. The Canadian entomologist. Insects; Entomology. THE CANADIAN ENTOMOLOGIST 181 Explanation of Plate V. Ccenagrion interrogatum (Selys). Fig. 1.—Male, dorsal view. Nipigon, Ont. Fig. 2.—Male, lateral view. Spruce Brook, Newfoundland. Fig. 3.—-Female, dorsal view. Nipigon, Ont. Fig. 4.—Female, lateral view. Nipigon, Ont. Fig. 5.—Male, abdominal appendages, dorsal view. Spruce Brook, Newfoundland. Fig. 6—Male abdominal appendages lateral view. Spruce Brook, Newfoundland. AN INSECT ENEMY OF THE FOUR-LINED LEAF-BUG {PCECILOCAPSUS LINEATUS FABR.) BY C. R. CROSBY AND ROBERT MATHESON, ITHACA, On
. The Canadian entomologist. Insects; Entomology. THE CANADIAN ENTOMOLOGIST 181 Explanation of Plate V. Ccenagrion interrogatum (Selys). Fig. 1.—Male, dorsal view. Nipigon, Ont. Fig. 2.—Male, lateral view. Spruce Brook, Newfoundland. Fig. 3.—-Female, dorsal view. Nipigon, Ont. Fig. 4.—Female, lateral view. Nipigon, Ont. Fig. 5.—Male, abdominal appendages, dorsal view. Spruce Brook, Newfoundland. Fig. 6—Male abdominal appendages lateral view. Spruce Brook, Newfoundland. AN INSECT ENEMY OF THE FOUR-LINED LEAF-BUG {PCECILOCAPSUS LINEATUS FABR.) BY C. R. CROSBY AND ROBERT MATHESON, ITHACA, On July 26, 1913, while examining some stems of Weigelia containing the eggs of the four-lined leaf-bug we discovered that the lower end of many of the eggs had been eaten into and the contents extracted by a small hymenopterous larva. The larva burrows through the pith until it reaches a row of eggs and then. Fig. 14.—Larvae of C. ovisugosus attacking eggs of the Four-lined Leaf-bug. proceeds to destroy them one after another until three or four eggs have been eaten (Fig. 14). Frequent y two larvse may attack the same row of eggs working from opposite ends and thus destroy the entire egg mass. From an examination of a large number of egg masses in this clump of Weigelia about 50%. were found to be attacked by this parasite. The larvffi reach maturity before cold weather but do not pupate until the following spring. In order to secure adults we collected a large number of egg masses on February 28, 1914, and found the small larva; snugly occupying cavities in the pith June, 1915. 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 Entomological Society of Canada (1863-1871); Entomological Society of Canada (1951- ); Entomological Society of Ontario. Ottawa [etc. ] Entomological Society of Canada [etc
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