Burukovsky R.N. 2021. Shrimps of the family Rhynchocynetidae (Crustacea: Decapoda: Pleocyemata) of the Red Sea and Gulf of Aden, Indian Ocean // Arthropoda Selecta. Vol.30. No.4: 423–429 [in English].
Kaliningrad State Technical University, Kaliningrad 236035 Russia. E-mail: firstname.lastname@example.org
doi: 10.15298/arthsel. 30.4.01
ABSTRACT. Currently, three species of shrimps from the family Rhynchocinetidae Ortmann, 1890 (Crustacea: Decapoda: Pleocyemata) are known in the Red Sea. Two of them (Rhynchocinetes holthuisi Okuno, 1997 and Cinetorhynchus reticulatus Okuno, 1997) are common in shallow water along its eastern coast (Saudi Arabia) at depths from the low-water mark, but mainly at depths of 10–20 m. Their habitats are mainly associated with various shelters. At each of the stations where these shrimps were collected, only the representatives of one genus were found. It seems that R. holthuisi and C. reticulatus avoid each other for some reasons. The third species (Rhynchocinetes durbanensis Gordon, 1936) was found at the mouth to the Bab el-Mandeb Strait (Djibouti) in a bottom trawl catch at a depth of 26–29 m. It is the most northeastern locality of its Indo-West Pacific Ridge, and the closest area where it was previously discovered is Cape Guardafui (Somalia), the western part of the Gulf of Aden. The exact data of the capture site in the same bay of R. holthuisi are unknown, but the species is separated from R. durbanensis bathymetrically: the first species is usually found at a depth of 12–20 m, while the latter at a depth of 26–29 m.
KEY WORDS: Rhynchocinetes holthuisi, Rhynchocinetes durbanensis, Cinetorhynchus reticulatus, distribution, zoogeographical analysis.