Species related to Coenobita carnescens Dana, 1851
Published on 4-April-2017
Published on 1-July-2017
Published on 14-July-2017
Published on 15-September-2017
Published on 5-January-2018
Published on 9-January-2019
Published on 15-March-2019
According to information from
Database, this species was accepted and may be found in French Polynesia. Joseph Poupin's
commentis that Coenobita carnescens could be in fact the juvenile form of C. perlatus according to the drawings provided by Dana.
Thank you to Joseph Poupin for the
drawing. We can see the specimen in the drawings (1855)
band on walking legs.
This drawing is black and white, we do not know the colour of transverse band.
Scientific name carnescens mean covered in white;
hoary, is it refer to the white body colour
band in gray tone on walking legs?
However, it is most likely that Coenobita pseudorugosus is merely a synonym or a variety of Coenobita rugosus,
and according to
the meaning of
It is possible
specimens is Coenobita carnescens, please see below some points.
1. This specimens can be found in Samoa, Cook Islands, French Polynesia, Tahuata. From the images, we can see not only individual, but also in group, so I guess they are well represented within these areas.
slightly different between both of them may be the colour of transverse band. Transverse band on both cheliped and walking legs of juvenile of Coenobita perlatus is in brownish-red colour. Shield of most of juvenile of Coenobita perlatus with brownish-red marks.
While shield of this specimens is usually in white, same as body colour.
3. Below image from Cook Islands show that juvenile on left hand side and adult on right hand side are same, with gray transverse band on both cheliped and walking legs.
It means that there is no different between juvenile and adult during the growth. Some individuals of juvenile of Coenobita perlatus are almost white or pale orange. As they grow larger, the red orange colour gradually appear.
4. I checked with Joseph Poupin that specimens collected in Tahuata did not do any DNA test to confirm if they are
actually Coenobita perlatus. Also, is male coxae of 5th legs same as Coenobita perlatus?
5. According to the information of < Poupin J., 1996. Crustacea Decapoda of French Polynesia (Astacidea, Palinuridea, Anomura, Brachyura) >, the distribution of this species is Tuamotu. Tuamotu Islands is a chain of islands and atolls in French Polynesia.
Images from Tuamotu:
6. This specimens also can be found in Vuvalu - Fuadatu Island & Tepuka Island, not only individual, but also in group.
Only found one article < The effect of isolation on the behavioral interaction of juvenile land hermit crab (Coenobitidae) from the Motus of Mo'orea French, Polynesia > reported that this speices as juveniles Coenobita perlatus.