The genus Sigaus is endemic to New Zealand and with all but one species endemic to the South Island. There are nine species of Sigaus.
Sigaus childi was described as a new species in 1999. It is closely related to S.minutus from the MacKenzie Basin. There are 16 species of grasshopper in NZ.
Sigaus are distinguished by the marked differences in appearance of the male genitalia.
DoC's endangered species ambassador, Nicola Toki tells us all about this critter.