Habitat choice of Cordulegaster vanbrinkae in Iran (Odonata: Cordulegastridae)

摘要

The occurrence of Cordulegaster vanbrinkae was studied in Gnarl and Mazandaran provinces in northern Iran in July 2014. Ten localities demonstrated the occurrence of C. vanbrinkae at elevations from 169 to 1,424 m a.s.l. Larvae were found at seven localities and oviposition was observed at two localities. A total of 65 males, five females, 95 larvae, and 32 exuviae were found. Habitats were classified into the following types: a) narrow, shallow streams in forests at middle and higher altitudes; b) boulder-stepped shaded forest streams; c) deep cut forest streams with gravel banks, drying to intermittent pools; and d) broader sunlit rivers.