Bug FAQStenurella bifasciata
Stenurella bifasciata · Order: Coleoptera · Family: Cerambycidae
Stenurella bifasciata is a small longhorn beetle about 6 to 10 mm long. Males have yellow-brown wing covers while females have red wing covers with dark markings. Adults are seen from May through September in meadows and slopes of foothills and valleys across most of Europe and nearby regions.
Source: Wikipedia
How to recognize it
The head, antennae, pronotum and legs are black. Males have yellow-brown elytra; females have red elytra with a dark suture, black tips and a heart-shaped or rhomboid dark spot.
Source: Wikipedia
Size
They grow to a length of 6 to 10 mm (0.24 to 0.39 in).
Source: Wikipedia
Life cycle
The life cycle lasts about two years, with larvae developing in dead wood.
Source: Wikipedia
When you see it
Adults are active from May to September.
Source: Wikipedia
Where it comes from
They are found throughout most of Europe, the eastern Palearctic, and the Near East.
Source: Wikipedia
More photos
Questions people ask
When can I see adult Stenurella bifasciata?
Adults are on the wing from May through September.
Source: Wikipedia
What do the larvae of Stenurella bifasciata eat?
The larvae feed on dead wood of deciduous trees like oak, fig, willow, dog-rose and Spanish broom.
Source: Wikipedia
Same family (Cerambycidae)
House LonghornHylotrupes bajulusCan damage your home
Asian Longhorned BeetleAnoplophora glabripennisDamages trees, gardens or crops
Red Milkweed BeetleTetraopes tetrophthalmus
White-spotted SawyerMonochamus scutellatusCan damage your home
Red Pine Longhorn BeetleStictoleptura rubra
Spotted Longhorn BeetleRutpela maculataDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Stenurella_bifasciata
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.