. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. 56 LOWER PTERYGOTA evening and early morning;-. They are seldom active during the bright part of the day. The egg-capsules are bean-shaped and contain 50 to 60 or more eggs packed closely together, and after being carried some time are probably slowly extruded, finally left in some crevice. The young hatch from the egg-capsules and for a time are somewhat gregarious and are inclined to cluster together in company with the adult. This ma}' be simply an incident of location, t
. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. 56 LOWER PTERYGOTA evening and early morning;-. They are seldom active during the bright part of the day. The egg-capsules are bean-shaped and contain 50 to 60 or more eggs packed closely together, and after being carried some time are probably slowly extruded, finally left in some crevice. The young hatch from the egg-capsules and for a time are somewhat gregarious and are inclined to cluster together in company with the adult. This ma}' be simply an incident of location, though. Fig. 22.—The oriental roach (Periplaneta orienfalis): a, female; h, male; c, side view of female; d, half-grown specimen—all natural size. (From Marlatt, Div. Ent., U. S. Dept. Ag.) it appears like maternal care. The young are similar to the adults in shape, much flattened, and much lighter in color, and the wing pads are scarcely visible. They grow by successive moults, and with each moult the wing pads increase in size, until in the final moult they acquire the full- sized wings of adults. The development of the nymphs goes on somewhat irregularly during the summer months. An introduced species, the Oriental cockroach {Periplanda. 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 Osborn, Herbert, 1856-1954. Philadelphia ; New York : Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectb, booksubjectinsects
