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The biology of Cryptolestes pusilloides (Steel & Howe) (Coleoptera, Cucujidae), a pest of stored cereals in the Southern Hemisphere

Published online by Cambridge University Press:  10 July 2009

L. P. Lefkovitch
L. P. Lefkovitch
Affiliation:
Agricultural Research Council, Pest Infestation Laboratory, Slough, Bucks.
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Extract

Cryptolestes pusilloides (Steel & Howe) has, since 1944, become a regularly occurring pest of stored cereals in South America, Australia, South Africa, and to a lesser extent, East Africa, and apparently occurs also in North America as well as in Portugal (where it has recently been found on stored almonds), but has not established itself in flour mills in the U.K., notwithstanding its frequent introduction. Prior to that time it appears to have been very rare. Its life-cycle resembles that of C. ugandae Steel & Howe, and in common with that species and with C. turcicus (Grouv.), it is unable to breed successfully at relative humidities below 50 per cent. Its temperature range is 15–35°C., the optimum for development and fecundity being at about 30°C. at 90 per cent. R.H. Survival was greatest at 27·5°C. and newly formed adults weighed most at 22·5°C. In general, males weighed more than females and their developmental period under any one set of conditions was slightly longer than that of females. The biological information now available shows that C. ferrugineus (Steph.) and C. capensis (Waltl), which are taxonomieally associated by exhibiting sexual dimorphism in the structure of the mandibles, are species that can withstand dry conditions, whereas C. ugandae, C. turcicus, C. pusillus (Schönh.) and C. pusilloides, all of which show sexual dimorphism in the antennae, are unable to breed at relative humidities much below 50 per cent.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 54 , Issue 4 , January 1964 , pp. 649 - 656
Copyright
Copyright © Cambridge University Press 1964

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References

Andrewartha, H. G. & Birch, L. C. (1954). The distribution and abundance of animals.—782 pp. Chicago, Ill., Univ. Chicago Pr.Google Scholar
Bishop, G. W. (1958). The taxonomy and bionomics of western Laemophloeus with special reference to the stored products species (Coleoptera-Cucu-jidae).—Ph.D. thesis, State Coll., Washington.Google Scholar
Howe, R. W. (1962). Observations on the rate of growth and disruption of moulting in the larvae and pupae of Tribolium castaneum (Herbst) (Coleoptera, Tenebrionidae) at sub-threshold temperatures.—Ent. exp. appl. 5 pp. 211–222.CrossRefGoogle Scholar
Howe, R. W. & Lefkovitch, L. P. (1957). The distribution of the storage species of Cryptolestes (Col., Cucujidae).—Bull. ent. Res. 48 pp. 795–809.CrossRefGoogle Scholar
Lefkovitch, L. P. (1957). The biology of Cryptolestes ugandae Steel & Howe (Coleoptera, Cucujidae), a pest of stored products in Africa.—Proc. zool. Soc. Lond. 128 pp. 419–429.CrossRefGoogle Scholar
Lefkovitch, L. P. (1959). A revision of the European Laemophloeinae (Coleoptera: Cucujidae).—Trans. R. ent. Soc. Lond. 111 pp. 95–118.CrossRefGoogle Scholar
Lefkovitch, L. P. (1962 a). The biology of Cryptolestes turcicus (Grouvelle) (Coleoptera: Cucujidae), a pest of stored and processed cereals.—Proc. zool. Soc. Lond. 138 pp. 23–35.CrossRefGoogle Scholar
Lefkovitch, L. P. (1962 b). The biology of Cryptolestes capensis (Waltl) (Coleoptera, Cucujidae).—Bull. ent. Res. 53 pp. 529–535.CrossRefGoogle Scholar
Lefkovitch, L. P. (1962 c). A revision of African Laemophloeinae (Coleoptera: Cucujidae).—Bull. Brit. Mus. (nat. Hist.) (Ent.) 12 pp. 165–245.Google Scholar
Reid, J. A. (1942). The species of Laemophloeus (Coleoptera: Cucujidae) occurring in stored foods in the British Isles.—Proc. R. ent. Soc. Lond. (A) 17 pp. 27–33.Google Scholar
Solomon, M. E. (1951). Control of humidity with potassium hydroxide, sulphuric acid, or other solutions.—Bull. ent. Res. 42 pp. 543–554.CrossRefGoogle Scholar
Solomon, M. E. & Adamson, B. E. (1955). The powers of survival of storage and domestic pests under winter conditions in Britain.—Bull. ent. Res. 46 pp. 311–355.CrossRefGoogle Scholar
Steel, W. O. & Howe, R. W. (1952). A new species of Laemophloeus (Col.: Cucujidae) associated with stored products.—Proc. R. ent. Soc. Lond. (B) 21 pp. 86–88.Google Scholar