Seq # 602010140

Idaea macilentaria (Herrich-Schäffer, 1847) Species

Last modified: March 29, 2021, 10:13 p.m.

A very rare species, mainly known from some very old records in the southern part of the country, especially in calcareous grassland in the extreme south of LX. A healthy population exist not far from the Belgian border in France.
Recently (2019) an observation became known from LX after a long period of absence. Further research shows that small populations survive here in southern LX.


Family: Geometridae > Subfamily: Sterrhinae > Tribus: Sterrhini > Genus: Idaea > Species: Idaea macilentaria
Vernacular names
Slanke stipspanner (NL), L'Acidalie maigre (FR), Brachwiesen-Zwergspanner (DE)
Idaea antiquaria (Herrich-Schäffer, 1847) and Idaea sylvestraria sensu auct.
First mention in Belgium
Fologne E. 1859a. Lépidoptères. Catalogue des Phalénidées. Deuxième partie. — Annales de la Société entomologique belge 3: 107–132. On page 130.




Museum specimens

Specimens in nature

Flight periods

The adults fly in May until July and are easily disturbed during the daytime.

Observed on

Dead leaves

The larva lives on various herbaceous plants.

No pictures yet!