. Calosoma sycophanta : its life history, behavior, and successful colonization in New England. Gypsy moth; Browntail moth. 74 CALOSOMA SYCOPHAXTA. was covered with fine-mesh copper wire to provide air, while on the top a sliding cover was arranged so that the holes could be closed as they were filled. Ten of these units were strapped together and were convenient to carry, and the colony (200 larvae) which they contained could be liberated very rapidly by withdrawing the cover, inverting the unit, and giving it a sharp rap to shake out the insects. Table XIX shows the number of living beetles
. Calosoma sycophanta : its life history, behavior, and successful colonization in New England. Gypsy moth; Browntail moth. 74 CALOSOMA SYCOPHAXTA. was covered with fine-mesh copper wire to provide air, while on the top a sliding cover was arranged so that the holes could be closed as they were filled. Ten of these units were strapped together and were convenient to carry, and the colony (200 larvae) which they contained could be liberated very rapidly by withdrawing the cover, inverting the unit, and giving it a sharp rap to shake out the insects. Table XIX shows the number of living beetles imported and the number of beetles and larva? colonized since the work began. Table XIX.—Number of living Calosoma sycophanta imported: and number of beetles and larvae of Calosoma syeophanta colonized. Year. Re- ceived. Col- onized from importa- tions. Reared and col- onized. Adults. Larvae. 1900 093 907 675 405 1,305 3S9 578 430 250 1,064 1907 1908 - 2 300 1909 - 6 100 1910 452 6,380 Total 2,711 452 i ^0. Fig. 22.—Three "sets," each containing 10 units, each unit holding 20 Calosoma larva in separate cells, so that each set contains 200 Calosoma larvse or enough for a colony. (Original.) During 1906 and 1907 the number of Calosoma beetles liberated was comparatively small and the following two years only a moderate number was colonized. It should be borne in mind that the present condition as regards the abundance and dispersion of this species in the field is due to the colonies liberated during the first two or three years rather than to those which have been planted since that time. Attention should be called to the fact that nearly as many beetles. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Burgess, A. F. (Albert Franklin), 1873-. Washington, D. C. : U. S. Dept. of Agricult
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Keywords: ., bookcentury1900, bookdecade1910, booksubjec, booksubjectgypsymoth
