Ostodes exasperatus Girardi

Large Ostodes Snail (Ostodes exasperatus)

This species was described in 1978.

The species is known from the islands of Savai’i and ‘Upolu, however, these two populations differ from each other in so far that the males from ‘Upolu are larger than the females, while the situation is reversed in Savai’i.

The shells reach a height of about 0,9 to 1,3 cm and a width of up to 1,3 cm. [1][2]

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References:

[1] E. L. Girardi: The Samoan land snail genus Ostodes (Mollusca: Prosobranchia: Poteriidae). The Veliger 20(3): 191-246. 1978
[2] Robert H. Cowie: Catalog of the nonmarine snails and slugs of the Samoan Islands. Bishop Museum Bulletin in Zoology 3. 1998

Hypolimnas bolina (L.)

Blue Moon Butterfly (Hypolimnas bolina)

The Blue Moon Butterfly, also known under the markedly ugly name Great Eggfly, was described in 1764.

The species has an exceptional wide area of distribution, which stretches from Madagascar over Asia and Australia into eastern Polynesia.

Three of the several subspecies occur within the Polynesian region, these are: Hypolimnas bolina ssp. otaheitae (Felder), which occurs on the Austral- and the Cook Islands, the Marquesas, the Society Islands, the Pitcairn Islands, and on Rapa Nui; Hypolimnas bolina ssp. pallescens (Butler), which is found in Fiji, in Tokelau, in Tonga, and in Samoa; Hypolimnas bolina ssp. rarik (Eschscholtz), which occurs in some parts of Kiribati as well as in Tuvalu. Another subspecies, Hypolimnas bolina ssp. nerina (Fabricius) is native to Australia and regularely visits New Zealand, but has not yet established a breeding population there, but probably will do so in time, and thus should be mentioned here too.

Males and females show a striking sexual dimorphism, males are always black with some white spots on the wings, which again are surrounded by a glossy dark blue ring. The females are much more variable in coloration, they furthermore produce several morphotypes, which, in appearance, often resemble other butterfly species, a phenomenon called mimicry.

The males are very territorial, while the females are wandering over wide ranges.

The larvae feed on plant species from the Acanthaceae, Amaranthaceae, Asteraceae, Malvaceae and the Urticaceae family.

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In Niue this butterfly is called pepe mahina lanu.

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References:

[1] R. H. Van Zwaluwenburg: The Insects of Canton Island. Proceedings of the Hawaiian Entomological Society 11(3): 300-312. 1943
[2] Alden D. Hinckley: Ecology of Terrestrial Arthropods on the Tokelau Atolls. Atoll Research Bulletin 124: 1-18. 1969
[3] Jaqueline Y. Miller; Lee D. Miller: The Butterflies of the Tonga Islands and Niue, Cook Islands, with the Descriptions of two new subspecies. Bishop Museum Occasional Papers 34: 1-24. 1993
[4] Brian Patrick; Hamish Patrick: Butterflies of Fiji. The Weta 24(1): 5-12. 2002
[5] Neal L. Evenhuis: Checklist of Fijian Lepidoptera. Bishop Museum Technical Report 38(13): 1-53. 2007
[6] Brian Patrick; Hamish Patrick: Butterflies of the South Pacific. Otago University Press 2012

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Photo: Antonio Machado; by courtesy of Antonio Machado

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edited: 18.08.2017

Sphenarches bilineatus Yano

Two-lined Feather Moth (Sphenarches bilineatus)

The Two-lined Feather Moth, which is closely related to the Indopacific Feather Moth (Sphenarches anisodactylus (Walker)), was described in the year 1963.

The species, which reaches a wingspan of about 1,5 cm, is occurs obviously exclusively in Samoa.

The biology of this species is hitherto completely unknown.

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References:

[1] Koji Yano: Notes on South Pacific Pterophoridae (Lepidoptera). Pacific Insects 5(4): 849-871. 1963
[2] Karin S. Kami; Scott E. Miller: Samoan Insects and related Arthropods: Checklist and Bibliography. Bishop Museum Technical Report 13. 1998

Platylepis heteromorpha Rchb. f.

Platylepis heteromorpha

Distribution:

Fiji
Samoa: Olosega, Savai’i, Ta’u, Tutuila, ‘Upolu

local names: –

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This species occurs on the Samoan Islands and probably on Fiji as well.

Fimbristylis cymosa R. Br.

Hurricane-Grass (Fimbristylis cymosa)

Distribution:

Austral Islands: Rimatara, Rurutu, Tubuai
Cook Islands: ‘Atiu, Mangaia, Manihiki, Manuae, Ma’uke, Miti’aro, Nassau, Palmerston, Pukapuka, Rakahanga, Rarotonga, Suwarrow, Tongareva
Fiji: Rotuma, Viti Levu
Gambier Islands: Mangareva, Taravai, Totegegie
Hawai’i Islands: French Frigate Shoals, Hawai’i, Kaua’i, Kure, Lana’i, Laysan, Lehua, Maui, Midway, Moloka’i, Ni’ihau, O’ahu
Kiribati: Abariringa, Baker Island, Enderbury Island, Jarvis Island, Kiritimati, Manra, Nikumaroro, Orona, Palmyra-Atoll, Tabuaeran, Teraina
Marquesas: Eiao, Ua Huka
Niue
Pitcairn Islands: Henderson Island
Samoa: ‘Aunu’u, Fanuatapu, Nu’ulua, Nu’utele, Ofu, Olosega, Savai’i, Ta’u, Tutuila
Society Islands: Bora Bora, Huahine, Maiao, Me’eti’a, Mo’orea, Ra’iatea, Taha’a, Tahiti, Tetiaroa, Tupai
Tokelau: Atafu, Fakaofo, Nukunonu, Olohega
Tonga: ‘Eua, Fafa, Fukave, Malinoa, Manima
Tuamotu Archipelago: Apataki, Hao, Makatea, Manihi, Niau, Rangiroa, Takapoto, Tenarunga, Tikehau, Toau
Tuvalu: Nui
Wallis & Futuna: Futuna, ‘Uvea

local name:

mati upoo – Tuamotu Archipelago
mauku – ‘Atiu, Manihiki, Rakahanga, Tongareva / Cook Islands
mau’u’aki’aki – Hawai’i Islands
mouku – Tuamotu Archipelago
kukuti – Tuamotu Archipelago
pako pako – Tahiti / Society Islands
papa ‘enua – Ma’uke / Cook Islands
pupu – Rotuma / Fiji
te uteute ni mane – Kiribati
tuise – Tokelau
tumu ‘enua – Palmerston / Cook Islands
uti’uti hu’a – Society Islands
vayavaya – Nassau, Pukapuka / Cook Islands

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Two of three accepted subspecies of this species are known to occur within the Polynesian region, Fimbristylis cymosa ssp. cymosa R. Br. and Fimbristylis cymosa ssp. umbellatocapitata (Hillebr.) T. Koyama.

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References:

[1] Albert C. Smith: Flora Vitiensis Nova: A new flora of Fiji (Spermatophytes only). Vol. 1. Lawai, Kauai, Hawaii 1979

Pteropus tonganus Quoy & Gaimard

Tongan Fruit-Bat (Pteropus tonganus)

The Tongan Fruit-Bat occurs with several subspecies in an area that stretches from New Guinea to the Cook Islands in Central Polynesia, whereby the form, that can be found in Polynesia, represents the nominate race.

These animals reach a wing span of more than one metre and spend the day more or less sleeping in roosting trees, where they sometimes form giant colonies.

In most parts of its geographic range the species is an important source of protein and is therefore heavily hunted, but also because the Fruit-Bats, being frugivores, can cause enormous damages in fruiting trees. Hence the species has become rare in some parts of its geographic range, in others it has even disappeared completely.

In the Kingdom of Tonga in contrast Tongan Fruit-Bats are considered as property of the royal family and therefore are protected from hunting – a very effective protection.

On the Cook Islands, the eastern most edge of its distribution area, the Tongan Fruit-Bat is called moa kirikiri, which means ‘leather chicken’. On the Fijian Islands it is called beka, bekua (in the west part of Viti Levu), beka dina or doli (on Kadavu).

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References:

[1] Jorge M. Palmeirim; Alan Champion; Alivereti Naikatini, Jone Niukula; Marika Tuiwawa; Martin Fisher; Mere Yabaki-Gounder; Sólveig Thorsteinsdóttir; Stanley Qalovaki; Thomas Dunn: Distribution, Status, and Conservation of Bats in the Fiji Islands. Oryx 41(4): 509-519. 2006

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

http://www.ryanphotographic.com

Boerhavia repens L.

Boerhavia repens

Distribution:

Hawai’i Islands: French Frigate Shoals, Hawai’i, Kaho’olawe, Kaua’i, Ka’ula, Kure, Lana’i, Laysan, Lehua, Lisianski, Maui, Midway, Moloka’i, Ni’ihau, O’ahu, Pearl and Hermes
Kiribati: Karoraina, Kiritimati, Malden Island, Starbuck Island, Vostok Island
Marquesas: Mohotani, Nuku Hiva, Ua Huka
Niue (?)
Samoa: Ofu, Olosega, Ta’u, Tutuila

local names:

alena – Hawai’i Islands
anena – Hawai’i Islands
nena – Hawai’i Islands
te wao – Kiribati

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Photo: Kim Starr & Forest Starr; by courtesy of Kim Starr & Forest Starr

http://www.starrenvironmental.com

Davallia brevipes Copel.

Davallia brevipes

Distribution:

Samoa: ‘Upolu

local names: –

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This species is known from the Samoan Islands from only a single collection, and otherwise occurs Southeast Asia and Melanesia. [1]

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References:

[1] H. P. Nooteboom: Notes on Davalliaceae II. A revision of the genus Davallia. Blumea 39: 151-214. 1994

Cheilanthes tenuifolia (Burm. f.) Sw.

Cheilanthes tenuifolia

Distribution:

Austral Islands: Raivavae, Rapa
Fiji: Viti Levu
Gambier Islands: Akamaru, Makaroa
Marquesas: Nuku Hiva
Samoa
Society Islands: Bora Bora, Mai’ao, Me’eti’a, Mo’orea, Ra’iatea, Tahiti

local names: –