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The present study was carried out between April-2017 and September-2018 in Mardin Province with the aim of determination of the species of family Dytiscidae (Predaceous diving beetles). A total of 1414 dytiscid specimens were collected from 34 different localities and identified. Totally 28 species in 14 genera of family Dytiscidae were recorded. All of the identified species were new records for Mardin province. [ABSTRACT FROM AUTHOR]

The study was conducted in three habitats representing different ecosystems (an area dominated by oaks, a grassland including several plants, and a stream bank) in Kasnak Mesesi Nature Reserve during 2005 and 2006 at 15-day intervals from April to October. Consequently, a total of 12 species were recorded from the habitats sampled, 9 from Carabidae and 3 from Tenebrionidae, by using the pitfall traps. The grassland including several plants was determined as the most diverse habitat according to Shannon and Simpson indices of diversity. Dailognatha quadricollis (Brullé) and Pimelia subglobosa (Pallas) were the most abundant species collected from all the three habitats in both study years with percentages of 45% and 24%, respectively. [ABSTRACT FROM AUTHOR]