Mexico, USA & Canada
Family - PAPILIONIDAE
marcellus, Tennessee, USA ©
Butterflies in the genus
Protographium are characterised by having translucent whitish
or yellowish wings, marked with bands or stripes of black or dark
brown. The forewings are decidedly triangular in shape, and the
hindwings adorned with a single long sword-like tail.
There are 13 Protographium
species, distributed variously from the USA to Bolivia. Several of
the species, including the North American
celadon, philolaus and
marcellus, were formerly placed in
Eurytides. That genus was later split,
with members of it's subgenus Eurygraphium
reassigned to Protographium, and
members of it's other subgenus Bellerographium
retained in Eurytides.
Protographium marcellus is recorded
from most of the states of the eastern USA, and from Cuba.
This species is
found in light deciduous woodland and grassland / woodland mosaics,
usually in damp areas, at altitudes between sea level and about
The egg is pale
green globular. It is laid singly on the leaves of the larval
foodplants. The larva feeds on Asimina
( Annonaceae ).
Males obtain their
sustenance almost exclusively by imbibing mineralised moisture from
mud, while females feed instead on flower nectar.