Sigaus piliferus is a species of short-horned grasshopper in the family Acrididae.

[1][2] Sigaus piliferus is restricted to alpine and sub-alpine habitats in North Island New Zealand.

[3] This grasshopper species has two ecotypes - the shubland form in the north with relatively long legs and the alpine form in the south.

[4][3] The two ecotypes were probably isolated during the last glacial maximum but are now in contact in the central volcanic region of North Island.

This article about a member of the grasshopper family Acrididae is a stub.