217 



Three generations of Eumicrosoma henefica, parasite of the chinch 

 bug [Blissus leucoptera], were reared in the cave and the life-cycle 

 coincided with that of the controls reared in the field insectary. Eggs 

 of the false wireworm and corn-ear worm [Heliothis obsoleta] hatched 

 in the same length of time as those in the insectar}'. The temperature 

 of the cave was practically constant at about 78°, the conditions 

 evidently approximating those encountered in the field by the subter- 

 ranean forms studied. 



Zappe (M. p.). Egg-laying Habits of Diprion simile, Hartig. — Jl. 

 Econ. Entom., Cayicord,N.H., x, no. 1, February 1917, pp. 188-190. 



The method of oviposition of this sawfly is described and a list is 

 given of twelve species of Pinus on which the females laid their eggs. 

 A few eggs were laid on white spruce, but the preferred species is 

 P. excelsa. Parthenogenesis is common in this sa^vfiy, the females 

 apparently being entirely unaffected by the presence of the males. It 

 is not yet certain whether the adults reared from virgin females are all 

 males. Oviposition usually begins about one day after emergence from 

 the pupa, the adult females living about 7 days, while those which do 

 not o\nposit die in 4 or 5 days. Eggs are laid for preference in the 

 needles of the previous year's growth. There are two broods, which 

 hatch in early May and early August, the two sometimes overlapping. 



In the course of the discussion following this paper, Mr. K. L. Web- 

 ster stated that he had reared Harpiphorus tnaculatus from unfertilised 

 eggs, including one female, and Dr. 0. G. Hemtt recorded that he had 

 reared both sexes of the larch sawfly, Lygaeonematus (Nematus) 

 erichsoni, from unfertilised eggs. 



IVIanter (J. A.). Notes on the Bean Weevil (Acanfhoscelides [Bruchis] 

 obtectus), Say — Jl. Econ. Entom., Concord, N.H., x, no. 1, February 

 1917, pp. 190-193. 



The larva of the bean weevil, Bruchus obtectus, always enters the 

 bean at a point where it is in contact with another bean or some other 

 object, the body of the larva being arched against this as an aid in 

 penetrating the hard coating of the bean. Where these conditions 

 are not present, the larva is apparently incapable of entering the bean. 

 The larval stage lasts from 27 to 54 days. The pupal cell is formed 

 just under the surface of the bean, part of the testa being eaten away 

 so that emergence of the adult is easy. Adults live about 10 or 12 

 days. Fumigation with carbon bisulphide is the common method of 

 control. The insects may also be killed by subjecting the beans to a 

 temperature of 132° F. for about an hour, the beans being spread out in 

 shallow trays. Cold storage or exposure to cold winter weather will 

 prevent the weevils from breeding. 



Davis (I. W.). The Present Status of the Gipsy and Brown-tail Moths 

 in Connecticut. — Jl. Econ. Entom., Concord, N.H., x, no. 1, 

 February 1917, pp. 193-195. 



The heaviest infestations of gipsy moth [Lynuintria dispar] in 

 Connecticut at the present time are in the north-eastern portion of the 

 State with small scattered colonies further south, though scouting work 



(Cse.*?) c 



