Letter | Published:

Insecticide Resistance in the Cocoa Capsid, Distantiella theobroma (Dist.)

Naturevolume 199page1207 (1963) | Download Citation



THE first large-scale trials with γ-BHC against the cocoa capsids Sahlbergella singularis Hagl. and Distantiella theobroma (Dist.) in Ghana were made in 19541. The level of capsid control achieved, and the resultant crop yields of cocoa, were so outstanding that the use of this insecticide in recent years has been countrywide. Aldrin and endrin have also been used successfully and the control reported by Armstrong2 as having been obtained with amounts of insecticide as low as ½ oz. active ingredient (a.i.) per acre is ample evidence that capsid strains, tolerant or resistant to chlorinated hydrocarbon insecticides, were unknown in Ghana in 1961. Now, however, capsids resistant to γ-BHC have been found on a plot of Amelonado cocoa at Pankese Cocoa Station, near Nkawkaw.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Stapely, J. H., and Hammond, P. S., Emp. J. Exp. Agric., 27, 343 (1959).

  2. 2

    Armstrong, K. B., Rep. W. Afr. Cocoa Res. Inst., 42 (1959–60).

  3. 3

    Cotterell, G. S., Bull. Dep. Agric. Gold Coast, No. 3 (1926).

  4. 4

    Rep. W. Afr. Cocoa Res. Inst., 34 (1945–46), 34 (1946–47) and 44 (1947–48).

  5. 5

    Nicol, J., Quart. Rep. W. Afr. Cocoa Res. Inst., No. 14, 6 (1947) and No. 15, 5 (1948).

  6. 6

    Donald, R. G., Quart. Rep. W. Afr. Cocoa Res. Inst., No. 16, 5 (1948).

Download references

Author information

Author notes

    • J. A. DUNN

    Present address: National Vegetable Research Station, Wellesbourne, Warwick, England


  1. (Senior Entomologist) West African Cocoa Research Institute, Tafo, Akim, Ghana

    • J. A. DUNN


  1. Search for J. A. DUNN in:

About this article

Publication history

Issue Date



Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.