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ScAMMELL(H. B.). Amphiscepa hivittata, Say, in its Relation to Cran- 

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

 1917, pp. 552-556, 1 plate. 



These notes on the Fulgorid, Amphiscepa hivittata, Say, were made 

 in the course of investigations on cranberry insects in New Jersey. 

 Although this species is sometimes present on cranberry bogs in such 

 large numbers as to lead to the conclusion that the bugs are mainly 

 responsible for poor condition of the plants, it is found that as a matter 

 of fact the insect does but little damage, the injuries in most cases 

 being attributable to Rhabdopterns picipes, Oliv. (cranberry root- 

 worm), Cramhus Jiortuellus, Hb. (cranberry girdler), and Rhojjobota 

 vacciniana. Pack, (blackhead fireworm). In all cases where the plants 

 were in a vigorous, productive state, A. hivittata was rare, and therefore 

 cannot be considered of primary importance as a cranberry pest. 

 Besides cranberry, wild balsam, golden rod and other weeds and 

 herbage, as well as the swamp blueberry (Vaccinimn corymhosum), all 

 serve as food-plants. 



There is only one generation in a year, hibernation occurring in the 

 egg stage. The eggs are laid in living cranberry wood or in pieces of 

 dead wood, in a single row, each egg being inserted separately in the 

 pith of an upright or runner, the opening in the wood being then 

 closed with a tuft of fibre projecting above each slit. On dry bogs 

 hatching begins about mid-May, but the nymphs are few in number 

 until late June or July. There are five nymphal instars, the nymphal 

 period lasting until mid-autumn, during which time the insects suck 

 the juices from the woody parts of the cranberry plants. Adults 

 begin to appear in early August. 



A small spider was observed to carry off many nymphs from the 

 breeding-cage, and as spiders are numerous on the bogs they are 

 probably of considerable service in reducing the numbers of the bugs. 

 If infested cranberry bogs could be re-flooded during the summer, 

 the insects could easily be exterminated by applying the water for 

 24 hours, preferably during cloudy weather about 1st August, when 

 all the nymphs will have hatched and oviposition will not have begun. 

 A slight wind will blow the insects to one shore where they can be 

 killed with a kerosene torch. 



Peterson (A.). Studies on the Morphology and Susceptibility of the 

 Eggs of Aphis avenae, Fab., Aphis pomi, De Geer, and Aphis sorbi, 

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

 pp. 556-560. 



Observations on the morphological structure of the eggs of Aphis 

 avenue, A. pomi and A. sorhi, and the behaviour of the respective 

 coverings of these eggs during the hatching period shows that they 

 are not hard resistant bodies, but that they go through a critical 

 change previous to hatching, indicating that they are not as resistant 

 during these changes as in the dormant period. The susceptibility of 

 the egg and its lowered resistance near the time of hatching are further 

 shown by various experiments with differences in moisture and in the 

 use of certain contact insecticides and other chemicals. The outer, 

 brittle layer is somewhat impervious to water under ordinary 



