Abstract
Nuclear Feulgen-DNA values were cytophotometrically evaluated in the various zones of the salivary glands of Bradysia spatitergum at the 1st and early 4th larval instar and prepupal stage. The smallest and largest duplication intervals for the Feulgen-DNA values, both ascribed to be provided by polytenization phenomena, were found in the S1 and S2 regions of the glands, respectively. They are possibly related with different secretion activities of these glandular regions.
