Seq # 410010010

Adscita geryon (Hübner, 1813) Species

Last modified: Nov. 4, 2023, 10:27 a.m.

This very rare and declining species is only known from a few places in the southern provinces in Belgium.


Family: Zygaenidae > Subfamily: Procridinae > Genus: Adscita > Species: Adscita geryon
Vernacular names
Kleine metaalvlinder (NL), Cistus Forester (EN), La Turquoise de l'Hélianthème, Le Procris de l'Hélianth (FR), Sonnenröschen-Grünwidderchen (DE)
First mention in Belgium
Lambillion L.-J. 1900–1913. Catalogue des Lépidoptères de Belgique. — Revue mensuelle de la Société entomologique namuroise Supplément: 1–464. On page 380.




Wingspan 20–25 mm. For a certain determination within this genus, examination of the genitalia is essential.

Museum specimens

Specimens in nature



Young larvae make a number of rather large, untidy fleck mines. The opening of the mine is a slit at the side. The mines contain little of no frass. The lower-surface opening, by which the larva has entered the mine, is irregularly roundish. Older larvae live free on the plant.
After hibernation the caterpillars are fully-grown between late April and mid-May and pupate in a cocoon near the ground.
They are active during the day and both sexes visiting flowers. They have a slow flight.

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Flight periods

The adults fly from late June towards end of July.

Observed on

Host plant (genera):

The larva lives on Helianthemum nummularium.

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It inhabits limestone grasslands and outcrops and chalky habitats.

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