- 期刊
- OpenAccess
Identity of two hermit crabs, Calcinus vachoni Forest, 1958, and Calcinus seurati Forest, 1951, from the coral reefs of Taiwan (Crustacea: Decapoda: Anomura)
兩種臺灣珊瑚礁產之硬殼寄居蟹類，瓦氏硬殼寄居蟹和塞氏硬殼寄居蟹（甲殼綱：十足目：異尾類）
摘要
Two Calcinus hermit crab species were collected from the coral reefs of Taiwan. Calcinus vachoni Forest, 1958, new to Taiwan, was collected under large rocks or on the branches of corals at about 0 to 3 m depth, while C. seurati Forest, 1951, was found on the high intertidal pool of the coral reefs. These two species are easily recognized by their apparent coloration (shown on the living color plates). Further discussion is made of the color variation of eyestalks of C. vachoni. Since the nomenclature of these two species adopted in some previous publications is misleading, we define their taxonomic status and delimit their distributions correctly.
並列摘要
本報告描述兩種臺灣海域珊瑚礁產的硬殼寄居蟹，分別是瓦式硬殼寄居蟹Calcinus vachoni Forest, 1958和塞氏硬殼寄居蟹Calcinus seurati Forest, 1951。這兩種寄居蟹都具有顯著的體色，很容易和其他種寄居蟹區分。瓦氏硬殼寄居蟹為臺灣新記錄種的寄居蟹，分布在低潮間帶岩石下方至深達3公尺的淺亞潮帶珊瑚枝上，全身為乳白或淡青色，無特殊斑紋，唯近眼柄基部有不同大小的黑色斑塊，但亦有無黑斑的個體。塞氏硬殼寄居蟹棲息在高潮間帶石灰岩潮池中，目前在臺灣海域的分布僅限於蘭嶼島上，大螯足乳白或灰青色，步足有棕綠色條紋，步足腕節有單一縱向條紋，長節則有斜向條紋；而近似種光螯硬殼寄居蟹Calcinus laevimanus（Randall, 1839）的步足腕節和長節均有數條縱向條紋。瓦氏硬殼寄居蟹常被誤認為塞氏硬殼寄居蟹，本報告除比較這兩種寄居蟹的外部形態特徵、體色和棲息場所之外，並討論其在動物地理學上的分布。