The soldier termites of this species have rounded heads, long straight mandibles and yellowish-brown bodies.

[1] The nests of Nasutitermes walkeri are initially established in the crowns of trees at sites where there is some damage to the timber from fire or decay.

A more substantial nest is later constructed higher up, sometimes as high as 20 m (66 ft) above the ground.

[1] The outside of the nest has a thin, papery surface and the internal structure is also fragile.

The termites feed mainly at ground level and they create tubes down the trunk of the tree and then surface tubes or subterranean passages through the soil to Feed on wood.