. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 62 ENTOMOLOGICAL SOCIETY OF ONTARIO. THE EOCKY MOUNTAIN LOCUST AND ITS ALLIES IN CANADA. By Samuel H. Scudder. The genus Melanoplus, to which the Rocky Mountain Locust belongs, forms part of a small group of genera first definitely separated a few years ago by Brunner yon Wattenwyl under the name of Pezotettiges, but which, for reasons given in a technical memoir now in press, I have preferred to call after the dominant genus just men- tioned,—Melanopli. In the last resort, the Melanopli are separa
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 62 ENTOMOLOGICAL SOCIETY OF ONTARIO. THE EOCKY MOUNTAIN LOCUST AND ITS ALLIES IN CANADA. By Samuel H. Scudder. The genus Melanoplus, to which the Rocky Mountain Locust belongs, forms part of a small group of genera first definitely separated a few years ago by Brunner yon Wattenwyl under the name of Pezotettiges, but which, for reasons given in a technical memoir now in press, I have preferred to call after the dominant genus just men- tioned,—Melanopli. In the last resort, the Melanopli are separated from their nearest allies only by such an apparently insignificant matter as the number of spines (in itself variable) found on the outer margin of the hind tibiai; these, save for individual exceptions, often on one side of the body only, are always at least nine in number and rarely exceed fourteen. In the known Canadian species they range from eight to thirteen, but ten or eleven is the almost invariable number. The Melanopli are an almost exclusively American group comprising more than thirty genera of which oiily one, Podisma, occurs in the old world. They are primarily divided into two sections, dependent on the shape of the subgenital plate of the males, a division. Locust (magnified.) which broadly but not exactly separates the tropical or subtropical genera from those of the temperate regions, and leaves an almost equal number of genera in each section. Of the tropical section, as it may be called, but a single genus is known in Canada, Hypochlora ; its single species H. alba (Dodge) is reported by Brunner as occurring in Manitoba, and this is altogether probable as it ranges along the border in the United States from Minne- sota to Montana, but extends south only to Kansas and Colorado. It is a slender, hoary green, lon»-le»ged insect with abbreviated tegmina, and is partial to the white sage, Arlem- isia ludoviciana. Of the temperate section, only three of th
Size: 2437px × 1025px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
