Morphological and histological characteristics of the reproductive organs of adult male blister beetle, Mylabris indica (Thunberg) (Coleoptera: Meloidae)

Studies on morphological and histological aspects of reproductive system of male blister beetle, Mylabris indica revealed the presence of a pair of testes, each one composed of number of unbranched, testicular follicles with radial arrangement, yellow coloured globule like structure from which emerges a central common tube efferent duct that later joins forming a vasa derenentia. The seminal vesicles are dilations of the vasa derenentia and its lead to different duct. The different duct along with three pairs of accessory reproductive glands (core of single duct) opens into an ejaculatory duct. There are three types of glands in the reproductive apparatus. The first is a pair of short, curled, tubular ring, mesoderm derived tubules with long columnar epithelial cells, which contain yellowish secretory materials. The second type consists of long, coiled, tubular whitish gland, they are derived from mesodermal cells which is present whitish secretory materials in their lumen. The third pair is long, coiled, hyline tubular gland, (ectoderminal-derivation) contain transparent secretory materials.