Seq # 603250030

Aplocera praeformata (Hübner, 1826) Species

Last modified: Aug. 26, 2021, 1:49 p.m.

A very rare and very local species, confined to a number of mountainous localities in the eastern part of the country. Its main stronghold is the Plateau of Losheimergraben near the German border.


Family: Geometridae > Subfamily: Larentiinae > Tribus: Chesiadini > Genus: Aplocera > Species: Aplocera praeformata
Vernacular names
Bonte blokspanner (NL), Purple Treble-bar (EN), La Rayure montagnarde (FR), Bergheiden-Johanniskraut-Spanner (DE)
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 16.




Museum specimens

Specimens in nature

Flight periods

The adults are on the wing in July and August. They are easily disturbed from their foodplant and later come to light.

Observed on

Host plant (species):
Hypericum perforatum

The larva lives on Hypericum perforatum from August to May.

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