Cacyreus marshalli - photo © K. Bormpoudaki

Cacyreus marshalli, Crete - photo © K. Bormpoudaki

Cacyreus marshalli


Cacyreus marshalli is a butterfly of the family Lycaenidae on the island of Crete, Greece.

Scientific name

Cacyreus marshalli (Butler, 1898)

Common name

Geranium Bronze


Family: Lycaenidae > Subfamily: Polyommatinae > Tribus: Polyommatini > Genus: Cacyreus


Male to female: 15-23 mm


The butterfly has a bronze coloring on its upper surface with white spots on the fringe. The hindwings contain an eyespot in order to divert predators from attacking.

Females are larger than males but otherwise similar.


It flies for short periods of time and frequently rests on leaves or flowers.


Cacyreus marshalli lives in artificial habitats in rebates with geranium (Pelargonium) and in natural habitats with Geranium or Erodium.

Food plant

Cacyreus marshalli in Crete can be easily found in Geraniaceae plants such as Geranium and Pelargonium species.

Flight Period
The butterfly flies in several generations per year.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

It is an invasive, non-native species. The butterfly was first introduced to Europe in the late 20th century, where it has quickly spread to many southern and eastern European regions.

Since today, it has not been regarded as a quarantine pest by any regional plant protection organization.


Least Concern (LC)

(*European Red List of Butterflies, 2010)

Cacyreus Marshalli Distribution Map

*based on

Cacyreus marshalli location map based on greek butterflies distributions maps by L.N. Pamperis (revised 2021)