294 MAINE AGRicuivTURAi, e;xpe;rime;nt station. 1909. 



sen ted carefully the life history and habits of this species. The 

 figure of the gall Plate II in that paper is the characteristic 

 abietis gall and the wings on the same plate show the typical 

 curves of the veins of this species. The record of abietis from 

 Colorado (page 4 of Author's separata p, 92 in 34 Report) 

 however applies to Chermes cooleyi (See Gillette Chermes of 

 Colorado Conifers page 3) , and abieticolens of Packard and Thomas 

 is by error in that publication considered to be the same as 

 abietis. 



Chermes lariciatus Patch. 



A gall resembling that of abietis very closely in size and form 

 and found, like that of abietis, on white spruce was taken in 

 the vicinity of Orono by Mr. William Woods, July 28, 1909. 

 Fig. 141 shows two of these. 



The galls. Like the galls of abietis they are not terminal 

 on the twig and the tip of the twig extends out from their apex 

 when they encircle it, or along one side of the gall when they 

 do not, just as with abietis. 



The galls were mature on date of collection. The needles 

 of the gall are green at this season. Conspicuous wide russet 

 lines mark the closed mouths of the galls which gives the gall 

 a general russet color. The needles of the gall are much shorter 

 than is usual with abietis on the Norway and White spruces 

 and it is thus a little more pine-apple like in form than abietis. 

 Many of the galls were opening at the time they were collected, 

 and the pupae walk out from the open cells before they molt, 

 as do abietis. The galls become dry and brown soon after 

 they are vacated. The cells are not as shallow as those of abietis. 



The pupa. (Fig. 122). Described from forms just leaving 

 the gall before the last molt. Length of body 2 mm.; head, 

 prothorax and abdomen light reddish; thorax yellowish green; 

 wing pads dark green; ventral prothorax and thorax yellow- 

 ish green; legs and antennae greenish. The areas of wax pores 

 are well defined; head with anterior area between antennae, 

 and four posterior groups; prothorax with a large lateral area, 

 an anterial row of 4 groups, a posterior area of 2 groups, and a 

 broken line of 4 groups between the anterior and posterior 

 groups; mesothorax with a very large anterior lateral area 

 and a row of 4 groups across the middle of the segment; meta- 

 thorax with a very large lateral area about the size of that 



