Studies on biology, morphology and karyotype of Chironomus stigmaterus Say (Chironomidae: Diptera) from Aurangabad (M.S.) India

Abstract

The present communication deals with the studies on morphological and a karyological features of Chironomus stigmaterus from Aurangabad district of Maharashtra. During the present study morphology of fourth instar larva, pupa and adult was explored. A larva of present specimen shows mentum with 12 teeth and caudolateral tubules at posterior abdominal region. Pupa is red in colour and exuviae type. In male the setation of tergites and sternites highly variable in size and numbers. Adult female is larger than of male. Polytene chromosome observed at 2n=8 in number. These are the thummi complex specimens. The chromosome AB and CD are submetacentric, EF with metacentric and chromosome G is telocentric.