Dryas
1 species
Dryas iulia (often incorrectly spelled julia), commonly called the Julia butterfly, Julia heliconian, the flame, or flambeau, is a species of brush-footed (or nymphalid) butterfly. The sole representative of its genus Dryas, it is native from Brazil to southern Texas and Florida, and in summer can sometimes be found as far north as eastern Nebraska. Over 15 subspecies have been described.
Its wingspan ranges from 82 to 92 mm, and it is colored orange (brighter in male specimens) with black markings; this species is somewhat unpalatable to birds and belongs to the "orange" Müllerian mimicry complex.
This butterfly is a fast flier and frequents clearings, paths, and margins of forests and woodlands. It feeds on the nectar of flowers, such as lantanas (Lantana) and shepherd's-needle (Scandix pecten-veneris), and the tears of caiman, the eye of which the butterfly irritates to produce tears. Its caterpillar feeds on leaves of passion vines, including Passiflora affinis and yellow passionflower (P. lutea) in Texas.
Its mating behavior is complex and involves a prolonged courtship whose outcome appears to be controlled by the female. This raises questions pertaining to the occurrence of the evolution of sexual conflict.
The species is popular in butterfly houses because it is long-lived and active throughout the day. However, the caterpillars are spiky and may cause a skin rash.
Dryas iulia is common in the tropical and subtropical areas of North, Central, and South America. In South America, throughout countries like Brazil, Ecuador, and Bolivia, the Julia butterfly is commonly distributed. The butterfly is also widespread throughout a number of the Caribbean islands, with endemic subspecies located in Cuba, Dominica, the Bahamas, and Puerto Rico, among others. Moving further north, the species can be commonly witnessed in Central America up into Texas and Florida (and can occasionally be found to move into the Nebraska area during the summer). The geographic distribution of D. iulia overlaps with the ranges of other butterflies which sometimes leads to conflict. For example, the ranges of D. iulia and the gulf fritillary overlap; in some cases, gulf fritillaries can sometimes be subjected to competition and fighting from Dryas iulia moderata when the two species have breeding populations in similar areas and within the same geographic range.
D. iulia prefer open, sunny breaks in the subtropical and tropical forests it inhabits. The butterfly is also common in open areas such as gardens, cattle grazing lands, and forest clearings, due to human impact. D. iulia can be found on a few main hostplants (or shrubs in Latin America) including the passion vine of the family Passifloraceae.
Dryas iulia (often incorrectly spelled julia), commonly called the Julia butterfly, Julia heliconian, the flame, or flambeau, is a species of brush-footed (or nymphalid) butterfly. The sole representative of its genus Dryas, it is native from Brazil to southern Texas and Florida, and in summer can sometimes be found as far north as eastern Nebraska. Over 15 subspecies have been described.
Its wingspan ranges from 82 to 92 mm, and it is colored orange (brighter in male specimens) with black markings; this species is somewhat unpalatable to birds and belongs to the "orange" Müllerian mimicry complex.
This butterfly is a fast flier and frequents clearings, paths, and margins of forests and woodlands. It feeds on the nectar of flowers, such as lantanas (Lantana) and shepherd's-needle (Scandix pecten-veneris), and the tears of caiman, the eye of which the butterfly irritates to produce tears. Its caterpillar feeds on leaves of passion vines, including Passiflora affinis and yellow passionflower (P. lutea) in Texas.
Its mating behavior is complex and involves a prolonged courtship whose outcome appears to be controlled by the female. This raises questions pertaining to the occurrence of the evolution of sexual conflict.
The species is popular in butterfly houses because it is long-lived and active throughout the day. However, the caterpillars are spiky and may cause a skin rash.
Dryas iulia is common in the tropical and subtropical areas of North, Central, and South America. In South America, throughout countries like Brazil, Ecuador, and Bolivia, the Julia butterfly is commonly distributed. The butterfly is also widespread throughout a number of the Caribbean islands, with endemic subspecies located in Cuba, Dominica, the Bahamas, and Puerto Rico, among others. Moving further north, the species can be commonly witnessed in Central America up into Texas and Florida (and can occasionally be found to move into the Nebraska area during the summer). The geographic distribution of D. iulia overlaps with the ranges of other butterflies which sometimes leads to conflict. For example, the ranges of D. iulia and the gulf fritillary overlap; in some cases, gulf fritillaries can sometimes be subjected to competition and fighting from Dryas iulia moderata when the two species have breeding populations in similar areas and within the same geographic range.
D. iulia prefer open, sunny breaks in the subtropical and tropical forests it inhabits. The butterfly is also common in open areas such as gardens, cattle grazing lands, and forest clearings, due to human impact. D. iulia can be found on a few main hostplants (or shrubs in Latin America) including the passion vine of the family Passifloraceae.
