70 XEW YORK STATE MUSEUM 



with eight small spots of dense fulvous or yellowish hair, ar- 

 ranged in pairs, the first and third nearer the suture, the third 

 pair being the largest; one or more pairs often obsolete, the 

 third pair being the most permanent : antennae black, annulated 

 with gray, first joint black. 



S. m o e s t a Lee. like p o p u 1 n e a : but the vestiture is a 

 uniform light gray without spots, and the lateral line on the 

 thorax only faintly shown. 



The punctulations on the intervals between the punctures are 

 more numerous than in p o p u 1 n e a . 



S. t u 1 a r i n. subsp. [pi. 7. fig. 6] like p o p u 1 n e a and 

 m o e s t a ; but the punctures, which are larger and deeper and 

 usually Avith an edge, are not so numerous as in the other two 

 species and seldom confluent : the intervals are densely punctu- 

 late as in c o n c o 1 o r . It is densely covered with red or fulvous 

 hair. Thorax with a stripe on side and a median band on top. 

 Types in collection of L. H. Joutel and National ^luseum^ 

 Washington. 



The above discriptions apply more particularly to the females. 



Distribution. S. p o p u 1 n e a , m o e s t a and t u 1 a r i . 

 \A'ith the material before us, it may be well to revise the distribu- 

 tion of these species, which have been confused. As stated, 

 m o e s t a does not occur on the Pacihc coast and so must be 

 dropped from the lists of that section. 



S. p o p u 1 n e a . Well marked examples have been seen from 

 Washington, Oregon, California, Spokane Wash, and Los Angeles 

 county, Cal. In Europe it feeds in poplar and willoAV stems forming' 

 galls. 



S. m o e s t a . Canada to AA'yoming, Idaho. ^Montana, Colo- 

 rado, Xew York, Wisconsin, Pennsylvania, Buftalo, Montreal^ 

 Toronto, Lake Superior. It feeds in balsam poplar. M o e s t a 

 has never been found in the vicinity of Xew York city to our 

 knowledge : and the one from Staten Island cited by Smith in 

 Insects of Xczi' Jersey, was probably c o n c o 1 o r . 



S. t u 1 a r i . Tulare county, Cal.. Yosemite Cal.. Arizona,. 

 Xevada. Oregon. AVashington. 



