46 ILLINOIS BIOLOGICAL MONOGRAPHS [278 



the segments bearing them, the lateral setae are larger than the paralateral 

 ones. The sterna are flat; each, except the first, bears a transverse 

 row of four large setae. In the first segment the ventro-lateral setae are 

 wanting. The caudal margins of the seventh and eighth sterna are deeply 

 emarginate. The tergum of the ninth segment is semicircular, about as 

 wide as long, and the dorsal surface is densely setaceous. The ninth 

 sternum is small and bears four small setae. The tenth segment is small, 

 cylindrical, glabrous, and directed ventrad. 



Hyperaspis Redtenbacher 



The members of this genus are generally white to cream-colored, and 

 the body is usually covered with a flocculent wax-like mass. When seen 

 from the dorsal aspect, the body is oval to elongate in outline, the dorsum 

 is strongly convex and the sternum is more or less flattened. The pro- 

 thorax is wider than long and bears setae which are not as long as the pro- 

 thorax is wide. The ninth abdominal segment is semicircular, wider than 

 long, and usually retracted into the eighth segment. The legs are small, 

 short, and well developed. The mandibles are unidentate and serve as 

 piercing organs. The members of this genus are carnivouous living for 

 the most part upon aphids and soft-bodied coccids. 



Species of Hyperaspis 



Body elongate-ovoid and densely covered with dark hair-like setae 

 H. binotata 



Body oval, not elongate, apparently glabrous, but with a few small 



inconspicuous setae H. signata 



Hyperaspis binotata Say. — The dorsal aspect of the body is brownish- 

 yellow to yellowish-gray; the front, vertex, and clypeus are spotted with 

 light or dark brown areas and provided with numerous setae. The pro- 

 thorax is about twice as wide as long and the cephalic and lateral margins 

 bear setae as long as the segment. The mesothorax and metathorax are 

 subequal in length, but the latter is the wider. The lateral margin of the 

 mesothorax is provided with a group of setae about as long as the segment, 

 while the lateral margin of the metathorax has a distinct chalaza on each 

 side which is surrounded by a group of long setae. The lateral margins 

 of abdominal segments one to eight are each provided with a chalaza sur- 

 rounded by a distinct group of setae. The dorsal surface of the thoracic 

 and abdominal segments are densely covered with short black setae. The 

 sterna and lateral aspects of the entire larva are provided with numerous 

 fine and inconspicuous setae. The tergum of the ninth abdominal seg- 

 ment is about twice as wide as long, not strongly chitinized, and the caudal 

 and lateral margins bear setae which are longer than the segment. The 

 sternum is about one-half as long as the tergum and deeply emarginate on 



