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Notes on the life history of Prospaltella perniciosi Tower: (b) The External anatomy of the squash bug, Anasa tristis DeG. (c) A New hymenopterous parasite on Aspidiotus perniciosus Comst. (d) The Mechanism of the mouth parts of the squash bug, Anasa tristis DeG /

The following notes were taken during the early spring, fall and winter of 1913, and the spring of 1914. This parasite, a description of which, both male and female, was published in the Ann. Ent. Soc. Am., vol. VI, No. I, pp. 125-126, is a true internal parasite, the larval forms living within the body tissues of its host, the female San Jose scale, Aspidiotus perniciosus Comst., except during the last part of the second larval stage as at this time the entire contents of the host are consumed by the larva, which, after passing its waste, pupates in the empty skin of the scale. Both male and female parasites emerge from the empty skins of second-stage and early third-stage female scales, but by far the largest number emerge from second-stage scales. The following description of the life cycle of the parasite, which has been worked out, is that of a parasite maturing in and emerging from a second stage scale. No doubt the development of those which emerge from third stage scales is the same.

Identiferoai:union.ndltd.org:UMASS/oai:scholarworks.umass.edu:theses-2357
Date01 January 1914
CreatorsTower, Daniel G.
PublisherScholarWorks@UMass Amherst
Source SetsUniversity of Massachusetts, Amherst
Detected LanguageEnglish
Typetext
Formatapplication/pdf
SourceMasters Theses 1911 - February 2014

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