A Field Guide to June 2016 Vermont Center for Ecostudies
Dark Form Eastern Tiger Swallowtail. Web group of male eastern tiger swallowtails puddling, including a male eastern black swallowtail. Yellow wings with black stripes and borders;
A Field Guide to June 2016 Vermont Center for Ecostudies
The black form of the eastern tiger swallow tail may be an example of deceptive coloration using mimicry. The wing margins are black with a row of yellow spots. Web a dark form looks similar to a pipevine swallowtail. Hindwing with blue scaling and yellow marginal spots. Web the black form the the eastern tiger swallowtail is most common in the southern part of its range in areas also inhabited by the pipevine swallowtail, a butterfly that has an unpleasant taste. Abdomen with black lateral stripe female: Hindwing with blue scaling in black border; Yellow wings with black stripes and borders; The black form is called dimorphic coloration, which adds a level of protection by mimicking the distasteful pipevine swallowtail. Some female tiger swallowtails are all black with darker black stripes and extra blue markings on their lower.
The eastern, western, appalachian, and canadian tiger swallowtails. That’s one in the photo above. Thanks for sending our readership such a nice comparison of the dark female tiger swallowtail and a female black swallowtail. Ventral hindwing with faint darker stripes. Eastern tiger swallowtails are diurnal, and are usually solitary. The eastern tiger swallowtail is a large species with a wingspread range of 7.9 to 14.0 cm (approx. Some female tiger swallowtails are all black with darker black stripes and extra blue markings on their lower. The innermost band lines up with the median band of the hind wing. The eastern, western, appalachian, and canadian tiger swallowtails. Happy thanksgiving doris, the butterfly in question is a dark form of the female tiger swallowtail. There is an image on bugguide that also has two tails.
