Entomology, Department of


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R. C. Joshi, T. Wada, E. A. Heinrichs. 1987. Host plants (except rice) of the rice leaffolder Cnaphalocrocis medinalis Guenée reported in literatures (1907-1983). Quarterly Newsletter 30 (1): 35-45. Asia and Pacific Plant Protection Commission, Regional Office for Asia and the Pacific (RAPA), Food and Agriculture Organization of the United Nations, Bangkok, Thailand.


The complex of rice leaffolder species, Cnaphalocrocis medinalis Guenee and Mararmia parnalis Bradley, hitheto considered as pests of minor importance, was observed by authors to cause severe damage to rice at the International Rice Research Institute, Philippines during 1983-84. It is significant to note that the damage symptoms for all leaffolder species are similar. In the past, the majority of the host plants reported for C. medinalis are based on field observation only (Table 1). Without rearing studies and subsequent taxonomic confinnation, it is possible that some of these records are due to the other less well-known leaffolders, Marasmia ruralis (Walker). Marasmia paenalis and Susumia exigua (Walker).

The purpose of this list is to help rice entomologists in their research on alternate hosts and studies on the carryover of different leaffolder species from the offseason to the rice cropping season.

The list of C. medinalis host plants is based on a review of selected literature from 1907 to 1983. Details on the host plants include their botanical name, common English name, family, location, and recorded observation(s) based on field or laboratory.

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