Seq # 460170010

Polyommatus thersites (Cantener, 1835) Species

Last modified: April 13, 2021, 3:13 p.m.

Once a very local species occurring only in the south of Belgium. Extinct in our country.


Family: Lycaenidae > Subfamily: Polyommatinae > Tribus: Polyommatini > Genus: Polyommatus > Subgenus: Polyommatus > Species: Polyommatus thersites
Vernacular names
Esparcetteblauwtje (NL), Chapman's Blue (EN), Azuré de Chapman (FR), Kleiner Esparsetten-Bläuling (DE)
First mention in Belgium
Ball F. J. 1914. Notes sur les Lépidoptères de Belgique III. — Annales de la Société Entomologique de Belgique 58: 126. On page 126.




Museum specimens

No pictures yet!

Specimens in nature

Flight periods

The adults fly in two generations a year: in June and July, and in August-September.

Observed on

Host plant (species):
Onobrychis viciifolia

The larva lives on Onobrychis viciifolia. It is attended by ants of the genera Lasius, Formica and Tapinoma. The species hibernates in an early larval stage.

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