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Abstract
This technique for chromosomal preparation of ant tissues for karyotypic analysis is advantageous under field conditions because it reduces processing time and can be used under humid conditions. The cerebral ganglia from prepupae or early pupae are incubated 20 minutes in a hypotonic citrate solution, minced in a fixative solution of 3:3:4 glacial acetic acid: absolute methanol: distilled HOH, rinsed in a fixative solution of 1:1 glacial acetic acid: methanol followed by Carnoy's fixative, then immediately flame dried. The resulting metaphase chromosomes are well spaced and usually show banding characteristics.