Alpinacris crassicauda

Alpinacris crassicauda is a species of grasshopper only known from West Coast Region and Tasman Region, New Zealand. The genus Alpinacris is endemic to the South Island of New Zealand. A. crassicauda was described in 1967 by Robert Sidney Bigelow,[1] with a type locality of Lead Hills, Boulder Lake (40°53′35″S 172°32′56″E). A male holotype and paratype are deposited in the Canterbury Museum, Christchurch. Like all of New Zealand sub-alpine and alpine grasshoppers A. crassicauda has a 2 or 3 years life cycle. The eggs must ‘overwinter’ before they will hatch. Hoppers are found throughout the year and adult grasshoppers can be found throughout the New Zealand summer between December and April. The adult A. crassicauda do not overwinter.

Alpinacris crassicauda
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Orthoptera
Family:
Acrididae
Genus:
Alpinacris
Species:
A. crassicauda
Binomial name
Alpinacris crassicauda
Bigelow, 1967 [1]
The distribution of A. crassicauda in New Zealand

Distribution and habitat

Alpinacris crassicauda is only known from West Coast Region and Tasman Region of New Zealand.[2] It can be found as far south as the Right Branch of the Rahu River, Spring Junction (42°17′31″S 172°07′24″E) and as far north as the Thousand Acres Plateau, Matiri Range (41°35′37″S 172°19′21″E). Alpinacris crassicauda prefer alpine tussock grasslands between 1,200–1,500 metres (3,900–4,900 ft), however, can be found as low as 1,020 metres (3,350 ft) on the Thousand Acres Plateau, Matiri Range (41°35′37″S 172°19′21″E).

Species description

The wings on A. tumidicauda are micropterous (small wings) between 2–4 millimetres (0.079–0.157 in) making this species flightless like most of New Zealand grasshoppers. Male body length 18–22 millimetres (0.71–0.87 in); Female body length 25–35 millimetres (0.98–1.38 in).

Type information
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References
  1. R. S. Bigelow (1967). The Grasshoppers of New Zealand, their Taxonomy and Distribution. Christchurch: University of Canterbury.
  2. Morris SJ. 2002. Distribution and Taxonomic status of New Zealand endangered grasshoppers (Orthoptera: Acrididae). Department of Conservation, Wellington.
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