Reserva Ecológica Costanera Sur

Sitio realizado por aficionados a la observación de aves desde 10 de enero 2006

Mexican Silverspot - Dione moneta

Family Nymphalidae - Heliconiinae

First photographic record of this species discovered by Sergio and Cora on April 12th 2014. Primer registro fotográfico de esta especie descubierta por Sergio y Cora el 12 de abril de 2014. This species inhabits from the south of the United States to the north of Argentina. To have found it here far from its distribution range has been quite a surprise. And there was not only one, but four individuals.At first sight both the dorsal and ventral side of the wings look much more the Gulf Fritillary Agraulis vanillae maculosa, a very common species here. But at a closer look we noticed that the orange colour was stronger, this individual was bigger and that it lacked the black dots. The genus Dione contains three species, moneta and glycera which are in the north of the country and juno, Juno Silverspot, which frequents Buenos Aires.This species established in the reserve.
Moneta/Mexican Silverspot© Sergio Cusano Moneta/Mexican Silverspot© Sergio Cusano

Moneta/Mexican Silverspot© Victoria MansillaMoneta/Mexican Silverspot© Carlos ToledoMoneta/Mexican Silverspot© J. Simón Tagtachian

Moneta/Mexican Silverspot© Cora RimoldiIt feeds on Passiflora species. Here on Woodland passion flower Passiflora mirafoliaMoneta/Mexican Silverspot© Cora Rimoldi

Differences with Gulf Fritillary Agraulis vanillae maculosa
Moneta-espejitos/M. Silverspot- G. Fritillary© Sergio CusanoVery similar both in dorsal and ventral views. Together size difference is notorious. Darker orange colouring and lack of black and silver dots in Mexican Silverspot. Espejitos/Gulf Fritillary© FlorIf forewings are visible, Gulf Fritillary's black and silver dots are clearly seen (top). Whereas Mexican Silverspot (below) presents a rosy and yellowish area.Moneta/Mexican Silverspot© Miguel Ángel LuceroMore attention is to be paid when forewings hide between hindwings. Espejitos/Guls Fritillary© Victoria MansillaTwo white spots make out from rest in Mexican Silverspot (below). They have almost a U-like form. In Gulf Fritillary (above) there is only one. Three rosy dots are clearly seen on the basal part of the hindwing in Mexican Silverspot. Only one in Gulf FritillaryMoneta/Mexican Silverspot© J. Simón Tagtachian