Length: 1.5-2mm. Basic colour: brown. Pattern: dark brown to black along centre line, especially at the top, thus sometimes forming a dark T-shape. Number of spots: 0. Pronotum: black with brown tips, notably narrow. Head colour: black. Leg colour: brown. Other features: hairy.
Habitats: coniferous woodlands and trees. Host plants: needled conifers. Food: aphids and adelgids. Overwintering sites: sheltered positions on needled conifers, moss.