. Calosoma sycophanta : its life history, behavior, and successful colonization in New England. Gypsy moth; Browntail moth. EQUIPMENT FOR REARING BEETLES. 17 and larvae when nearly full grown can be fed in them if desired. The cages should not be disturbed until the following spring, and at that time the beetles which developed will come to the surface of the ground in the cage and can be easily removed. It is always necessary to provide hibernating quarters for beetles late in the summer, as they pass the winter in the adult state. Boxes of any desirable shape can be used for this purpose. Th
. Calosoma sycophanta : its life history, behavior, and successful colonization in New England. Gypsy moth; Browntail moth. EQUIPMENT FOR REARING BEETLES. 17 and larvae when nearly full grown can be fed in them if desired. The cages should not be disturbed until the following spring, and at that time the beetles which developed will come to the surface of the ground in the cage and can be easily removed. It is always necessary to provide hibernating quarters for beetles late in the summer, as they pass the winter in the adult state. Boxes of any desirable shape can be used for this purpose. They should be 18 to 24 inches deep, and the bottom should be replaced with gal- vanized iron wire netting, J-inch mesh. (See fig. 8.) They should be set in the ground and filled with earth within 4 to 6 inches of the top. A hinged cover on which the same kind of wire netting is used is a necessity, and the box should be supplied with a lock, so that its contents can not be disturbed by persons of an inquiring turn of Fig. 8.—Box cages for hibernation of Calosoma beetles. (Original.) We have also found it desirable to use, for hibernation cages, gal- vanized iron wire cylinders having a |-inch mesh, which are con- structed in the same manner as those used for feeding large larvae. (See figs. 9 and 10.) They are of special value for confining speci- mens during the winter which have been used for rearing or other special records. Cages similar to the last two types described were used late in the summer of 1909 for feeding large numbers of the larvae of sycophanta, but netting with a fine mesh had to be substi- tuted to prevent the escape of the small larvae. It should be stated that the use of these cages had been adopted after several years of experimental work. Many tests of different 100834°—Bui. 101—11 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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