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Notes on the Tachinid Parasites of Cotton Stainers (Dysdercus spp., Pyrrhocoridae) in South Africa

Published online by Cambridge University Press:  10 July 2009

R. C. Rainey
R. C. Rainey
Affiliation:
Empire Cotton Growing Corporation, Barberton, Transvaal.
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Extract

(1) Up to 35 per cent, of adult Dysdercus nigrofasciatus from a heavily infested late cotton crop at Barberton were found to be parasitised by Tachinid larvae at the end of the season.

(2) The predominant Tachinid species was Alophora nasalis; Bogosilla fasciata was present in smaller numbers, and appears to be more common in regions of higher rainfall.

(3) The development of the Tachinid larva within the stainer was a protracted process under local winter conditions, the larval period of A. nasalis being of the order of 2–3 months, and parasitised stainers were correspondingly long-lived.

(4) The possible economic significance of the parasites is discussed.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 38 , Issue 2 , August 1947 , pp. 305 - 310
Copyright
Copyright © Cambridge University Press 1947

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