. Annual report. Entomological Society of Ontario; Insect pests; Insects. Table II Average numbers of M. religiosa, Gryllidae, and other Orthoptera per square yard in a pasture near Chatterton, 1943 M. Other Total Date religiosa Gryllidae Orthoptera Orthoptera Aug. 18 Aug. 26 Sept. 3 Sept. 9 Sept. 23 The relative stability of the adult mantis population already noted was in marked contrast to the decreasing numbers of nymphs during the summer. This was particularly evident from samples taken in the flood-meadow a
. Annual report. Entomological Society of Ontario; Insect pests; Insects. Table II Average numbers of M. religiosa, Gryllidae, and other Orthoptera per square yard in a pasture near Chatterton, 1943 M. Other Total Date religiosa Gryllidae Orthoptera Orthoptera Aug. 18 Aug. 26 Sept. 3 Sept. 9 Sept. 23 The relative stability of the adult mantis population already noted was in marked contrast to the decreasing numbers of nymphs during the summer. This was particularly evident from samples taken in the flood-meadow and in a pasture at the Sidney Field Station in 1949. Though hatching was retarded somewhat in the meadow, nymphs were abundant in both fields in early June (Fig. 1). Their numbers soon decreased, however. At first, there were four to five times as many nymphs in the meadow as in the pasture, but their numbers decreased and during the ensuing 30 days this ratio lessened, and by August 11, when the nymphs had matured, there were approximately only twice as many. 5r-. JUNE JULY AUG. SEPT. Fig. 1. Average numbers of nymphs of M. religiosa per square yard in weekly samples from two fields near Chatterton, 1949. A variety of potential prey occurred in the samples. In the pasture, the larger specimens consisted of grasshoppers, crickets, muscids, and spiders, all of which became less common after July 6. In the meadow, plant bugs, and crickets (Nemobius spp.) were present during June; the latter were more numerous in July and were very abundant toward the end of August after the mantids had reached maturity. The numbers of oothecae in this field averaged per square Rep. ent. Soc. Ont. 89 (1958)—1959 54. 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 Ontario; Ontario. Dept. of Agricu
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