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International Journal of Tropical Insect Science (1)

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Selecting a character for identifying larval instars of the lepidopteran stemborers Sesamia calamistis Hampson (Noctuidae) and Eldana saccharina walker (Pyralidae) in maize
O. Bonato, F. Schulthess
Journal:

Insect Science and Its Application / Volume 18 / Issue 2 / June 1998

Published online by Cambridge University Press:

19 September 2011, pp. 101-103

Print publication:

June 1998
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In experiments to select a character for identifying larval instars in Sesamia calamistis and Eldana saccharina, body length, body width and head capsule width were measured in populations reared on artificial diet. Seven instars were found in S. calamistis and 5 in E. saccharina. For both species, body length was determined to be the best characteristic to distinguish instars because it was easy to measure and had the smallest error.