Ocypode pallidula Hombron & Jacquinot

Common Ghost-Crab (Ocypode pallidula)

Distribution:

Austral Islands: Raivavae, Rurutu
Cook Islands: ‘Atiu, Aitutaki, Ma’uke, Mangaia, Manuae, Miti’aro, Nassau, Palmerston, Pukapuka, Rakahanga, Rarotonga, Tongareva
Gambier Islands: Aukena, Mangareva
Hawai’i Islands: Laysan, Midway, O’ahu
Norfolk Islands: Norfolk Island
Tuamotu Archipelago: Manihiki, Marutea (Sud), Moruroa, Raraka
Wallis & Futuna: Alofi

local names:

‘atike – Aitutaki / Cook Islands
kalami – Pukapuka / Cook Islands
kohiti – Rakahanga / Cook Islands
kohitihiti – Tongareva / Cook Islands
ko’iti – Rarotonga / Cook Islands
tike – Ma’uke / Cook Islands
tiketike – ‘Atiu, Miti’aro / Cook Islands
titorotai – Mangaia / Cook Islands

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The Common Ghost-Crab is indigenous in the Indo-Pacific region, where it can be found running about the beaches in search for food, and digging burrows in the sand.

It is a rather small species, reaching a carapace size of about 2,5 cm in diameter.

On the Cook Islands, where the species seems to be very common, it is known by several names, including ‘atike, kalami, kohiti, kohitihiti, ko’iti, tike, tiketike and titorotai.

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References:

[1] Katsushi Sakai; Michael Türkay: Revision of the genus Ocypode with the description of a new genus, Hoplocypode (Crustacea: Decapoda: Brachyura). Memoirs of the Queensland Museum 56(2): 665-793. 2013

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Photo: J. Poupin; by courtesy of J. Poupin

http://decpoda.ecole-navale.fr/index.php
http://decapoda.free.fr

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edited: 17.12.2018

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Coenobita perlatus H. Milne Edwards

Strawberry Hermit Land Crab (Coenobita perlatus)

This species is distributed throughout the whole tropical Indopacific region, from the coasts of Africa up to East Polynesia, where it can be found in large numbers especially on the atolls of the Tuamotu Archipelago.

The animals mostly stay close to the beaches, where they feed on all applicable things they can get, including seeds washed up to the beach or fallen coconuts, but also washed up fish and dead seabirds.

Strawberry Hermit Land Crabs prefer the shells of sea snails of the genus Turbo.

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References:

[1] Alden D. Hinckley: Ecology of Terrestrial Arthropods on the Tokelau Atolls. Atoll Research Bulletin 124: 1-18. 1969
[2] J. C. Yaldwyn; Kasimierz Wodzicki: Systematics and ecology of the land crabs (Decapoda: Coenobitidae, Grapsidae and Gecarcinidae) of the Tokelau Islands, Central Pacific. Atoll Research Bulletin 235: 1-59. 1979
[3] S. A. Hathaway; K. McEachern; R. N. Fisher: Terrestrial Forest Management Plan for Palmyra Atoll: U.S. Geological Survey Open-File Report 2011-1007, 78 p. 2011

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Photo: J. Poupin; by courtesy of J. Poupin

http://decapoda.ecole-navale.fr/index.php
http://decapoda.free.fr

Boerhavia tetrandra G. Forst.

Boerhavia tetrandra

Distribution:

Austral Islands: Maria, Raivavae, Rimatara, Tubuai
Cook Islands: Aitutaki, ‘Atiu, Manihiki, Manuae, Ma’uke, Miti’aro, Nassau, Palmerston, Pukapuka, Rakahanga, Rarotonga, Suwarrow, Takutea, Tongareva
Gambier Islands: Aukena, Gaioio, Kouaku, Mangareva, Tararua-Roa, Tauna, Tekava, Temoe, Totegegie, Vaiatekeue
Kiribati: Baker, Flint, Howland, Jarvis, Kiritimati, Nikumaroro, Orona, Palmyra, Tabuaeran, Teraina, Vostok
Pitcairn Islands: Henderson Island, Oeno, Pitcairn Island (?)
Samoa: Rose Atoll
Society Islands: Bora Bora, Huahine, Mai’ao, Manuae, Maupiha’a, Maupiti, Mo’orea, Motu One, Ra’iatea, Taha’a, Tahiti, Tetiaroa, Tupai
Tokelau: Atafu, Faka’ofo, Nukunonu, Olohega
Tuamotu Archipelago: Ahe, Ahunui, Anaa, Apataki, Arutua, Fakahina, Fakarava, Fangatau, Fangataufa, Hao, Hiti, Kauehi, Makatea, Manihi, Marutea Sud, Moruroa, Napuka, Niau, Nukutipipi, Paraoa, Rangiroa, Raraka, Raroia, Takapoto, Takaroa, Takume, Tatakoto, Tenarunga, Tepoto Nord, Tikehau, Tikei, Toau, Tureia, Vahanga, Vanavana
Tuvalu: Funafuti, Nui

local names:

katuri – Manihiki / Cook Islands
momoe – Nassau, Pukapuka / Cook Islands
naunau – Raraka / Cook Islands
runa – ‘Atiu / Cook Islands
tiale katuri – Tongareva / Cook Islands

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edited: 10.04.2019

Ocypode ceratophthalma (Pallas)

Horn-eyed Ghost-Crab (Ocypode ceratophthalma)

Distribution:

Cook Islands: Aitutaki, Pukapuka, Rakahanga, Rarotonga
Fiji: Kadavu, Makaluva, Viti Levu
Gambier Islands: Mangareva
Hawai’i Islands: O’ahu
Kiribati: Abariringa, Kiritimati, Palmyra, Tabuaeran
Marquesas: Eiao, Nuku Hiva
Norfolk Islands
Samoa: Tutuila, ‘Upolu
Society Islands: Bora Bora, Manuae, Mo’orea, Ra’iatea, Tahiti
Wallis & Futuna: Alofi, ‘Uvea
Tuamotu Archipelago: Fakarava, Makatea, Makemo, Marutea (Sud), Mataiva, Rangiroa, Raraka, Raroia, Taiaro, Takapoto, Tikehau

local names:

avi’ivi’i – Samoa
kalami wolomatua – Pukapuka / Cook Islands
kohite – Rakahanga / Cook Islands
pa’a – Samoa

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The Horn-eyed Ghost-Crab is indigenous to the Indo-Pacific, where it occurs from the coasts of East Africa far into Polynesia, where the animals run about the beaches in search for edible things, including washed up dead fish, or dead sea birds, but also newly hatched sea turtles.

It is a quite large species with a carapace size of up to 8 cm in diameter. It can be distinguished from other related crabs by the eyestalks extending beyond the eyes into long points, those stalks are longer in males, and shorter or almost absent in females.

In Samoa, the species is called avi’ivi’i resp. pa’a.

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References:

[1] Katsushi Sakai; Michael Türkay: Revision of the genus Ocypode with the description of a new genus, Hoplocypode (Crustacea: Decapoda: Brachyura). Memoirs of the Queensland Museum 56(2): 665-793. 2013

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Photo: J. Poupin; by courtesy of J. Poupin

http://decpoda.ecole-navale.fr/index.php
http://decapoda.free.fr

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edited: 19.12.2018