. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests -- Periodicals; Insects -- Ontario Periodicals. Fig. 38 represents this species very correctly ; it is black with a broad margin of pale yellow on each side, and stripes of the same colour across the front of the head and on both the front and hind margins of the thorax ; there is also an irregular yellow line cross- ing the wing covers near the tip. The under side is somewhat paler with reddish markings. Examples of this insect are often brought to us during the summer by persons who have found
. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests -- Periodicals; Insects -- Ontario Periodicals. Fig. 38 represents this species very correctly ; it is black with a broad margin of pale yellow on each side, and stripes of the same colour across the front of the head and on both the front and hind margins of the thorax ; there is also an irregular yellow line cross- ing the wing covers near the tip. The under side is somewhat paler with reddish markings. Examples of this insect are often brought to us during the summer by persons who have found them in tubs or barrels of water and who were puzzled to know how they could get there. Beneath their hard wing covers they have a large pair J-, of membranous wings, by the use of which they can fly with great I ease ; by this means they are enabled to travel from pond to pond in search of their pi'ey. When wishing to change their location they crawl out of the water (usually towards evening) either up some reed or other water plant, or to the margin of the pond, and suddenly open their wing covers, expand their wings and rise into the air almost perpendicularly to a great height. Their descent is nearly as sudden and direct, and they often, when descending, drop into the water with considerable force. It would appear that they are enabled to distinguish the water from a considerable height by its glassy surface, for sometimes they have been known to drop with violence upon glazed garden sash, which they had evidently mistaken for water. The female lays her eggs in the water, where they soon hatch into young larvae, pos- sessing the ferocious disposition and voracious appetite of their parents. The larvae grow rapidly, and when mature are about two inches long, with large flattened heads armed with sickle-like jaws, with which they seize other insects and hold them while they suck their juices ; they sometimes quickly snip oflT the tails of young tadpoles, and are known to att
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Keywords: ., bookauthorontariod, bookcentury1800, bookdecade1870, bookyear1879
