rilUYSO.MELID.E. 



509 



d 



Fig. 5061. 



ten or twelve days afterwards, while the third brood of beetles 



stays under ground all winter, and only emerges late in the 



following spring, just 



in time to lay its eggs 



upon the young po- 



tato leaves," which it 



devours to such an ex- 



tent as to sometimes 



almost cut off the en- 



tire crop in certain lo- 



calities. The Editors 



of the ' ' American En- 



tomologist," from whom we have quoted, enumerate and 



lignre various beetles, hemiptera, and a species of Tachina fly 



(Lydella doryphoraj Riley) which mostly prey upon the larv;e. 



Dr. II. Shinier shows, in the "American Naturalist," vol. iii, 



p. !>1, that a dry and hot summer is very unfavorable to Hie 



development of this insect, the pupae dying for want of suffi- 



cient moisture in the soil. The best remedy against its attacks 



is hand picking. 



A very closely allied species or variety, the D. jtuiH<i. (Jer- 

 mar (Fig. ^(JG 1 ), may be easily confounded with the other spe- 

 cies, but differs, according to AValsh, in the head 

 of the larva being paler, while in the beetle the third 

 and fourth stripe from the outside are united, where 

 they are distinct in the I). 10-lineata, and the legs 

 arc entirely pale yellow, with a dark spot on the 

 femora. It feeds on the wild potato, not eating 

 the cultivated species, and has always been an inhabitant of the 

 Western and Southern States. 



Chrysomela is an oval oblong genus, and its ally, Calligrapha, 

 is very convex, hemispherical ; the species are gaily spotted and 

 banded ; Calligrapha scalar ix Lee. is abundant on the alder. 

 The larva? (Fig. 506 2 , larva of C. Philadelphia Linn.) are 

 thick and fleshy, with a row of black spiracles along the side 

 of the body, and a dark prothoracic shield. 



Eumolpus auratus Fabr. is a shining, rich golden green bee- 

 tle, found on the dog's-bane. 



Chlamys is a little oblong, cubical, roughly shagreened, 



~' tir> ~- 



