. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests; Insects. 41 eye, above which (and within the ring) is a small oblique white line. There is also a minute white dot at the base of each antenna, with a large almost square one above it. The thorax is strongly roughened, with a triangular white patch enclosing a black dot on the shoulder, and two small spots on the back between the hinder pair of wings. The wings, four in number, are almost transparent, but have a very faint smoky tinge. The abdomen is jet black, with the exception of spots on eac
. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests; Insects. 41 eye, above which (and within the ring) is a small oblique white line. There is also a minute white dot at the base of each antenna, with a large almost square one above it. The thorax is strongly roughened, with a triangular white patch enclosing a black dot on the shoulder, and two small spots on the back between the hinder pair of wings. The wings, four in number, are almost transparent, but have a very faint smoky tinge. The abdomen is jet black, with the exception of spots on each side, varying in number from four to six, and in size from spots to semi-bands; that on the posterior segment being the longest. The ovipositor is contained in a flattened scabbard projecting only slightly beyond the tip of the body, as about two-thirds of it are concealed within the last segment which is grooved to receive it. The full length of the ovipositor is one-fifth to one-fourth of an inch. The male is slightly smaller than the female and more variable in colour, having the antennae generally black, but differs essentially only in the abdomen, which is more flattened and rounded at the tip—lacking of course the ovipositor. It is very much more rare than the female; ten of the latter being observed for one of the former. Having now sufficiently described the insects to ensure their recognition, there remains the consideration of their habits. The specimens mentioned at the beginning of this paper were taken on a tree which had recently died, and althoiigh one was in the act of ovipositing in the bark, no particular attention was given to the fact, as dead trees naturally become the prey of various species of insects, many of which may not attack them when living. A. few days later, however, I found a third female upon a living tree, and having an interest in the Uroceridje (to which group these insects belong), I determined to make further investigations concerning
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
