. 
32 SOME INSECTS INJURIOUS TO TRUCK CROPS. 
A. spinosus. <A cluster of eggs was found in the loose soil at the base of a plant of 
Amaranthus spinosus. From a female confined at this date the following record was 
obtained: 
May 12, eggs deposited to the number of 49. 
May 16, eggs hatched. 
May 25, larvee burrowed into soil. 
May 27, first larvee pupated. 
June 1, first adults developed. 
June 2, adults left cells. . 
The periods were as follows: Egg stage, 4 days; larval stages, 11 days; pupal stage, 
5 days, or a total of 20 days from the time the eggs were deposited until the adults 
developed. 
The female which was confined May 10 deposited another cluster of 40 eggs on 
May 14 and died May 20. 
METHODS OF CONTROL. 
The remedies to be observed for this species naturally are practi- 
cally the same as for the related spinach flea-beetle. These consist 
in applications of the arsenicals, either arsenate of lead or Paris 
green, In accordance with the instructions given in Circular No. 87 on 
the Colorado potato beetle. In addition to spraying it is advisable 
to keep down the natural food plants of the species, especially purs- 
lane and chickweed, and to spray these also, as well as the beets and 
spinach, when the latter are affected. 
O 
