RECONSIDERATION OF THE METHOD TO MEASURE THE LARVAL INSTARS BY USE OF THE FREQUENCY DISTRIBUTION OF HEAD-CAPSULE WIDTHS OR LENGTHS
- 1 July 1971
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 103 (7) , 1011-1015
- https://doi.org/10.4039/ent1031011-7
Abstract
The number of molted head capsules of Pissodes nitidus is four, but the frequency distribution of the head-capsule widths and lengths of the weevil larvae do not always show four clear separations. It is necessary for more reliable determination about larval instars to count the molted head capsules in the larval gallery.Keywords
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