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Sigaus
Sigaus piliferus 1895934.jpg
Sigaus piliferus
Scientific classification e
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Caelifera
Family: Acrididae
Tribe: Catantopini
Genus: Sigaus
Hutton, 1897
Species

Sigaus australis
Sigaus campestris
Sigaus childi
Sigaus homerensis
Sigaus minutus
Sigaus piliferus
Sigaus obelisci
Sigaus takahe
Sigaus villosus

Sigaus of grasshoppers in the tribe Catantopini that isendemic to New Zealand, and all but one species is endemic to the South Island: Sigaus piliferus is the only North Island representative and is the type species. There are eight species in the genus; all are flightless, and many are coloured for camouflage against rocky ground. Sigaus minutus and S. childi are threatened with extinction.

Taxonomy

The taxonomy of New Zealand endemic grasshoppers was substantially revised by Bigelow in 1967.

Sigaus australis Sigaus campestris Sigaus childi Sigaus homerensis Sigaus minutus Sigaus piliferus Sigaus obelisci Sigaus takahe Sigaus villosus
Photograph NZAcrididae18.JPG NZAcrididae20.JPG NZAcrididae1.JPG Sighom1.JPG NZAcrididae21.JPG Sigaus piliferus by Hannes Oberreiter.jpg NZAcrididae19.JPG NZAcrididae8.JPG
Elevation 1,300–1,700 m
(4,300–5,600 ft)
400–1,500 m
(1,300–4,900 ft)
200–500 m
(660–1,600 ft)
900–1,000 m
(3,000–3,300 ft)
300–800 m
(980–2,600 ft)
1,600–1,800 m
(5,200–5,900 ft)
1,000–1,400 m
(5,900–6,900 ft)
1,800–2,100 m
(–6,900 ft)
Described 1897
Hutton
1897
Hutton
1999
Jamieson
2003
Morris
1967
Bigelow
1897
Hutton
1967
Bigelow
2003
Morris
1950
Salmon
Habitat Tussock grasslands Dry rocky hillsides/
tussock grasslands
Dry rocky hillsides Tussock grasslands Fluvial outwash Tussock grasslands Alpine lichen fields Tussock grasslands Scree
Polymorphism Highly cryptic Highly cryptic Highly cryptic 2 Highly cryptic 2 Highly cryptic 1
Regions Canterbury
Otago
Canterbury
Otago
Southland
Otago Southland Canterbury Waikato
Gisborne
Hawke's Bay
Manawatū-Whanganui
Wellington
Otago Southland Canterbury
Size Medium Medium/large Medium Medium Very small Large Large Medium Large
Status Not threatened Not threatened Nationally Critical Range Restricted Nationally Endangered Not threatened Range Restricted Range Restricted Not threatened
Wings Micropterous
2–3 mm
Micropterous
2–3 mm
Micropterous
1–2 mm
Micropterous
2–3 mm
Micropterous
1 mm
Micropterous
3–4 mm
Micropterous
3–4 mm
Micropterous
2–4 mm
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