Abstract
The chirostylid squat lobster, Chirostylus dolichopus Ortmann, 1892, was rediscovered from its type locality, Katsuyama (Boso Peninsula, Honshu, Japan) (35°06.7′N, 139°48.8′E), since the holotype had been collected in 1880. The colouration in life of C. dolichopus is reported for the first time on the basis of a recently captured topotypic specimen. Chirostylus dolichopus is characterized by the brilliant yellow ground colour and spot pattern on the meri of the ambulatory pereopods. The colouration in life of C. dolichopus is diagnostic for species of Chirostylus. The examination of the present specimen revealed that C. dolichopus is distinguishable from other shallow water congeners, such as C. ortmanni, C. sandyi, and C. stellaris, by the colouration as well as morphology.
Highlights
The chirostylid squat lobster, Chirostylus dolichopus Ortmann, 1892, was rediscovered from its type locality, Katsuyama (Boso Peninsula, Honshu, Japan) (35°06.7′N, 139°48.8′E), since the holotype had been collected in 1880
The colouration in life is diagnostic for species of Chirostylus, but was not recorded for the holotype of C. dolichopus
During a recent study on the shallow-water crustacean fauna of Boso Peninsula, we found the second specimen referable to C. dolichipus from Katsuyama
Summary
The chirostylid squat lobster, Chirostylus dolichopus Ortmann, 1892, was rediscovered from its type locality, Katsuyama (Boso Peninsula, Honshu, Japan) (35°06.7′N, 139°48.8′E), since the holotype had been collected in 1880. The colouration in life of C. dolichopus is reported for the first time on the basis of a recently captured topotypic specimen. The type species of the genus, C. dolichopus, was originally described from Kadsiyama (= Katsuyama), Boso Peninsula, Japan, and has hitherto been reported from wide but scatterred localities in the Indo-West Pacific (cf Baba et al, 2008). The colouration in life is diagnostic for species of Chirostylus (see Baba, 2009), but was not recorded for the holotype of C. dolichopus. The possible identities of specimens from other localities previously reported as C. dolichopus were briefly discussed
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