Study on morphometric changes in the successive larval stages of worker carpenter ant, Camponotus compressus (Hymenoptera: Formicidae)
Kadu Seema G
The worker carpenter ant, Camponotus compressus passes through the successive developmental stages like egg, larva, pupa and adult stages. The pre-adult stages were recognized as the five instar larval stages and four pupal stages as pre, early, mid and late pupae. The time period for pre-adult development under the natural conditions ranged from one to two months with variable size of head, thorax and abdomen. The young larvae were often partly transparent with small scattered white patches on external ridges of each segment of the integument. The mandibles of ant larvae were usually darker than the body, ranging from light amber to dark brown depending upon the degree of sclerotization, the darkness varying directly with the hardness. The larval body had tubercles varying greatly in size and length appearing in the form of stout hairs and could conceivably serve for defensive function. The head region protruded towards the ventral surface. The present investigation aimed at describing the mature worker larvae of this species in deeper detail, while identifying useful morphological characters for taxonomy andrncladistics.