This paper is the second contribution in the series devoted to the study of camel spider fauna of Iran. New faunistic and distributional data are provided for northeast and east of the country. In total, 18 species, nine genera of five families are listed herein, of which four species Biton (Biton) rossicus (Birula, 1905), Galeodes turcmenicus Birula, 1937, Galeodopsis bilkjeviczi (Birula, 1907), and Rhagodes melanopygus Walter, 1889 are new to the fauna of Iran. As a result of this paper, the number of solifuges species in Iran is raised to 68. Moreover, corrections on some misidentifications of solifuges at zoological museums are presented, as well as available biological and ecological notes for most species. In addition, the illustrations of the studied species, including available type materials are given. Diurnal activity is reported for the first time for the species Galeodes fumigatus Walter,1889.
