A faunistic survey of tiger beetles (Coleoptera: Carabidae: Cicindelinae) in Chakrashila Wildlife Sanctuary and adjoining riverine ecosystem in Assam, India

摘要

A faunistic survey was made to assess the tiger beetle fauna from the Chakrashila Wildlife Sanctuary and adjacent rivers for the first time from the western part of Assam, India. A total of 15 species of tiger beetles (subfamily Cicindelinae) belonging to seven genera were recorded from forest, moist and dry riverine ecosystem using an occasional night trap. Eight species belonging to five genera were recorded from the riverine ecosystem. Two species, viz., Cylindera spinolae and Calochroa assamensis , were strictly restricted to the forest and Cosmodela virgula was recorded from both forest and riverine areas. Cylindera (Eugrapha) minuta , Calochroa flavomaculata , and Lophyra (Spilodia) vittigera were collected using a night trap from the forest area. The study revealed that habitat degradation due to human interference is the major threat to the tiger beetles in the study area. Author Biographies Head and Assistant Professor, Department of Zoology, Science College, Kokrajhar, Assam, India.