Seq # 903300030

Xestia triangulum (Hufnagel, 1766) Species

Last modified: March 13, 2023, 5:46 a.m.

A rather common species throughout Belgium.


Family: Noctuidae > Subfamily: Noctuinae > Tribus: Noctuini > Genus: Xestia > Subgenus: Megasema > Species: Xestia triangulum
Vernacular names
Driehoekuil (NL), Double Square-spot (EN), La Noctuelle de la Chélidoine (FR), Triangel-Bodeneule (DE)
Xestia rhomboidea (Esper, 1790)
First mention in Belgium
De Sélys-Longchamps E. 1844. Énumération des insectes Lépidoptères de la Belgique. — Mémoires de la Société royale des Sciences de Liége 2: 1–35. On page 11 (as Noctua triangulum O.). view page




Wingspan: 36–46 mm.

Museum specimens

Specimens in nature


The larva feeds at night and hides during the day low down near the ground.
The species hibernates as a larva and pupates in the ground.
The adults come to light and sugar.

No pictures yet!

Flight periods

The adults fly in one generation a year from the end of May till the end of July.

Observed on

Deciduous trees, Shrubs and Herbaceous plants

The larva lives on different species of herbaceous plants like Primula, Euphorbia amygdaloides, Anthriscus sylvestris and in spring also on shrubs and trees such as Prunus spinosa, Crataegus, or Rubus idaeus.

No pictures yet!