Spotted Longicorn - Chlorophorus glabromaculatus

Scientific Name: Chlorophorus glabromaculatus Cerambycidae ('chlorophorus' = wearing yellowy-green; 'glabromaculatus' = hairless spots).

English Name: Spotted Longicorn.

French Name: le Clyte poilu (='the hairy Clyte').

5 Key Characters:
  • a black beetle, covered in short dense golden hairs over most of the thorax and elytra (wing cases).
  • a pattern of 3 black spots on each elytra and a pair of small spots on the thorax, formed by the absence of hairs in these places.
  • deeply notched eyes.
  • adults, max 15mm long, present in gardens, eating pollen June - August.
  • larvae develop in dry dead wood.

Lookalikes:  Other black spotted yellow longicorns. 

Habitat: Gardens with flowers where the adults can eat pollen. Living broadleaf trees (especially oak, but also chestnut and willow) with dry dead wood, either dead branches or fallen to the ground, where the larvae can develop. We have had them in the house, when they have either emerged from firewood, or flown in from the garden.

Adult Active Period: June-July-August.

Status: Common and widespread. 

Photographed by Loire Valley Nature:
Nice try, but this Spotted Longicorn has misidentified the house, Preuilly sur Claise, August.
Investigating a bag in the house, Preuilly sur Claise, August.
A specimen found in the house, photographed using a whitebox technique.

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