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International Journal of Tropical Insect Science (1)

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1 results

Larval instars determination for Chilo partellus Swinhoe (Lepidoptera: Pyralidae) reared on sorghum
Aliyageen M. Alghali
Journal:

Insect Science and Its Application / Volume 6 / Issue 6 / December 1985

Published online by Cambridge University Press:

19 September 2011, pp. 677-679

Print publication:

December 1985
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Larval instars of Chilo partellus Swinhoe reared on sorghum plants were determined. The larvae were separable into five non-overlapping instars by analysis of variance and Duncan's multiple range test, frequency distribution and scatter diagram of the head capsule widths. Head capsule increment from one instar to the next conformed to Dyar's rule, while at the same time agreeing with Richards' hypothesis. The stadial periods for the five instars were 6, 4, 5, 3 and 7 days, respectively.