854 FAMILY XXIX. — MIKID^E. 



Coll.). A European species which Van Duzee records as taken 

 by Mrs. A. T. Slosson in Florida. 



X. Orthotylus Fieber, 1858, 315. 



Elongate-oval or oblong-oval species having the head wider 

 across eyes than apex of pronotum, its front vertical ; vertex 

 with a basal carina and in front of it a depressed line or area ; 

 tylus prominent, its base usually on a line with base of anten- 

 nae; beak reaching beyond middle coxae, its tip blackish; anten- 

 nae pubescent, shorter than body, basal joint stoutest, 3 and 4 

 setaceous ; pronotum trapezoidal, rather flat, usually wider at 

 base than long, sides straight, converging, basal margin feebly 

 concave or straight ; mesoscutum usually exposed ; scutellum 

 triangular, equilateral ; elytra entire, surpassing abdomen, 

 clavus deflexed toward corium, cuneus and membrane feebly 

 deflexed, the latter 2-celled. 



The North American species were monographed by Van 

 Duzee in 1916. About 45 species are known from this country, 

 21 of which have been recorded from the eastern states. For 

 convenience of study these are separated into two groups as 

 follows : 



KEY TO GROUPS OP EASTERN SPECIES OF ORTHOTYLUS. 



a. Ground color green or greenish-yellow, sometimes almost white, dark 



markings, if present, not clouding the elytra. Group A, p. 854. 



act. Ground color pale brownish-yellow to black, sometimes greenish when 



immature, but the elytra, in that case, marked with fuscous or 



black. Group B, p. 859. 



Group A. — Orthotylus. 



This group comprises small, moderately elongate green or 

 greenish-yellow species having the base of vertex sharply 

 carinate; pronotum short, transverse; legs short. It includes 

 eight of our eastern species. 



KEY TO EASTERN SPECIES OF GROUP A, ORTHOTYLUS. 



a. Upper surface with two types of pubescence, viz., closely appressed 



scale-like hairs intermixed with longer inclined or suberect slender 



ones. 



h. Antenna? green or greenish-yellow; veins and cells of membrane 



green. 



c. Upper surface without patches of appressed black scales; color 



pale green or greenish-yellow; host plant, lamb's quarters, 



Chenopodium album L. 929. flavosparsus. 



