Rhône list

General index

Geranium Bronze

(Cacyreus marshalli)

 

02/09/07 Rhône (69)

28/10/07 Rhône (69)

16/09/08 Rhône (69)

12/04/09 Rhône (69)

12/04/09 Rhône (69)

Egg on pelargonium 30/09/08 Rhône (69)

Caterpillars 22/10/08 Rhône (69)

Caterpillar on pelargonium 26/10/08 Rhône (69)

Immature chrysalis 22/10/08 Rhône (69)

Mature chrysalis 29/09/08 Rhône (69)

Empty chrysalis case 30/09/08 Rhône (69)

 

The Geranium Bronze is an African species which has been accidentally imported into parts of Europe in deliveries of cultivated pelargoniums, the foodplant of the caterpillars. Observations began in the 1990's in France, where the butterfly has spread rapidly and now established itself in most of the southern half of the country. Unlike other species, it is almost exclusively an 'urban' butterfly as the females lay their eggs on cultivated pelargoniums.These plants are used extensively in France to decorate window sills and flower beds in virtually all villages and towns throughout the country, undoubtedly facilitating the spread of the species. This butterfly is unmistakable with its chocolate brown uppersides, chequered fringes and tails. The undersides are a complex pattern of cream, brown, black and white markings. As it is now common in the village where I live near Lyon I am able to find it easily each year and have been able to observe all the life stages.

Rhône list

General index