Length: 2-2.3mm. Basic colour: black. Pattern: hind margin of elytra reddish-brown. Number of spots: 0. Pronotum: black (with reddish-brown margin in males). Head colour: reddish-brown (male), black (female). Leg colour: reddish-brown. Other features: hairy; tip of abdomen reddish-brown.
Habitats: deciduous woodland, habitats with oak. Host plants: oak trees. Food: Phylloxera. Overwintering sites: bark crevices and under the bark of oak trees.