® Tree and Forestry Science and Biotechnology ©2010 Global Science Books Bioecology and Management of the Banana Skipper (Erionota thrax) Justin N. Okolle1,2* • Abu Hassan Ahmad1 • Mashhor Mansor1 1 School of Biological Sciences, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia 2 Laboratory of Nematology/Entomology, Centre Africain de Recherches sur Bananiers et Plantains (CARBAP), BP 832, Douala, Cameroon Corresponding author : *
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[email protected] ABSTRACT Bananas and plantains are important food crops to several people in the world. One of the most important folivorous insect pest on these crops is the banana skipper; Erionota thrax. The larvae of these large butterflies can cause mean leaf defoliation of about 60, leading to yield losses of about 20. Indigenous to Southeast Asia, life stages of the pest are attacked by several parasitoids of which Ooencyrtus erionotae, Cotesia erionotae and Brachymeria spp. are the major ones. Infestation and parasitism of the pest varies with plant growth stages, leaf ages, between interior and field edges, and seasons. Significantly higher infestation and parasitism found on pre-flowered plants, younger leaves and during the rainy season. In addition, eggs and larvae are randomly distributed while pupae are clumped and parasitized eggs and pupae are clumped while that of larvae is random. Although E. thrax has never been reported on non-Musa species or weeds, other smaller Erionota species have been recorded on Asystacia intrusa, Ipomoea cairica, Mimosa pudica