Borrodaile describes two variants of this species, as follows:
"i. var. typica, Alcock, III. p. 222.
Dark-brown specimens. Taken on the reef at Goidu, Goifurfehendu Atoll.
ii. Var. formosa Smith, 1869. {Proc Bost. Soc. N. H. Xil. p. 286.)
This variety differs so sharply from the dark-brown true digitalis that it seems to deserve a separate varietal name. In structure the variety is like digitalis, but it somewhat resembles T. J-erruginea in the shape of the front. This feature, however, varies considerably in digitalis. The earliest name for the orange-coloured form is formosa Smith. T. corallina Gerstaecker,
1856, is a coral-red crab."
(Borrodaile 1903)
Trapezia digitalis is een krabbensoort uit de familie van de Trapeziidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1828 door Latreille.
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指梯形蟹（学名：Trapezia digitalis）为梯形蟹属的动物。梯形蟹属舊屬扇蟹科，今屬梯形蟹科。分布于本种广泛地分布于整个印度-太平洋热带区以及中国大陆的西沙群岛、海南岛等地，生活环境为海水，多生活于珊瑚枝丛间。[1]
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