108 THE CANADIAN ENTOMOLOGIST. 



NOTES ON AMERICAN HEMIPTERA. 



BY DR. E. EERGROTH, HIRBING, MINN. 



I. 



Aradid.e. 



T. Aradus conciniius^ Bergr. — Female : Fifth ventral segment as long 

 in the middle as at the sides, with a transverse obtuse-angiilated keel a 

 little in front of the almost straight middle part of the apical margin, this 

 keel at the ends coalescing with the apical margin, apical angles of the 

 segment reaching a little beyond the slightly roimded apical margin of the 

 middle part of the sixth ventral segment, which is broader than long, apical 

 angles of this segment nearly reaching apex of second genital segment, 

 which does not project behind apex of abdomen and is half as long as the 

 transverse first genital segment, this more than twice as broad at base as 

 at apex, apical genital lobes shortly prominent beyond apex of abdomen, 

 somewhat distant interiorly, inner margin rounded, apical margin oblique, 

 notched before the middle, dorsal genital segment broadly rounded at 

 apex. 



I described this neat little species from a single male from South 

 California without nearer locality. Mr. Heidemann has received both 

 sexes from Palm Springs, Cal. It is the only known American species of 

 the groiip called Piestosoiiia by Laporte. 



2. Aradus Bekreusi, Bergr. — Of this species, hitherto known only 

 from California, Mr. Heidemann has sent me a specimen from Hood 

 River, Oregon. 



3. Aradus Htibbardi, Held. — Of this species Mons. Schouteden has 

 sent me a brachypterous female from Truckee, Cal. (5,800 ft.). In this 

 the corium extends only a little beyond the middle of the second abdominal 

 segment and the membrane is very short, appearing only as a rounded 

 border of the apical margin of the corium, not extending behind its apical 

 angle. I have never before seen a brachypterous imago of this group of 

 the genus. 



4. Aradus chicticornis^ n. sp. — Ovate, male not narrower than female, 

 blackish-brown, basal part and expanded lateral parts of the pronotum 

 yellowish, apical half of scutellum light brown with the apex black, 

 corium, connexivum and under-side of the body mottled with yellow, 

 apical angles of connexival segments yellow, second joint of antennae 

 sparingly and minutely speckled with yellow, third joint whitish except 

 at base, legs often minutely speckled with yellow, apex of tibiae testaceous. 



June, 1906 



