Ng Peter K L
Tropical Marine Science Institute and Lee Kong Chian Natural History Museum, National University of Singapore, Kent Ridge, Singapore 119260, Republic of Singapore.; Email:
Zootaxa. 2014 Jun 12(3815):94-102. doi: 10.11646/zootaxa.3815.1.6.
A new genus and new species of eumedonine crab, Cebudonus poppeorum, is described from the central Philippines. Superficially similar to Eumedonus H. Milne Edwards, 1834, Gonatonotus White, 1847, Zebrida White, 1847, Zebridonus Chia, Ng & Castro, 1995, and Tiaramedon Chia & Ng, 1998, Cebudonus n. gen. is easily characterised by possessing two long pseudorostral spines, a gently convex and unarmed dorsal carapace surface, elongated chelipeds that have the chela and merus unarmed and not cristate, elongated and slender ambulatory legs in which the merus is not cristate, a relatively narrow anterior male thoracic sternum, and a proportionately broader male abdomen. The general structure and colour pattern (with longitudinal stripes) suggests Cebudonus n. gen. is an obligate symbiont with echinoids.
一种新的真螯蟹属螃蟹——波氏西布多蟹（Cebudonus poppeorum）在菲律宾中部被描述。西布多蟹属（Cebudonus n. gen.）表面上与1834年的真螯蟹属（Eumedonus H. Milne Edwards）、1847年的戈纳托蟹属（Gonatonotus White）、1847年的泽布瑞达蟹属（Zebrida White）、1995年的泽布瑞多蟹属（Zebridonus Chia, Ng & Castro）以及1998年的蒂亚拉梅多蟹属（Tiaramedon Chia & Ng）相似，其特征很容易识别，具有两根长长的假额棘、背甲表面呈平缓凸起且无武装、螯足细长，螯和长节无武装且无嵴、步足细长，长节无嵴、雄性胸部前侧胸骨相对较窄，以及雄性腹部相对较宽。其总体结构和颜色图案（有纵向条纹）表明西布多蟹属是海胆的专性共生体。
