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

***

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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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

***

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

Emoia cyanura (Lesson)

Coastal Blue-tailed Skink (Emoia cyanura)

Distribution:

Austral Islands: Raivavae, Rapa, Rimatara, Rurutu, Tubuai
Cook Islands: Nassau, Pukapuka, Rarotonga, Tongareva
Fiji: Taveuni, Viti Levu
Gambier Islands: Mangareva
Kiribati: Flint Island, Tabuaeran
Marquesas: Fatu Hiva, Hiva Oa, Mohotani, Nuku Hiva
Niue
Pitcairn Islands: Henderson Island, Oeno, Pitcairn Island
Samoa: Fanuatapu, ‘Upolu, Namu’a, Nu’ulua, Nu’utele, Ofu, Olosega, Tutuila
Society Islands: Huahine, Maupiha’a, Me’eti’a, Mo’orea, Tahiti
Tokelau: Atafu, Fakaofo, Nukunonu
Tonga: ‘Eua; Niuatoputapu; Lifuka (Ha’apai Islands); Tongatapu; ‘Euakafa, Kapa, Kenutu, Mafana, Maninita, Nuku, Pangaimotu, Taula, ‘Umuna, ‘Uta Vava’u, Vaka’eitu (Vava’u Islands)
Tuamotu Archipelago: Ahe, Anaa, Aratika, Fakarava, Hao, Katiu, Makemo, Manihi, Mataiva, Niau, Nihiru, Pukapuka, Rangiroa, Raraka, Raroia, Takaroa, Takume, Tureia
Tuvalu: Funafuti
Wallis & Futuna: Futuna, ‘Uvea

local names:

moko – Aitutaki, Miti’aro, Pukapuka, Tongareva / Cook Islands
moko kakara – Ma’uke / Cook Islands
moko sari – Fiji
motukutuku – Mangaia / Cook Islands

***

This ‘species’ in fact isn’t a species in the common sense, it is most probably not monophyletic, that means the species’ name covers more than one species.

The Polynesian populations extend from Fiji into central Polynesia (Cook Islands, Society Islands) and east Polynesia (Tuamotu Archipelago). The western populations may be native, the central and eastern, however, were most probably imported by early Polynesian settlers.

There is still a lot to discover …. [1][2][3][4][5]

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References:

[1] Walter C. Brown: Lizards of the genus Emoia (Scincidae) with observations on their evolution and biogeography. California Academy of Sciences 1991
[2] B. J. Gill: The land reptiles of Western Samoa. Journal of the Royal Society of new Zealand 23(2): 79-89. 1993
[3] B. J. Gill: Notes on the land reptiles of Wallis and futuna, South-West pacific. Records of the Auckland Institute and Museum 32: 55-61.1995
[4] Emilio M. Bruna; Robert N. Fisher; Ted J. Case: Morphological and genetic evolution appear decoupled in Pacific skinks (Squamata: Scincidae: Emoia). Proceedings of the Royal Society of London. B 263: 681-688. 1996
[5] Robert Fisher; Moeumu Uili; Czarina Lese; Fialelei Enoka: Reptiles of the Aleipata Islands: Surveys 2009–2010. In: Alan Tye, David J. Butler: Restoration of Nu’utele and Nu’ulua Islands (Aleipata Group), Samoa, through the management of introduced rats and ants. Conservation International Pacific Islands Program 2013

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emoia-cyanura-dpr

Photo: Dr. Paddy Ryan; by courtesy of Dr. Paddy Ryan

http://www.ryanphotographic.com

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edited: 01.01.2019