Geogarypus plusculus is a species of pseudoscorpion in the Geogarypidae family.

It was described in 2021 by Australian arachnologists Karen Cullen and Mark Harvey.

The specific epithet plusculus (Latin: 'a little more') refers to it being yet another species in the genus.

The overall colour is brown to reddish-brown, with some paler and darker patches.

The type locality is the Shothole Canyon Road lookout in the Cape Range National Park, where the holotype was found beneath rocks.