. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. 274 ORDER DIPT ERA the mouth are separated by quite a period. Curtice claims to have found larvae at all points between these two positions. This cannot be purely accidental. More recently an Irish investigator has reached the conclusion that the larvae bore into the skin and migrate to the wall of the esophagus from which point they travel to the position under the skin of the back. The adults emerge in early sinnmer, in Texas as. Fig. 220.—Hypoderma Hneata: a, second stage
. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. 274 ORDER DIPT ERA the mouth are separated by quite a period. Curtice claims to have found larvae at all points between these two positions. This cannot be purely accidental. More recently an Irish investigator has reached the conclusion that the larvae bore into the skin and migrate to the wall of the esophagus from which point they travel to the position under the skin of the back. The adults emerge in early sinnmer, in Texas as. Fig. 220.—Hypoderma Hneata: a, second stage of larva from back; b and c, enlargement of extremities: d. ventral view of third stage with details of extremities at e and /; g, dorsal view of mature larva with enlarge- ments of anal spiracles at h; i, the same, lateral view. Natural size indi- cated by side lines. (From Insect Life.) early as May, in northern States May or Jime. The larvse are pretty well grown by February, and by early ]\Iarch they have practically reached maturity and the grubs issue during March and early April, drop into the ground and pupate and remain in this stage for five, six,, or seven weeks, and the adults come on from ^lay to early June or the first of July. The European species which has now been studied with. 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
