Biological and morphological studies of the leaf-rolling weevil, Apoderus notatus (Fabricius) [Coleoptera : Attelabidae]
1987
Saen Tigvanttnanont (King Mongkut's Inst. of Technology, Chaokhunthaharn Ladkrabang Campus, Bangkok (Thailand). Faculty of Agricultural Technology. Dept. of Plant production Technology)
The leaf-rolling weevil, Apoderus notatus (F) was a serious pest of mango and rose apple. The adults damaged young leaves by eating the chlorophyll. The morphological characters were antennae 11-segmented, not elbowed, terminally clubbed with 3 segments : beak short, widened distally; pronotum triangular shape, narrowed to apex and round laterally, : female front tibia with a small spur at inner margin but not a male; male with tuft of hairs at middle of the fourth and fifth abdominal sternites. The incubation period of egg, and the duration of larval and pupal stages averaged 4.49, 82.56 and 4.56 days respectively. The average from egg to adult was 91.61 day, and like span of male and female ranged from 36-41 and 44-52 days. The number of eggs oviposition throughout female life was 61.54. For oviposition, the young leaf was cut from one edge through the midrib. The female rolled the leaf longitudinally into a compact cylindrical shape without the aid of gum or silk. The process took from 90 to 120 minutes. One to three eggs were laid on each rolled leaf. The larva fed and pupaled within the rolled leaf, which remained moist. Besides the young leaves of mango and rose apple, the weevil fed on several hosts including Eugenia malaccensis L.,E. pauiala Roxb., Psidium quajava L., Terminalia catappa L., Shorea roxburghii G. Don, Lagerstroemia loudonii Teijsm. and Binn. and Bouca burmanica Griff.
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