478 



Stearns (L. A.). Some recently recorded Parasites of the Oriental 

 Peach Moth. — Jl. Econ. Entom., Concord, N.H., xii, no. 4, 

 August 1919, pp. 347-348. 



In the course of investigations on the Oriental peach moth, Cydia 

 (Laspeyresia) molesta. Busck, an average of 35 per cent, of the larvae 

 and pupae were found to be parasitised. The parasites reared included 

 the Tachinid, Eazenillia variabilis, Coq., which was the only Dipterous 

 parasite secured. It probably attacks the larvae prior to pupating. 

 Macrocentrus sp., which also infests Cydia pomotieUa, attacks the 

 larvae and spins its cocoon within that of the host. A secondary 

 parasite, Dihrachys houcheanus, Ratz., was taken from cocoons of 

 Macrocentrus within which it had pupated. Rhogas platypterigis, 

 Ashm., Habrobracon gelechiae, Ashm., Eubadizon gracilis, Prov., 

 Gmiiozus sp. and Leucodesmia nigriventris, Gir., attack the larval 

 stage ; whereas Itoplectis conquisiior. Say, Pimplidea aequahs, Yvov., 

 and Phaeogenes {Centelerus) sp. attack the prepupal or pupal stages. 



Safro (V. I.). The Strength of Nicotine Solutions. — /'. Econ, 

 Entom., Concord, N.H., xii, no. 4, August 1919, pp. 349-351. 



It is pointed out that the only accurate method of judging the 

 nicotine content of nicotine solutions is to indicate also the specific 

 gravity of the solution. The inaccuracy of judging the strength 

 by odour, colour or percentage by weight, without taking into considera- 

 tion the specific gravity, is emphasised. In three commercial 

 preparations all labelled 40 per cent, nicotine, the weight of nicotine 

 per gallon varied from 2'97 lb. to 4 lb. 



Hart7ell (A.). European Elm Scale. — Jl. Econ. Entom., Concord, 

 N.H., xii, no. 4, August 1919, p. 351. 



Att^tion is drawn to the appearance of the European elm scale, 

 Gossyparia spuria, on American elm in Iowa. 



Felt (E. P.). European Corn Borer {Pyrauda nubilalis, Hubn.) 

 in New York. — Jl. Econ. Entom., Concord, N.H., xii, no. 4, August 

 1919, p. 351. 



Recent determinations have positively established the occurrence 

 of Pyrausta nubilalis, Hb., in New York State. In certain districts 

 what was thought to be the same pest has now been identified as 

 Pyrausta penitalis, Grote. 



Britton (W. E.). Corn Borer in Connecticut not the European 

 Species. — Jl. Econ. Entom., Concord, N.H., xii, no. 4, August 

 1919, p. 351. 



Adult moths reared from material collected in Connecticut in 

 March, and thought to be Pyrausta nubilalis, Hb. [see this Review, 

 Ser. A, vii, p. 284], have been now identified as P. penitalis, Grote. 



