Ground Weta (Hemiandrus) – undescribed species

Ground Weta (Hemiandrus) – undescribed species

This New Zealand genus contains about 35 species, of which only some 15 appear to have been described so far, leaving about 20 species still undescribed. [1][3]

The ground weta are thought to be widespread and common, some are even found in urban gardens, however, some species of course are very restricted and are indeed threatened.

Some species are known to exhibit maternal care of eggs and offspring – the mothers take care for their eggs and their young. [2]

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Unfortunately I do not know which of the following tag-named forms were properly described in the meantime.:

Hemiandrus sp. “alius”
Hemiandrus sp. “disparalis”
Hemiandrus sp. “dodsons”
Hemiandrus sp. “elegans”
Hemiandrus sp. “Esperance Valley”
Hemiandrus sp. “evansae”
Hemiandrus sp. “furoviarius”
Hemiandrus sp. “hapuku”
Hemiandrus sp. “horomaka”
Hemiandrus sp. “Hunter Mountains”
Hemiandrus sp. “kapiti”
Hemiandrus sp. “madisylvestris”
Hemiandrus sp. “mtgeorge”
Hemiandrus sp. “nokomai”
Hemiandrus sp. “okiwi”
Hemiandrus sp. “onokis”
Hemiandrus sp. “otautau”
Hemiandrus sp. “otekauri”
Hemiandrus sp. “porters”
Hemiandrus sp. “promontorius”
Hemiandrus sp. “pureora 1”
Hemiandrus sp. “pureora 2”
Hemiandrus sp. “redhills”
Hemiandrus sp. “richmond”
Hemiandrus sp. “saxatilis”
Hemiandrus sp. “staveley”
Hemiandrus sp. “timaru”
Hemiandrus sp. “turgidulus”
Hemiandrus sp. “waimakariri”
Hemiandrus sp. “vicinus”

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References:

[1] P. M. Johns: Distribution and conservation status of ground weta, Hemiandrus species (Orthoptera: Anostostomatidae). Science for Conservation 180. 2001
[2] Tony Jewell: Two new species of Hemiandrus (Orthoptera: Anostostomatidae) from Fiordland National Park, New Zealand. Zootaxa 1542: 49-57. 2007
[3] B. L. Taylor Smith; M. Morgan-Richards & S. A. Trewick: New Zealand ground wētā (Anostostomatidae: Hemiandrus): descriptions of two species with notes on their biology. New Zealand Journal of Zoology 40(4): 314-329. 2013

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hemiandrus.sp.rudolph89

Hemiandrus sp.

Photo: Rudolph89

(This image is in the public domain.)

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edited: 06.03.2016

Hydrotetrix aspera Uvarov

Rough Water Pygmy Grasshopper (Hydrotetrix aspera)

The Rough Water Pygmy Grasshopper was described in 1926.

The species is known to inhabit wet places near streams, both on Mo’orea and Tahiti, Society Islands.

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Photo: Anne Duplouy
http://www.mooreabiocode.org

(under creative commons license (3.0))
http://creativecommons.org/licenses/by-nc-sa/3.0

Leptogryllus deceptor Perkins

Oahu Deceptor Bush Cricket (Leptogryllus deceptor)

This rather enigmatic species was described in the year 1910 from the island of O’ahu, Hawaiian Islands.

The whole genus seems to be only barely known and little investigated. But it is known, that related species (Leptogryllus fusconotatus Perkins from O’ahu, Leptogryllus nigrolineatus (Perkins) from Maui) live at the leaf bases of leaves of the ‘ie ‘ie liana (Freycinetia arborea Gaudich.). Several other species then again seem to be inhabitants of the leaf litter of the forest floor.

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In the official international Red List the species is considered extinct in the wild. Its name can be found furthermore in the Internet in several lists, which deal with animals that are extinct in the wild, but are kept in zoos for species conservation. Most often these lists are copies of copies of copies of ….

However at least in the case of the Oahu Deceptor Bush Cricket this seems to be an error. This species is obviously not kept in any zoo and therefore must indeed be regarded as truly extinct. (pers. comm. P. Maas & Ph. D. K. C. Zippel (Amphibian Program Officer of the Conservation Breeding Specialist Group (CBSG)))