Abstract
The present study deals with a small collection of diving beetles under the family Dytiscidae from different water bodies of Namdapha National Park, Arunachal Pradesh during 1982 to 1987. Till date, there is no published information available on this group from this national park even; the fauna of the state of Arunachal Pradesh has not been studied adequately. A total of 178 examples were studied for the first time which resulted in the identification of 10 species under 6 genera belonging to the 5 subfamilies of Dytiscidae. Out of ten species, 8 have been recorded for the first time from the state. The distribution of each species, recorded from the national park, in India is briefly summarized here.
Highlights
The current knowledge of the diving beetle fauna of the state of Arunachal Pradesh and North-east India have been very poorly investigated till date
As far as the diversity of aquatic beetles in the state of Arunachal Pradesh is concerned, few scattered publications are so far being made on the group
16 species of family Dytiscidae are known from the state (Ghosh and Nilsson, 2012; Ghosh and Sinha, 2016)
Summary
The current knowledge of the diving beetle fauna of the state of Arunachal Pradesh and North-east India have been very poorly investigated till date. Dr Biswas collected materials of various beetle families from different habitats and regions of the National Park. The Namdapha National Park is situated in Changlang district in Arunachal Pradesh of Northeast India and its international border with Myanmar. Platambus fletcheri Zimmermann, 1928* Subfamily COLYMBETINAE Genus Rhantus Dejean, 1833 3. Rhantus suturalis (W.S. Macleay, 1825)* Subfamily DYTISCINAE Genus Sandracottus Sharp, 1882 5.
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