Sigaus robustus
| Robust grasshopper | |
|---|---|
| Sigaus robustus illustrated by Des Helmore | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Orthoptera |
| Suborder: | Caelifera |
| Family: | Acrididae |
| Genus: | Sigaus Hutton, 1898 |
| Species: | S. robustus |
| Binomial name | |
| Sigaus robustus (Bigelow, 1967) | |
| The distribution of S. robustus in New Zealand | |
| Synonyms | |
|
Brachaspis robustus | |
Sigaus robustus is a New Zealand species of grasshopper classified as Threatened: Nationally Endangered. It is restricted to open stony habitat of the Mackenzie Basin of the South Island. Although a grasshopper, it is a poor jumper, relying on camouflage to hide from predators. It is threatened by introduced mammals such as stoats, hedgehogs, and rats.
The New Zealand entomologist Tara Murray told North & South magazine in 2019: “They can actually jump, they just don’t land very well. On a hot day, an adult male can jump up to 1.5m, multiple times. Females are bulkier, so they don’t jump as far. These grasshoppers freeze as a first defence. If they do jump, it often ends as a back flop, belly flop or general ‘thock’ on the ground.”