A small black Lasioglossum, added to the British list by Hawkins (2011). The female is unusual in having patches of flattened plumose hairs overlying the marginal areas posteriorly on the middle tergites, rather than anteriorly as is the norm for Lasioglossum. In the male the gena is produced backwards in the form of a variably developed triangular tooth. Lasioglossum sabulosum (Warncke), sometimes synonymised with sexstrigatum, is now considered a good species.
Download a paper describing the discovery of Lasioglossum sexstrigatum in Britain.
The first British example, a female, was taken by Roger Hawkins on 5.6.2008 at a site in east Surrey. Since 2008, a few records have been made from Surrey, West Sussex, Kent and Suffolk (Else & Edwards, 2018).
It occurs in much of central and western Europe, as far north as Sweden.