Identification: Thorax: Humeri black, mesonotum amber, sclerites above the coxae black. Mesopleuron black. Legs: Hind femora with two distinct black rings, mid femora with two distinct black rings Abdomen: Distinctive sigmoidal shape. Size: 5mm
One of two species with a distinctly amber coloured thorax. In N. ephippium this colouration extends down the sides of the thorax whereas in N. octoannulata the amber is confined to the top (mesonotum). To date N. octoannulata has only been recorded on the Iberian peninsula (and Turkey) where there are no records of N. ephippium, the two are geographically isolated.