FIELD BOOK OF INSECTS. 



The remainder of the subfamilies have the abdominal 

 spiracles placed in two lines on each side, the front three 

 on the connecting membrane and the others on the ventral 

 segments. 



Of the four genera of Rutelinae (claws on each tarsus 

 unequal in size, the inner one much more slender than the 

 outer) to be mentioned here, Anomala and Strigoderma 

 have 9-jointed antennas, and mandibles, when closed, 

 covered by the clypeus; Pelidnota and Cotalpa have 10- 

 jointed antennas and the mandibles are usually visible 

 beyond the clypeus. The elytra of Anomala are convex, 

 not notched at the base, shallowly striate, and with small 

 holes (punctate); the thorax is not hairy. The elytra of 

 Strigoderma are flattened, notched at the base, deeply 

 striate but not punctate; the thorax is hairy and has 

 impressed lines. 



Cotalpa lanigera, the Goldsmith Beetle (Plate LXXXI), 

 is found on willow and poplar, occasionally on oak, and 

 at light. Its specific name refers to the whitish "wool" 

 on the under side. 



Pehdnota punctata is, by day, common on grape, drawing 

 the leaves together for shelter, and by night at lights. It 

 is dull reddish-brown or brownish-yellow above, with 

 spots as shown in Plate LXXX. The larvae live in decay- 

 ing stumps, especially of oak and hickory. 



Of our more common Dynastinas (claws on each tarsus 

 equal in size; front coxag transverse, not very prominent; 

 body usually convex above), Cyclocephala and Dyscinetus 

 have the head and pronotum plain; the others have at 

 least a ridge or a tubercle on one or the other or both. 

 The color of our species of Cyclocephala is brownish- 

 yellow; the mandibles are narrow and scarcely curved. 

 Our species are about .5 in. long. The color of Dyscinetus 

 trachypygus, our common species, is practically black; 

 the mandibles are broad, rounded on the outer side, and 

 curved. It is nearly .75 in. long and is found under 

 rubbish along the shores of the sea, lakes, and larger 

 streams, as well as at lights. Of the others: 



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