes differ not only in the usual 

 characters of beak, but also in form of thorax and length of an- 

 tenna! joints. D. com par Dietz is the female. 



280 (10,896). DESMORIS PERVISUS Dietz, 1894, 125. 



Elongate-oval. Piceous or dark reddish-brown, the antennae, legs and 

 apical third of beak usually paler; above rather sparsely, beneath more 

 densely, clothed with oval grayish-white scales. Beak slender, cylindrical, 

 as long as head and thorax, scaly and distinctly punctate from base to 

 antenna?, naked and nearly smooth beyond, male; one-half longer and pol- 

 ished beyond antennae, female. Thorax about as wide as long, sides broadly 

 rounded from base to beyond middle, thence converging to the narrowed 

 but not constricted apex; disc rather finely, not densely punctate and us- 

 ually with a narrow, smooth median line on apical two-thirds. Elytra 

 nearly one-half wider at base than thorax, humeri prominent, base trun- 

 cate; sides nearly straight to beyond middle, then gradually curved to 



