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Scientific name: |
Coenobita
spinosus |
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Chinese name: |
刺足陸寄居蟹
(This name is just translated by me form
Japanese) |
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English name: |
Spinner/Spinies |
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Japanese name: |
オオトゲオカヤドカリ |
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Max length of front part (head) of cephalothorax: |
According to the
report <Recent topics on taxonomy of hermit crabs from
Japanese waters - Family Coenobitidae> by Akira Asakura /
Natural History Museum and Institute, Chiba, the size of
this species belong to large-sized, may be
similar to Coenobita Brevimanus (left of the below photo).
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Distribution: |
West Pacific Ocean、
Northern Mariana Island
of
Micronesia、Tuamotu
Island |
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Habitat: |
unkown |
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Chirping: |
unkown |
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Favorite Shell: |
unkown |
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*Remark |
According to the
report <Recent topics on taxonomy of hermit crabs from
Japanese waters - Family Coenobitidae> by Akira Asakura /
Natural History Museum and Institute, Chiba,
there is 1 famale specimen of C. spinosus in Osaka Museum of
Natural History which was collected in from Hahajima in
Ogasawara, Japan. Mr. Akira Asakura had also gone to Paris
Museum of Natural History, France to compare the specimen
and confimred 2 specimens were the same species. |
The following information quote
from the report <Recent topics on taxonomy of hermit crabs from
Japanese waters - Family Coenobitidae> by Akira Asakura /
Natural History Museum and Institute, Chiba, for reference only.
I had also asked Mr. Akira Asakura about this species, and he
also think that the following photos are C. spinosus.
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Body colour from dark purple, claret to red beans colour.
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Eyes are
elongated in shape.
Eyestalks
are short.
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Left claw is a little bit larger than right claw. Both claws
with many corneous
thorns.
There are no ridge (////) on the upper part of the big claw.
There are some hair on the inside part of 2 claws. Dactylus,
carpus and propodus of both claws have many corneous thorns,
especially in the inside part of dactylus.
There
are many corneous thorns
on walking legs.
The last 2 parts (dactylus & propodus) of their 3rd left walking leg is wider than
that of 2nd left walking leg, and the outer surface of The
last 2 parts of their 3rd left walking leg
is bulging.
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A:
2nd left walking leg
B:
3rd left walking leg |
According to the articles of Akira Asakura (Japan Natural
History Museum and Institute, Chiba) and Yukio Nakasone
(University of the Ryukyus), outer surface of propodus of
left
3rd leg not separated from dorsal surface by a well-marked
longitudinal crest.
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DRAW
by TONY |
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Abdomen is very short (Red
circle).
Just saw some photos and ound that this species usually live
in a small shell. Do not know if this is related to thier
short abdomen, i.e. even they cannot hide their whole body
indise the shell, there is no effect on them. (just my
opinion)
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I had also asked Mr. Akira Asakura
of Natural History Museum and
Institute, Chiba, about this species, and he
also think that the following photos are C. spinosus.
I think below photos are also C.
spinosus (Although
those photos have not recognized by Mr. Akira Asakura
of Natural History Museum and
Institute, Chiba)。It
is so stange that this species always wear a "shell" just
like a coconut.
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