Spinning Behaviour of Two Species of Rice Leaffolders, Cnaphalocrocis Medinalis (Guenée) and Marasmia Patnalis Bradley (Lepidoptera: Pyralidae)

  • M. L. P. Abenes
  • Z. R. Khan


Two species of rice leaffolders, Cnaphalocrocis medinalis (Guenée) and Marasmia patnalis Bradley are usually found in association on rice plants in South and Southeast Asia. Larvae of the two species are similar in morphology, as is their feeding behaviour. Spinning, the process of stitching leaf margins together to form a leaf roll before the initiation of feeding process, is an important behaviour of leaffolder larvae. The spinning behaviour of two species of rice leaffolders was compared to find out if accurate differentiation between larvae of the two species is possible. The manner of spinning, average number of stitch bands made, average time spent to complete one band, order of spinning, number of turns taken by the larvae per band made, and feeding behaviour, while spinning a leaf roll were compared. The results revealed that the two leaffolder species have similar spinning behaviour.

Key Words

Rice leaffolders Cnaphalocrocis medinalis Marasmia patnalis spinning behaviour 


Deux espéces de tordeuses des feuilles, Cnaphalocrocis medinalis (Guenée) et Marasmia patnalis Bradley sont habituellement identifiqes en association avec des plantes de riz en Asie du Sud et Asie du Sud Est. Les larves de ces deux espéces sont identiques morphologiquement et en ce qui concerne leur comportement alimentaire. L’enroulement qui consiste à coudre les deux bordures d’une feuille avant que ne commence la consommation est un comportement important des tordeuses des feuilles. L’aptitude des larves des deux espéces à enrouler les feuilles est comparée afin de déterminer si elles peuvent étre différenciées par ce caractére. Le type d’enroulement, le nombre de coûtures, le temps moyen nécessaire a la confection d’une coûture, le nombre de rotations effectuées par la larve par coûture et le comportement alimentaire pendant l’enroulement sont comparés. Les résultats de montrent que les deux espéces de tordeuses des feuilles en ont un comportement similaire.


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  1. Barrion A. T., Medina E. B., Aguda R. M., Bandong J. B., Pantua P. C, Vega C. M., Viajante V. D., de la Cruz G. C., Soriano Jr. J. S., Camañag E. E. and Litsinger J. A. (1987) The rice Cnaphalocrocis and Marasmia (Lepidoptera: Pyralidae) leaffolder complex in the Philippines: Taxonomy, bionomics and control. Proceedings of XVIII Pest Control Council of the Philippines. Davao City, May 1987.Google Scholar
  2. Bradley J. D. (1981) Marasmia patnalis sp. n. (Lepidoptere: Pyralidae) on rice in southeast Asia. Bull. Entomol. Res. 71, 323–327.CrossRefGoogle Scholar
  3. Capco S. R. (1957) A list of plant pests of the Philippines with special reference to field crops, fruit trees and vegetables. Philip. J. Agric. 22, 3–80.Google Scholar
  4. Fraenkel G. and Fallil F. (1981) The spinning (stitching) behaviour of the rice leaffolder, Cnaphalocrocis medinalis. Entomol. Exp. Appl. 29, 138–146.CrossRefGoogle Scholar
  5. Fraenkel G., Fallu F. and Kumarasinghe K. S. (1981) The feeding behaviour of the rice leaffolder, Cnaphalocrocis medinalis. Entomol. Exp. Appl. 29, 147–161.CrossRefGoogle Scholar
  6. Joshi R. C. and Heinrichs E. A. (1986) A rice leaffolder, Marasmia patnalis Bradley: escaped attention of rice entomologists. Pesticides 20, 51.Google Scholar
  7. Khan Z. R., Barrion A. T., Litsinger J. A., Castilla N. P. and Joshi R. C. (1988) A bibliography of rice leaffolders (Lepidoptere: Pyralidae). Insect Sci. Applic. 9, 129–174.Google Scholar
  8. Klecka W. R. (1980) Discriminant Analysis. Sage University Press. Beverly Hills, California, USA.CrossRefGoogle Scholar
  9. Kushwaha K. S. and Singh R. (1984) Leaffolder (LF) outbreak in Haryana, India. Int. Rice Res. Newsl. 9, 20.Google Scholar
  10. Lim L. L. (1962) Biology of the rice leaffolder Cnaphalocrocis medinalis Guen. B.Sc. Thesis in Entomology, College of Agriculture, University of the Philippines, Philippines.Google Scholar
  11. Ramachandrain R. and Khan Z. R. (1991) Feeding site selection of first-instar larvae of Cnaphalocrocis medinalis (Guenée) on susceptible and resistant rice plants. Entomol. Exp. Appl. (in press).Google Scholar
  12. Ramasubaiah K., Rao P. S., Rao N. V. and Rao A. G. (1980) Nature of damage and control of rice leaf roller, Cnaphalocrocis medinalis Guen. Indian J. Entomol. 42, 214–217.Google Scholar
  13. Shepard B. M., Khan Z. R., Pathak M. D. and Heinrichs E. A. (1991) Management of insect pests of rice in Asia. In CRC Handbook of Pest Management in Agriculture (Edited by Pimentel D.), pp. 255–278, CRC Press, Florida.Google Scholar
  14. Waldbauer G. P. and Marciano A. P. (1979) Mass rearing of the rice leaffolder, Cnaphalocrocis medinalis Guenée (Lepidoptere: Pyralidae). J. Entomol. Res. 3, 1–8.Google Scholar

Copyright information

© ICIPE 1993

Authors and Affiliations

  • M. L. P. Abenes
    • 1
  • Z. R. Khan
    • 1
    • 2
  1. 1.The International Centre of Insect Physiology and Ecology (ICIPE)NairobiKenya
  2. 2.International Rice Research Institute (IRRI)ManilaPhilippines

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