MORPHOLOGICAL DESCRIPTION ON THE LARVA OF CTENOPH-THALMUS QU ADRATUS (SIPHONAPTERA:HYSTRICHOPSYLLIDAE)*

Abstract The paper deals with the morphology of the larva of Ctenophthalmus quadratus. It can be distinguished from Ctenophthalmus arvalis by the anterior part of the egg burster being longer, 1.6 to 1. 8 times as long as the posterior part, number of mandibular teeth and number of the setae of anal comb.