531 



Since the American form is distinct it has been necessary to ascertain 

 its correct name. Two species described by Walsh in 1862, A. cornicola 

 and A.fungicola, are the same species and identical with that common 

 upon Cornus. Fitch, however had described in 1858, Eriosoma querci 

 from oak in Illinois ; this description agrees fairly with the American 

 Anoecia upon Cornus, and four specimens from his collection confirm 

 this. Anoecia querci, Fitch, is therefore the correct name for this 

 species, 



Cowen in 1895 referred to A. querci, Fitch, a species found by him 

 upon oak in Colorado, and in 1911 Davis gave a more complete de- 

 scription and figures of this same species and placed it in Phyllaphis. 

 Davidson in 19iO also recorded the insect from California. Gillette 

 in 1914 renamed Cowen's species, P. quercifoliae and separated it from 

 the eastern one. Specimens collected by the author in Virginia prove 

 that the insect referred to by Davis, if not by Davidson, is a very 

 distinct species, for which PhyUafhis quercicola, n.n., is suggested. It 

 is, however, not a typical PhyUaphis. 



Other synonyms of A. querci include Phizohius eleusinis, Thos., 

 ScJiizoneura panicola, Thos., and probably Anoecia oenotherae, Wilson. 

 In Virginia the eggs of A. querci hatch about mid-April. By the end 

 of the month the stem-mothers are mature and are producing the 

 second generation, practically all of which become alate. The spring 

 migrants are in the pupal instar by about 6th May, and in another 

 three or four days migration begins and lasts until the first half of June, 

 a few insects becoming alate at a time. Alate as well as apterous forms 

 are produced during the summer upon the roots of various grasses. 

 At the end of September the return migration begins and extends 

 almost to the end of October. The sexual forms are deposited as the 

 alate forms arrive, so that fresh migrants and nearly mature sexes 

 occur upon the leaves at the same time. A few straggling migrants 

 are on the trees even after the eggs are being laid. The author was 

 unable to rear this species on the flowering dogwood, and could only 

 induce it to feed upon the narrow-leaved dogwood. A description is 

 given of the stem-mother, spring migrant, summer apterous, summer 

 alate and autumn migrant stages, and the paper closes with a 

 bibliography of 15 works. 



€hrystal(R.N.). Forest Insect Investigation in Stanley Park, Van- 

 couver, British Columbia. — Agric. Gaz. Canada, Ottaiva, vol. iii, 

 no. 9, September 1916, pp. 794-798, 3 figs. 



Chermes cooleyi (Sitka spruce gall aphis) is responsible for the death 

 of a large number of sitka spruce {Picea si(chensis) in Stanley Park. 

 Its life-history and migration to the Douglas fir [Psevdotsuga mucromta) 

 is described [see this Review, Ser. A, iv, p. 523]. Experimental sprajning 

 proves that it is readily controlled by contact insecticides. 



Dendroctonus obesus, Mann (Sitka spruce bark-beetle) was found in 

 isolated patches damaging trees already weakened by Chermes or 

 other causes. As many of the infested trees as possible were marked 

 for removal, the broods being thus destroyed and the outbreak 

 <?hecked. This beetle spread from 6 to more than 24 trees in 1914. 



Aphis abietina. Walk. (Sitka spruce green aphis) was found in con- 

 siderable numbers on the needles in early spring. Winged migrants 



