103 



Gibson (A.). A Little Known Cutworm, Euxoa excellens, Grt. — 

 Canadian Entomologist, London, Ont., xlix, no. 12, December 1917, 

 pp. 401-403. 



Since the first record of this pest in 1885, Euxoa excellens has been 

 abundant in certain years, doing serious damage to various growing 

 vegetables. In 1916 an outbreak was reported and investigated north 

 of Vancouver. The moths are on the wing in British Columbia in late 

 August and September. Nothing definite is known regarding the 

 early life-history of the insect ; from present knowledge it would 

 appear that the winter is passed in the egg-stage ; possibly during 

 certain seasons hibernation may also occur in the young larval stage. 

 From larvae collected in 1916, the Ichneumonids, Amhlyteles subfuscus, 

 Cress., and A. 7iuncius, Cress., were reared, while many of the larvae 

 were destroyed by the fungus, Sorosporella uvella. Poisoned bran was 

 used "^ith much success, 95 to 100 per cent, of the cutworms being 

 destroyed by this means. 



Malloch (J. K.). Key to the Subfamilies of Anthomyiidae. — Canadian 

 Entomologist, London, Ont., xlix, no. 12, December 1917, 

 pp. 406-408. 



The di^nsions of the subfamilies of Anthomyiidae adopted by the 

 author differ considerably from those of European authors, and are 

 based upon larval and pupal as well as imaginal characters. Separate 

 keys are given for the sexes. It is hoped to publish keys to the genera 

 of these subfamiHes shortly. 



Ross (W. A.). The Secondary Host of Myzus cerasi. — Canadian 

 Entomologist, London, Ont., xlix, no. 12, December 1917, p. 434. 



Recent literature dealing with Myzus cerasi (cherry aphis) shows a 

 considerable difference of opinion as to whether this Aphid is migratory, 

 but the observations of the author lead him to beheve that this is the 

 case. Apterous forms reside throughout the season on the primary 

 host (cherry) and in addition winged forms produced during the summer 

 migrate to a secondary host and there establish colonies. In Ontario 

 the favourite plant is apparently the -wild pepper-grass, Lejndinm 

 apetahim, to which M. cerasi is readily transferred from cherry. No 

 doubt other crucifers serve as summer hosts, and in insectary 

 experiments colonies of M. cerasi have been successfully established on 

 Capsella bursa-pastoris, Brassica arvensis and Erysimum cheiranthoides, 

 but these results have not as yet been verified in the field. 



Van Zwaluwenbueg (R. H.). Insects affecting Coffee in Porto Rico. 



— Jl. Econ. Entom., Concord, N.H., x, no. 6, December 1917, 

 pp. 513-517. 



Although coffee has been cultivated in Porto Rico for about 150 

 years, and ranks second in importance only to sugar-cane, little 

 attention has been given to the insects affecting it. The present paper 

 is a summary of the studies of the late Dr. C. W. Hooker, which 

 extended over a number of years, and of the observations of the author. 



