Persian Gulf. Saudi Arabia (Apel & Spiridonov 1998; Apel 2001), UAE (Nobili 1906a; Apel & Spiridonov 1998; Apel 2001), Iran (present study). Alcock (1899) recorded this species from the Persian Gulf without exact locality.
Iran. Hormozgan Province: Qeshm I. (Suza). Bushehr Province: Khalij-Nayband (Haleh).
General distribution. Western Indian Ocean: East Africa (Zanzibar), Red Sea, Gulf of Aden, Persian Gulf.
Habitat. Rocky/cobble intertidal to 10 m.
Remarks. Apel & Spiridonov (1998) believed that several records of T. admete (Alcock 1899; Stephenson 1976; Basson et al. 1977; Titgen 1982) from the Persian Gulf were most probably based upon misidentifications of T. savignyi. Thalamita savignyi is very closely related to T. admete, its sympatric congener in the Persian Gulf. Detailed taxonomic remarks distinguishing these two species have been provided by Apel & Spiridonov (1998: 270, tab. 4). They discussed on the distribution of the species in Indian Ocean and mentioned that the record of T. savignyi from the east coast of Africa and from Zanzibar by Nobili (1905a) is doubtful. An ongoing revision of the genus Thalamita is being performed by Vassily Spiridonov, which will hopefully resolve the taxonomic and distribution problems of these two species.