HIGH PRAIRIE 



293 



katydid (Scudderia texensis) are taken from the goldenrod. From the 

 goldenrod we also take the goldenrod beetle (Trirhabda tormentosa 

 var. canadensis) and the case-bearer (Pachybrachys). The lady-beetles 

 (Cycloneda, Hippodamia, Megilla, etc.) are common. The clover-leaf 

 beetle (Languria mozardi?) (Fig. 305) is also of common occurrence. 

 The snout-beetles are represented by the large, elongated Lixus (Fig. 

 306), the larvae of which feed in the stalks of rank weeds. 



Fig. 303. — The lady-beetle {Megilla macidata DeG.) and its life history: a, larva; 

 b, pupa; c, adult (Chittenden, U.S. Dept. Agr.); enlarged as indicated. 



Fig. 304. — Meadow grasshopper {Xiphidium strictum Scud.); 

 (after Forbes). 



twice natural size 



The onion-fly occurs in connection with the prairie onion. Eris talis 

 tenax is common on the flowers. Various flower-flies occur. Waiting 

 in the flowers for such animals as may come are the ambush-bugs (Phy- 

 mata erosa fasciata), and the crab spiders (Misumessus asperatus and 

 Runcina ahatoria). The jumping spiders (Phidippus podagrosus) are 

 also predatory (138). The orb -weavers (Epeira trivittata, Agriope 

 trifasciata) build webs into which many insects fall. 



