70 . NEW 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 with 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. Toutel and National Museum, 

 Washington. 



The above discriptions apply more particularly to the females. 



Distribution. S. populnea, moesta and t u 1 a r i . 

 With the material before us, it may be well to revise the distribu- 

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

 moesta does not occur on the Pacific coast and so must be 

 dropped from the lists of that section. 



S. populnea. Well marked examples have been seen from 

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

 county, Cal. In Europe it) feeds in poplar and willow stems forming 

 galls. 



S. moesta. Canada to Wyoming, Idaho, Montana, Colo- 

 rado, New York, Wisconsin, Pennsylvania, Buffalo, Montreal, 

 Toronto, Lake Superior. It feeds in balsam poplar. Moesta 

 has never been found_ in the vicinity of New York city to our 

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

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



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

 Nevada, Oregon, Washington. 



