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On the Effects produced by the Attacks of the Pink Bollworm on the Yield of Cotton Seed and Lint in Egypt

Published online by Cambridge University Press:  10 July 2009

L. H. Gough
L. H. Gough
Affiliation:
Director of the Entomological Section, Ministry of Agriculture, Egypt.
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Extract

The history of but few insects can be compared with that of Pectinophora (Geleckia) gossypiella, which, having started as a minor pest in its native country and having been transported by human agency to a new country, has there suddenly leapt to the most important position as a major pest of the crop it attacks. In this respect it may be placed with the Phylloxera and the gipsy moth.

Although the chief object of this paper is to consider certain aspects of the damage done by the pink bollworm to the cotton crop, the following short summary of the established facts concerning the life-history of the insect may be useful to readers not familiar with its habits.

Food-Plants. The pink bollworm feeds on cotton (Gossypium, various species), okra (Hibiscus esculentus ; Arabic : bamia ; Hindustani : bhindi), Deccan hemp (Hibiscus cannabinus ; Arabic : til), hollyhock (Althaea rosea), mallow (Malva sp., probably silvestris), Thespesia populnea (fide Fullaway ; this record is considered doubtful by Busck), and Abutilon sp. (Arabic : hanbuk ; fide King).

It will be noticed that all these plants belong to the Malvaceae. The record for pomegranates given by Dudgeon and Gough is without doubt due to error.

Of all these food-plants cotton is preferred. The larvae attack the stems (feeding in the cambium and boring a tunnel which encircles the stem), flowers, flower-buds, bolls and seeds.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 9 , Issue 4 , April 1919 , pp. 279 - 324
Copyright
Copyright © Cambridge University Press 1919

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