Skip to main content
Log in

Biology of the Sorghum Earhead Bug, Calocoris Angustatus (Hemiptera: Miridae) with Description of Various Stages

  • Research Article
  • Published:
International Journal of Tropical Insect Science Aims and scope Submit manuscript

Abstract

Detailed biology of the sorghum earhead bug, Calocoris angustatus Lethierry was studied at Dharwad, India during 1979–1981. Egg incubation and nymphal developmental period ranged from 5.6–11.0 and 10.0–17.0 days, respectively. The duration of first, second, third, fourth and fifth nymphal instars was 2.2 to 3.4, 2.3 to 3.0, 2.0 to 2.8, 2.0 to 3.0 and 2.0 to 2.7 days, respectively. The males lived for 8.9 to 17.6 days and females for 12.2 to 21.3 days. Fecundity varied from 57.7 to 267.1 eggs per female. Preoviposition, oviposition and post oviposition periods varied from 1.2 to 2.1, from 7.2 to 14.0 and from 5.0 to 15.8 days, respectively. All the developmental stages of the bug are described.

Résumé

La biologie minutieux de Calocoris angustatus Lethierry était étudiée pendant 1979–1981, à Dharwad, Inde. La période d’incubation et de développement variait entre 5.59 et 11.00 et entre 10.00 et 17.00 jours respectivement. La durée de I, II, III, IV, et V nymphal instars était de 2.00 à 3.44, de 2.07 à 3.02, de 2.00 à 2.83, de 2.00 à 2.98 et de 2.00 à 2.71 jours respectivement. Les mâles ont vit pour 8.91 à 17.65 jours et les femelles pour 12.16 à 21.28 jours. La fécondité a changé de 57.7 à 267.1 oeufs par femelle. Les périodes de preoviposition d’oviposition et de post oviposition variaient entre 1.20 et 2.12, entre 7.23 et 15.00 et entre 4.96 et 15.79 jours respectivement. Toutes les étapes développabies de la punaise, comprenant genetalia du mâle et de la femelle sont décrits. Un clé a reconnaitre les différents instars de la nymphe et son sexe est aussi donné.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Ballard E. (1916) Calocoris angustatus Leth. Bull. Agric. Inst. No. 58, Pusa, p.8.

    Google Scholar 

  • Cherian M. C., Kylasam M. S. and Krishnamurthy P. S. (1914) Further studies on Calocoris angustatus Leth. Madras Agric. J. 29, 66–69.

    Google Scholar 

  • Gupta S. P. (1976) Statistical Methods. Sultan Chand and Sons, Delhi.

    Google Scholar 

  • Hiremath I. G. and Thontadarya T. S. (1984) Laboratory rearing apparatus of the sorghum earhead bug Calocoris angustatus Leth. (Hemiptera: Miridae). Curr. Res. XII, 142.

    Google Scholar 

  • Nagarajan K. R. and Edward J., S D. (1959) Control of Cholum earhead bug with BHC in Coimbatore. Plant Prot. Bull. 8, 12–13.

    Google Scholar 

  • Seshu Reddy K. V. and Davies J. C. (1979) Pests of Sorghum and Pearl Millet and Their Parasites and Predators, Recorded at ICRISAT Centre, India up to August 1979. ICRISAT, Hyderabad, p. 23.

    Google Scholar 

  • Thontadarya T. S. and Channabasavanna G. P. (1962) Mode of egg-laying in Helopeltis antonnii Sign. (Hemiptera: Miridae). Curr. Sci. 31, 339.

    Google Scholar 

  • Young W. R. and Teetes G. L. (1977) Sorghum Entomology. A. Rev. Entomol. 22, 193–218.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Hiremath, I.G., Viraktamath, C.A. Biology of the Sorghum Earhead Bug, Calocoris Angustatus (Hemiptera: Miridae) with Description of Various Stages. Int J Trop Insect Sci 13, 447–457 (1992). https://doi.org/10.1017/S1742758400013758

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1017/S1742758400013758

Key Words

Mots Clés

Navigation