. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 55. Another common form is Diplax herenice, (Fig. 45, male; Fig. 46, female). The ac- companying cut (Fig. 47.) the larva, probably of this species, accord- ing to Mr. Uhler. It is black, the head blue in front, .spotted with yellow, while the thorax and abdomen are striped with yellow. There are fewer stripes on the body of the male, which has only four large yellow spots on each side of the abdomen. Still another specimen is Diplax Elisa. It is black, with the head yellowish and with
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 55. Another common form is Diplax herenice, (Fig. 45, male; Fig. 46, female). The ac- companying cut (Fig. 47.) the larva, probably of this species, accord- ing to Mr. Uhler. It is black, the head blue in front, .spotted with yellow, while the thorax and abdomen are striped with yellow. There are fewer stripes on the body of the male, which has only four large yellow spots on each side of the abdomen. Still another specimen is Diplax Elisa. It is black, with the head yellowish and with greenish yellow spots on the sides of the thorax and base of the Fife'- 47. abdomen. There are three dusky spots on the front edge of each wing, and a large cloud at the base of the hind pair towards the hind angles of the wing. Rather a rare form, and of much smaller stature is the Nan- nophija bellii, (Fig. 48.) It was first detected in lialtimore, and was afterwards found uufrequently by a pond in Maine. Its abdomen is unusually short, and the reticulations of the wings are large and simple. The female is black, while the male is frosted over witl a whitish powder. In the allied genus Agrionina, there are many interesting insects ; we give an illustration in fig. 40. of one of the common, Agrinn smtcium. This insect is smaller in size than those we have previously mentioned. AlthdUgh in this country we rarely see Dragon-flies gathered in large numbers at one time, yet it is known that in some countries they not unfrequontly form uiimense swarms. In Kirby and Spence's En tomology we find the following :—" Meineckcn tells , that he once saw in a Village in .\nhalt, on a clear day, about fuur in the afternoon, such a cloud of Dm^oB-iies (Lihelluliiui) as almost concealed the sun, and not a little alarmed were the villagers, under the idea they were locusts ; several instances are given by Kosel, of similar clouds of these insects having been seen in Silesia and
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
