Seq # 900030020

Diachrysia chryson (Esper, 1789) Species

Last modified: June 18, 2022, 3:01 p.m.

A very rare and restricted species in the southern part of Belgium.


Family: Noctuidae > Subfamily: Plusiinae > Tribus: Plusiini > Genus: Diachrysia > Species: Diachrysia chryson
Vernacular names
Grote koperuil (NL), Scarce Burnished Brass (EN), La Plusie topaze (FR), Wasserdost-Goldeule (DE)
First mention in Belgium
Derenne F. 1925. Espèce nouvelle pour la faune belge. — Revue mensuelle de la Société entomologique namuroise 25: 73–74. On page 73.




Wingspan: 44–54 mm.

Museum specimens

Specimens in nature


Overwinters as a larva among the stems of the food plant and other nearby vegetation.
Pupates in a whitish oval cocoon spun on a leaf of the food plant.
Occasionally flies in sunshine and later comes to light but apparently not to sugar.

No pictures yet!

Flight periods

The adults fly in one generation a year: from early July till mid Augustus.

Observed on

Host plant (species):
Eupatorium cannabinum

The larva lives on Eupatorium cannabinum with a preference for plants growing in the shadow.

No pictures yet!