Skip to main content Accessibility help

Studies on the biology of Acanthomia tomentosicollis (Stål) (Hemiptera: Coreidae) in the field and insectary

  • R. I. Egwuatu (a1) and T. Ajibola Taylor (a1)


Studies on the biology of Acanthomia tomentosicollis (Stål) at Ibadan, Nigeria, showed that the periods of development in the field and the insectary averaged 17 and 18 days, respectively. The hemispherical, hexagonally sculptured eggs were laid in batches of 2.99 (mean=7 eggs per batch in the insectary and 20 in the field). Preoviposition periods were 11–22 days in unmated and 6–9 days in mated females. The mean number of eggs deposited by mated females (202) was significantly higher than that deposited by unmated females (135), although the average oviposition period of 16 weeks in unmated females was three weeks longer than in mated females. Unmated males and females were longer-lived than their mated counterparts, and females generally lived longer than males. These results and other observations on 'the biology of A. tomentosicollis are discussed in the context of its seasonal biology and the pattern of infestation of pigeon pea (Cajanus cajari), its main host plant.



Hide All
Aina, J. O.. (1970). Studies on the coreid pests of cowpea.— M.Sc. thesis, Univ. Ibadan,Nigeria.
Chiaromonte, A.. (1933). Acanthomia horrida.— Agricoltura colon. 27, 523529.
Doutt, R. L.. &Debach, P.. (1964). Some biological control concepts and questions. pp. 118 142 in Debach, P. (Ed.). Biological control of insect pests and weeds.—844 pp. London, Chapman and Hall.
Egwuatu, R. I.. (1975). Studies on the bionomics of Acanthomia tomentosicollis Stål (Hemiptera, Coreidae) and its egg-parasite Gryon gnidus Nixon (Hymenoptera, Scelionidae). — Ph.D. thesis, Univ. Ibadan, Nigeria.
Egwuatu, R. I.. &Taylor, Tajibola.. (in press). Effects of food and water on development, fecundity and longevity of Acanthomia tomentosicollis Stål (Hemiptera, Coreidae).— Ghana J. agric. Sci.
Fuller, C.. (1922). Report of the division of entomology for year ended 30th June, 1922.— J. Dep. Agric. Un. S. Afr. 5, 542545.
Jones, E. P.. (1937). The egg parasites of the cotton boll worm, Heliothis armigera Hubn.(obsoleta, Fabr.) in Southern Rhodesia.— Publs. Br. S. Afr Co. no. 6, 37106.
Materu, M. E. A.. (1968). The biology and bionomics of Acanthomia tomentosicollis Stål and A. horrida Germ. (Coreidae, Hemiptera) in Arusha area of Tanzania.— Ph.D.thesis, Univ. E. Africa, Nairobi.
Materu, M. E. A.. (1971). Population dynamics of Acanthomia spp. (Hemiptera, Coreidae) on beans and pigeon peas in the Arusha area of Tanzania.— E. Afri. agric. For. J. 36, 361383.
Materu, M. E. A.. &Kettle, D. S.. (1972). Laboratory observations on the bionomics of Acanthomia spp. (Hemiptera, Coreidae).— Misc. Rep. trop. Pesticides Res. Inst., Arusha, Tanzania, no. 804, 13 pp.
Taylor, T. A.. (1968). The effects of insecticide application on insect damage and the performance of cowpea in southern Nigeria.— Niger. Agric. J. 5, 2937.
Taylor, T. A.. (1975). Gryon gnidus, a scelionid egg-parasite of Acanthomia tomentosicollis (Hem.: Coreidae) in Nigeria.— Entomophaga 20, 129134.
Taylor, T. A.. &Omoniyi, O.. (1970). Variation in number of micropyles in eggs of Acanthomia tomentosicollis Stål (Hemiptera, Coreida).— Niger. Ent. Mag. 2, 7073.
Wigglesworth, V. B.. (1965). The principles of insect physiology.—6th edn, 741 pp. London, Methuen.

Studies on the biology of Acanthomia tomentosicollis (Stål) (Hemiptera: Coreidae) in the field and insectary

  • R. I. Egwuatu (a1) and T. Ajibola Taylor (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed