LAMELLICORN-BEETLES. 91 



entirely black, and others have two broad diverging longitudinal 

 greenish bands upon the disk of the prothorax. The beetles can 

 be destroyed by means of Paris-green. 



A little larger species of this genus is the "Two-spotted 

 Anomala." (A. binotata Gyll.), which also varies considerably, 

 but can in most cases be recognized by two larger or smaller, 

 irregular black spots, one upon each wing-cover ; head and 

 thorax are uniformly polished black or dark-brown, always much 

 darker than the wing-covers ; the under side of the body is 

 colored like head and thorax. 



A much smaller species, the A. minuta Burm., is quite com- 

 mon in Minnesota. It varies even more than the two species al- 

 ready mentioned, some being entirely dark brown, others bright- 

 yellowish brown ; some possess no markings at all, others are 

 ornamented with small spots forming one or more bands across 

 the wing-covers ; while still others have numerous dark spots, 

 sometimes confluent, thus forming a narrow upper and broad 

 lower band across the elytra. 



Still other members of this genus occur in this state, but 

 are more abundant further south, where they sometimes cause 

 considerable injury to fruit-producing plants. The largest spe- 

 cies is A. marginata, Fab., a beetle much larger than those already 

 described, measuring about one-half an inch or more in length. 

 It is also brown, but with a peculiar green luster, especially if 

 seen from above. The darker prothorax is edged with a broad 

 margin of yellow. It is shown in Fig. 99. 



These beetles are harmless when they appear singly ; but 

 sometimes they occur like 'die Rose-beetle in large swarms, and 

 in such cases they riddle the foliage of the plants to such an 

 extent that it resembles a piece of net, and only the larger veins 

 are left undisturbed. The larvse live in the ground, feeding there 

 upon the roots of plants. As they cannot be reached in such 

 quarters we have to fight the beetles themselves, which is readily 

 accomplished by the use of arsenical poisons, by dusdng the vines 

 with fresh air-slaked lime, or by syringing them with a solu- 

 tion of whale-oil soap or strong tobacco water. 



