Sphecomyrma is an extinct genus of ant which inhabited the northern hemisphere of Laurasia approximately 80 millions of years ago in the Cretaceous. It is one of the earliest known species of ant.
An ant with a mosaic of features, a mix of characteristics from modern ants and aculeate wasps. It possessed a metapleural gland, a feature unique to ants, it possessed a petiole which was ant-like in form. The mandible was short and wasp-like with only two teeth, the gaster constricted and the middle and hind legs had doubletibial spurs, wasp-like features. The antennae were, in form, midway between the wasps and ants, having a short first segment but a long flexible funiculus.