Ontogenetic change of body color patterns in laboratory-raised juveniles of six terrestrial hermit crab species Author Hamasaki, Katsuyuki Author Tsuru, Takuma Author Sanda, Tetsuya Author Fujikawa, Shunsuke Author Dan, Shigeki Author Kitada, Shuichi text Zootaxa 2017 4226 4 521 545 journal article 37246 10.11646/zootaxa.4226.4.5 241fa9c6-84dc-4be4-9318-3c120ac52671 1175-5326 265135 3EE63479-7793-42FB-BDC6-7602068C347A Coenobita cavipes The shield of the first stage crab ( 0.97–1.03 mm SL) has faint brownish pigments ( Fig. 7 A, B); they develop as two longitudinal brown bands/patches on the middle portion and a dark brown band at the anterior lower portion of each side wall of the whitish/creamy shield in juveniles with an SL of> 1.2 mm after one month of age ( Fig. 7 D–F, 8A–D, G). The ocular peduncle of the first stage crab has a brownish pigment area ventrally ( Fig. 7 C), and it gradually develops to a dark brown color after one month of age ( Fig. 8 E). The ocular acicles and the upper edge of the shield exhibit a brown color in juveniles with an SL of> 1.3 mm after two months of age ( Fig. 7 F, 8A). The second and third pereiopods of the first stage crabs are reddish brown, excluding the distal and proximal parts of each segment; they appear to have whitish rings at the boundaries between segments ( Fig. 7 A, B). The palm of the left cheliped begins to develop brownish pigment areas on the upper and lower parts after one month of age ( Fig. 7 D, E); specifically, the pigment on the lower part develops as a distinct large brown patch, and the palm appears to have a longitudinal white stripe on the middle portion ( Fig. 7 F, 8C, D, F, G). The brownish bands also develop on the carpi and meri of the chelipeds, and the bands of the pereiopods become dark brown ( Fig. 7 D–F, 8C, D, F, G).