Diving beetles (Coleoptera: Adephaga: Dytiscidae) of Namdapha National Park, Arunachal Pradesh, India Author Ghosh, Sujit Kumar text Records of the Zoological Survey of India 2018 2018-06-26 118 2 156 156 http://dx.doi.org/10.26515/rzsi/v118/i2/2018/119527 journal article 10.26515/rzsi/v118/i2/2018/119527 2581-8686 13183860 8. Hydaticus ricinus Wewalka, 1979 * Material examined : District Changlang , Namdapha , Vijaynagar , 21.xii.1984 , coll. S. Biswas , 01ex. (24166/ H4A); Gandhigram , 20.i.1985 , coll. S. Biswas , 02ex. (24167/H4A); 27.i.1987 , coll. S. Biswas, 14 ex. (24168/ H4A). Distribution : India : Arunachal Pradesh , Assam , Tamil Nadu ( Ghosh and Nilsson, 2012 ), Chhattisgarh (Ghosh et al , 2014), Himachal Pradesh (Ghosh and Hegde, 2013), Madhya Pradesh (Jaiswal et al ., 2014), Maharashtra (Ghosh, 2015). Elsewhere : Afghanistan , Bhutan , Myanmar , Nepal , Pakistan , Sri Lanka , China , Laos , Thailand and Vietnam ( Ghosh and Nilsson, 2012 ).