Spiridonov V.A. 2016. Xiphonectes tuerkayi sp.n. from the Indian Ocean with notes on Xiphonectes longispinosus Dana, 1852 (Crustacea: Decapoda: Portunidae) // Arthropoda Selecta. Vol.25. No.4: 357–372 [in English].
P.P. Shirshov Institute of Oceanology of Russian Academy of Sciences, Nakhimovskiy Prospekt, 36, Moscow 117997, Russia. E-mail: email@example.com
KEY WORDS: Species complex, Xiphonectes, Portunus, revision, characters, sympatry, upper and lower subtidal zone, Red Sea, Bab al Mandab, Gulf of Aden, Arabian Sea.
ABSTRACT. The Xiphonectes longispinosus complex which has been a continuing problematic issue of the Portunidae taxonomy is partly revised on the basis of information on the extant type specimen of X. longispinosus and the material from several European museums. A female collected by the US Exploring Expedition (1838–1842) and deposited in the Museum of Comparative Zoology of the Harward University, the only remaining syntype of Amphitrite longi-spinosa Dana, 1852 is selected as a lectotype of this species. Two apparently different morphological forms belonging to the X. longispinosus complex were found in the Indian Ocean. One of them is considered as belonging to the intertidal — upper subtidal species X. longispinosus s.str., the other is described herein as X. tuerkayi sp.n. which occurs mostly on the shelf in the lower subtidal zone.