Descriptions of all active instars of a new species of Calyptostoma (Trombidiformes: Calyptostomatidae) from Iran.

The larva, deutonymph and adult of Calyptostoma seemani Masoumi & Saboori sp. nov. (Trombidiformes: Calyptostomatidae) are described from the Kandovan region, Alborz province, Iran. Larvae were reared from eggs laid by adults kept at room temperature in plastic pots. A key to larval and post-larval species of Calyptostoma of the world and corrections in the description of C. gorganica are presented. [ABSTRACT FROM AUTHOR]