Eucalyptus haemastoma, commonly known as scribbly gum,[2] is a species of tree that is endemic to the Sydney region.

It is one of several eucalypts with prominent and differing insect scribbles in the bark, caused by the larvae of Ogmograptis, (and in the case of E. haemostoma - probably O.

[7] Eucalyptus haemastoma was first formally described in 1797 by James Edward Smith in Transactions of the Linnean Society of London.

[8][9] Smith noted "[f]ruit globose, cut off at the summit, its orifice surrounded by a broad deep-red border".

The specific epithet is derived from the Greek haima, 'blood' and stoma, 'mouth', referring to the reddish disc of the fruit.