Abstract
During a survey in Kermanshah province, western Iran, seven species of mites of the genus Tydeus (Acari: Prostigmata: Tydeidae) were collected from 2006 to 2013. Tydeus helenipanoue Kazmierski, 1998 is recorded for the first time in Iran. Tydeus californicus (Banks, 1904), T. electus Kuznetzov 1973, T. inclutus Livshitz, 1973, T. kochi Oudemans, 1928 and T. mississippiensis Baker 1970 are new for the fauna of this province. Previously invalidated T. caudatus is herein revalidated. Several new hosts for these species have been recorded, diagnoses for T. caudatus and T. helenipanoue proposed, and an identification key is provided for all these species. A list of previously recorded mites of genus Tydeus from Iran until 2015 is also added.
Highlights
The family Tydeidae (Trombidiformes: Prostigmata) is a large and taxonomically complex family with a worldwide distribution (Krantz 1978)
Tydeus californicus has been reported by Fleschner and Arakawa (1953) and Hernandes et al (2006) feeding on plants
The species T. electus and T. caudatus were the most abundant Tydeus species collected in the Kermanshah province
Summary
The family Tydeidae (Trombidiformes: Prostigmata) is a large and taxonomically complex family with a worldwide distribution (Krantz 1978) These species are fast moving small soft-bodied mites with color ranged from white, yellow, green and orange to black, about 0.25 - 0.5 mm in length. Tydeus californicus has been reported by Fleschner and Arakawa (1953) and Hernandes et al (2006) feeding on plants. As fungivorus mites, they might play an important role in decreasing the impact of plant pathogens and as scavengers they are effective in cleaning the leaf surface. Several species are found associated with insects (Treat 1970) or harmful to human and domestic animals (Kazmierski 1998)
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