A subalpine species known from mountains near Hanmer Springs and Nelson. It is most easily found at the bases of Celmisia where the deadleaves are slowly rotting. It is the smallest of all the species.

A wet forest, predominantly Nothofagus, species of the Canterbury and Westland mountains. Generally common in the rotting logs of the forest floor.

Widespread from Mt Maungatua, near Dunedin, through the Catlins to Bluff and Queenstown and all through Fiordland from Jacksons Bay south to Solander Island. It is yet to be found on Stewart Island and it is probably abs...

A species known only from one site in dry forests of Mid-Canterbury. It habitat has been invaded by many exotic Vespula germanica wasps and there is a noticeable dearth of native fauna in the vicinity of their nes...

An endemic species of Banks Peninsula forests and shrublands.

Widespread in the dry broadleaf and Nothofagus forests and shrublands of North Canterbury, the Kaikoura coast and environs of Wellington. It is the main dryland species north of the Waimakariri River

The smaller and rarer of the two species in South Canterbury - North Otago dry forests and shrublands (see Dityloura unicostata).

Widespread in the wetter forest of northern South Island from Marlborough Sounds, Nelson, Westland south to Hari Hari and extending eastwards over the MaIN Divide into western parts of Canterbury. Common forest log speci...

Confined to forests of central Southland.

Known from sourthen half of the North Island and a few sites in the Marlborough Sounds. Habitat: forest logs.

Known from a few sites in the southern half of the North Island south of Rotorua but many in the Kaikoura district. Clearly it overlaps the ditribution of three other species and two may be found in the same log at Kaiko...

Common if not abundant in the logs of the Mid and South Canterbury foothills. There appears to be a sharp boundary in its distribution as it has not been found north of the Waimakariri River except within the Hawdon and ...

Acommon species of the high rainfall forests west of the Main Divide from the Northwest Nelson to Fiorland. Some parts of its forest habitat are reputed to have a rainfall of 6 to 10 metres. It is relatively common under...

A subalpine species endemic to the Craigieburn and nearby ranges and extends northwards to the Seaward and Inland Kaikoura ranges. There is a paucity of records between Hanmer Springs and the ranges immediately south of ...

see Icosidesmus hochstetteri.

There are at present only three described species in the North Island, the widespread Icosidesmus hochstetteri and I. collinus , and the highly local, Wellington species I. wheeleri. About five ot...

Icosidesmus montanus is very similar to Icosidesmus variegatus in general features except its colour: it is a rich reddish-brown as are most alpine species. Its habitat is the alpine screes of the central ...

Two species, Icosidesmus tumidus and Icosidesmus latidens are restricted to the lowlands of South Canterbury. The former tends to be in the wetter forest/shrubland habitats whilst the latter is in those w...

There are about 30 members of the genus Icosidesmus in New Zealand. Many species are yet to be described. All are similar to I. variegatus in shape and size but colour patterns vary from a relatively unif...

see Icosidesmus hochstetteri.

Icosidesmus worthingtoni is very widespread in Otago and is one species that is most tolerant of large differences in the natural covering vegetation and habitat but intolerant of any changes to the environment c...

An endemic species on the subantarctic Auckland Islands

An endemic species on the subantarctic Campbell Islands

An endemic genus and species on the subantarctic Auckland Islands