Biformalia Sjöstedt, 1920 Phaulacridium[1] is a genus of grasshoppers in the tribe Catantopini from Australia and New Zealand.

Phaulacridium grasshoppers require open space for thermoregulation through basking and forage in natural and modified grasslands.

[3] Females are larger than males in all five species, and size variation within Phaulacridium vittatum is associated with rainfall.

It is fairly common alongside roads and in disturbed habitats in North and South Island.

[3] The Australian wingless grasshopper Phaulacridium vittatum is regarded as an agricultural pest in some regions with the potential to shift in response to changing climate and land use.