Distenia
Distenia
*Distenia* Lepeletier & Audinet-Serville, 1828 belongs to Disteniidae, a family now treated as separate from Cerambycidae proper and considered one of the most basal lineages within Cerambycoidea. Medium-sized and strikingly slender, these beetles range from 15 to 28 mm and are among the most distinctive longhorns of East Asia, where they inhabit forested landscapes from lowland margins up to 2000 m. Males carry extraordinarily elongated filiform antennae, making them unmistakable even among cerambycoids. Adults are diurnal and strong fliers, visiting flowers and host plants from May through August, while larvae develop slowly over two to three years inside dead or dying broadleaf wood.
Seasonal activity
Flight season: Summer–Autumn
Green = active months · Orange = peak
Host plants
Primary hosts: oak beech birch