This is the eighth species of Land Hermit Crab in Indonesia. At first glance, the grey specimens look like Ruggies or Ecuadorians. Different from ruggies, these Indonesian
C.purpureus do not have visible or striking "stich mark" or ridge on the BP. The legs are also bigger/fatter than those of ruggies. They have weak yellow "ring" surrounding the eyes.
However, also different from Okinawan blueberries, the blue or purple tones are oftenly weaker ( perhaps due to different diet ) and many of them are in burgundy or brownish color.
My supplier ( a hermit crab exporter ) told me that he will soon make this species available in the U.S.market ( he will trade them with PPs ).