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Title: Trapezia and Tetralia (Decapoda, Brachyura, Xanthidae) as Obligate Ectoparasites of Pocilloporid and Acroporid Corals 
Author: Knudsen, Jens W.
Date: 1967-01
Publisher: University of Hawai'i Press
Citation: Knudsen JW. 1967. Trapezia and Tetralia (Decapoda, Brachyura, Xanthidae) as obligate ectoparasites of pocilloporid and acroporid corals. Pac Sci 21(1): 51-57.
Abstract: The occurrence of marine invertebrates in
the branches of living and dead corals has long
been recognized. Two crab genera, Trapezia
and Tetralia, of the family Xanthidae are determined
by Garth (1964) as being obligate commensals
of the coral families Pocilloporidae and
Acroporidae, respectively. Crane (1947) lists
species of the genus Trapezia as being found
only in pocilloporid corals along the west coast
of tropical America. Miyake (1939), in listing
the Brachyura of Micronesia, records Trapezia
cymodoce as collected from Stylophora, a pocilloporid
coral. Garth 's original collecting techniques
used at Eniwetok Atoll, Marshall Islands,
were refined in his later collecting in July 1959,
at which time he segregated each collection of
coral by species to avoid mixing coral commensals
found therein.
ISSN: 0030-8870

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