The Falcate Orangetip (Anthocharis midea) is a North American butterfly that was described in 1809 by Jacob Hübner. It belongs to the family Pieridae which is the white and sulphurs. These butterflies are mostly seen on the eastern side of the United States, particularly in Texas and Oklahoma. They eat the nectar of violets and mustards. They tend to live in open, wet woods along waterways, in open swamps, and less often in dry woods and ridgetops. The Falcate Orangetip is a true spring time butterfly, being on the wing from April-May (March-May in southern Texas).
The upper side of the male's forewing is orange, but females lack this. Both have a round black spot located in the cell. The underside of the hindwing usually has intricate green-marbling. The orangetips have a wingspan of around 3.5-4.5 centimeters.
The only similar species in the Falcate Orangetip's range is the Olympia Marble Euchloe olympia. The upper side of the Olympia Marble's forewing has a grayish-black apex and the underside of the hindwing has yellow-green marbling.
Males patrol on hilltops and flats all day seeking females. Females lay their eggs singly on host plant flowers. The eggs are yellow-green but turn red just before hatching. The larvae feed mainly at night and prefer to eat flowers, flower buds, and seed pots rather than leaves. They are also cannibalistic, devouring smaller larvae that may be feeding on the same plant. The larva is an olive-green color with a yellow middorsal stripe. There is a white spiracular stripe that runs the length of the body. It has short hairs and is covered with tiny black dots. It can grow up to 3 centimeters long. The larvae pupate in mid June. The chrysalis is a yellowish color and is covered with black spots. It also has a spike-like projection on the head which makes it look somewhat like a thorn. The chrysalis may overwinter for two or more years. It has 1 brood per year.
Here is a list of host plants used by the Falcate Orangetip:
- Arabis glabra
- Arabidopsis lyrata
- Arabis serotina
- Barbarea verna
- Boechera canadensis
- Boechera grahamii
- Boechera laevigata
- Cardamine angustata
- Cardamine bulbosa
- Cardamine concatenata
- Cardamine diphylla
- Cardamine hirsuta
- Cardamine parviflora
- Lepidium densiflorum
- James A. Scott 1986. The Butterflies of North America. Stanford University Press, Stanford, California. ISBN 0-8047-2013-4
- David L. Wagner 2005. Caterpillars of Eastern North America. Princeton University Press, Princeton, New Jersey. ISBN 0-691-12144-3
- Rick Cech and Guy Tudor 2005. Butterflies of the East Coast. Princeton University Press, Princeton, New Jersey. ISBN 0-691-09055-6
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