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The Larval Instars of the Imported Fire Ant, Solenopsis invicta Buren (Hymenoptera: Formicidae)

Jerry O'Neal and George P. Markin
Journal of the Kansas Entomological Society
Vol. 48, No. 2 (Apr., 1975), pp. 141-151
Stable URL: http://www.jstor.org/stable/25082731
Page Count: 11
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Larval Instars of the Imported Fire Ant, Solenopsis invicta Buren (Hymenoptera: Formicidae)
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Abstract

Observations on ecdysis and head capsule measurements show that the larvae of Solenopsis invicta Buren undergo four instars. The mandible, labrum, labium, maxillary palp and galea are good characters for differentiating the instars but not the castes. Dyar's (1890) principle is valid for separating the instars of Solenopsis invicta.

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