FIELD BOOK OF INSECTS. 



roses; median brown stripe of each elytron more or less 

 divided by yellow) and similis (chiefly on ragweed; that 

 stripe merely notched on the outer side) have the pronotum 

 wholly brown; it is partly yellowish in prcecelsis (the median 

 brown spot on pronotum reaching the base) and in elegans 

 (this spot not reaching the base of the pronotum; chiefly 

 on Bidens and Ambrosia). Of those with irregular spots 

 on the elytra: the pronotum is wholly dark in philadelpliica 

 (suture pale but with, among other markings, a line each 

 side of it; chiefly on dogw r ood), in scalaris (sutural stripe 

 branched; a large crescentic shoulder-spot enclosing a 

 small dot, and, back of it, 6 or 8 small dots, on each elytron; 

 chiefly on elm and linden), and in rJwda (sutural stripe 

 branched; each shoulder-crescent usually enclosing two 

 spots; chiefly on hazel); the pronotum is yellow with 

 reddish-brown spots in multipunctata (chiefly on Crattzgus), 

 and olive-green or brown, with pale apical and side mar- 

 gins, in bigsbyana (on maple, willow, and alder). 



Galerucini 



The beetles of this tribe are usually more oblong and 

 have softer elytra than those previously considered (see 

 also p. 363). The head is exposed; the third antennal joint 

 usually smaller than the fourth ; hind femora not unusually 

 thick; hind tibiae usually without terminal spurs. The 

 following are the genera most likely to be noticed. 



One of the "usuallies, " above, was for 

 Galerucella 



this genus; the third joint of the antennas 



is longer than the fourth. The antennas are at least 

 half as long as the body; pronotum has a median and two 

 lateral impressions; front coxal cavities open behind; 

 tibiae ridged on the outer side and without terminal spurs; 

 first joint of hind tarsi not longer than the next two; tarsal 

 claws bifid in both sexes. There are about a dozen species 

 in New Jersey, for example, and different species, for 

 the most part, live on different plants but the one which 

 attracts attention is luteola, the Elm-leaf Beetle (Plate 

 LXXXI). Yes. It is another foreigner. Most injurious 

 species are immigrants; the principal reason for their 

 becoming injurious is that their special enemies, which 



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