A new species of the braconid genus Notosigalphus is described from Flinders Island, Tasmania (N. sophae** Iqbal and Austin sp. n). This is the third species recorded of this rare Australian endemic genus, and the first member of the subfamily Sigalphinae to be recorded elsewhere than on the mainland. A key to separate species of Notosigalphus is presented, as is a discussion of relationships, distribution and biology of the subfamily in Australia. pdf missing