[7] Adult females have a broad bilobed subgenital plate[8] while males have a triangular shape.

These Rhaphidophoridae are arboreal and during the day can be found in dry spaces under bark or in holes of various trees, especially Nothofagus cliffortioides and kanuka and in artificial refugia (wētā boxes).

All adult males have a conspicuous curved spine on the retrolateral inferior edge of their hind femur.

[1][15][14] A study conducted by Bremner et al. (1989) compared insect response to disturbance (touch) between individuals living with mammalian predators and those on mammal-free islands.

[16] Individuals within the genus Isoplectron are eaten by endemic reptiles such as the Tuatara (Sphenodon), spotted skink (Leiolopisma infrapunctatum) and Pacific geckos (Hoplodactylus pacificus) as well as avian species such as Riflemen (Acanthissitta chloris),[17] Ruru (Ninox novaeseelandiae), Kākā (Nestor meridionalis) and Tieke (Philesturnus).