322 



The eggs are laid between the sepals of the flower-buds or between the 

 folded leaves of the leaf -buds. They hatch in two days and the larvae 

 attack the buds causing them to dry up and die. On reaching maturity 

 after about 5 to 7 days, they drop to the ground and pupate in silken 

 cocoons. After 5 to 7 days the adults appear and very soon commence 

 oviposition, their life lasting only from 1 to 2 days. The total cycle 

 under greenhouse conditions is from 12 to 16 days. Larvae have been 

 seen in February but seem to be most abundant from May to July and 

 September to November. They hibernate in the cocoons. 



Experiments with various remedial measures have shown that 

 Neocerata rhodophaga may be kept in check by applications of tobacco 

 dust to the soil and persistent, nightly fumigation with tobacco. If 

 earthen walks are present, they should be sprayed with a 5 per cent, or 

 10 per cent, kerosene emulsion. One U.S. qt. of soft-soap or | lb. of fish- 

 oil or laundry soap are dissolved in one U.S. gal. of boiling soft water 

 to which 2 U.S. gals, of kerosene are added and stirred until a creamy 

 mixture is obtained. This may be diluted to a 10 per cent, solution 

 by the addition of 5| U.S. gals, of water. 



Weiss (H. B.) & Dickerson (E. L.). Insects of the Swamp Rose- 

 mallow, Hibiscus moscheutos, L., in New Jersey. — Jl. New York 

 Entom. Soc, Lancaster, Pa., xxvii, no. 1, March 1919, pp. 39-68, 

 3 plates. 



Hibiscus moscheutos is associated in New Jersey with the following 

 insects, the life-histories of which are dealt with at length : — Coleoptera: 

 Rhaeboscelis tenuis, Lee, Conotrachelus fissiunguis, Lee, Apion hibisci, 

 Fall, Bruchus hibisci, Oliv., and Chaetocnema quadricollis, Schwarz ; 

 Lepidoptera : Gelechia hibiscella, Busck, Tarache {Acontia) delecta, 

 Wlk., and Papaipema nebris, Gn. {nitela, Gn.) ; and a Cecidomyiid, 

 Neolasioptera hibisci, Felt. 



Haviland (M. D.). The Bionomics of Aphis grossuJariae, Kalt., and 

 Aphis viburni, Schr. — Proc. Canib. Phil. Soc, Cambridge, xix, no. 

 5, pp. 266-269. 



Aphis grossulariae, Kalt., is a serious pest of currant and gooseberry 

 bushes in Britain. It attacks the young shoots in May and when 

 abundant causes such distortion that growth ceases and a dense cluster 

 of leaves is formed, under which the Aphids swarm. Its life-history 

 is not fully known. It remains on currants until the middle or end of 

 July. The sexviales have never been found. Its resemblance to 

 A. viburni, found on guelder rose ( Viburnum opulus), is so close that there 

 appears to be no structural difference between the two species, though 

 with alcohol stains different properties have been observed. Experi- 

 ments were made to test how far these food-plants are interchangeable, 

 and the results of transference of A. viburni from Viburnum opulus to 

 Ribes rubrum and of A. viburtii, self- established on R. rubrmn, to 

 Viburnujn are shown in tables. In the first case only two colonies 

 survived for more than ten days, reproduction being very feeble and 

 never occurring beyond the third . generation ; an attempt to re- 

 transfer the third generation back from currant to guelder rose 



