Stenygrinum
Stenygrinum
*Stenygrinum* Bates, 1866 is a small cerambycid genus of the subfamily Cerambycinae, ranging in body length from 8 to 18 mm and displaying notably variable coloration, often with distinct patterning. Its larvae develop in dead or dying wood of *Quercus* and *Castanea*, progressing from subcortical feeding into the sapwood over one to three years. Adults are diurnal to crepuscular, attracted to fresh dead wood and UV light, and may feed on pollen, bark, or sap during the warmer months from May to August. The genus is monotypic within the Palaearctic, with its single representative distributed across East Asia at altitudes up to 1000 m.
Seasonal activity
Flight season: Summer–Autumn
Green = active months · Orange = peak
Host plants
Primary hosts: oak
External resources
Field tip: On dead wood or under bark. Hosts: Quercus. Monotypic genus — rare.