Butterfly Atlas Species Accounts

Butterfly Atlas data collected from 1986-1990

Small Tortoiseshell

Nymphalis urticae

Identification

Wingspan: 1 15/16 2 3/8". Superficially similar to Milbert‘s Tortoiseshell but more orange and less solid brown in the basal half of both wings above.  Also three distinctive black spots at the center of the forewing above, lacking in Milbert‘s.  The very similar California Tortoiseshell, a very rare western vagrant, is larger.

Distribution

Eurasia. Known in North America from very few specimens and/or sight records. One old New York record and four recent New York records 1987-1991: one from Albany and three from New York City. There is one old New England record.

Status in Massachusetts

Known from a single nineteenth century specimen, collected by Outram Bangs, on the wing, in Watertown. The specimen was captured "a few years" previous to 1875, and was exhibited at the Cambridge Entomological Club (Psyche, 1 (19), p. 120 (Nov., 10 Dec.) 1875. The location of this specimen is unknown.

Flight Period in Massachusetts

font size="3">Flies from March to late fall in the U.K.

Larval Food Plants

Nettles (Urtica, spp. Including the widespread introduced U. dioca). 

Adult Food Sources

Information for this species in Massachusetts is currently unavailable.

Habitat

Information for this species in Massachusetts is currently unavailable.

Life Cycle

Species does not reproduce in Massachusetts.

Notes

A recent article by Glassberg (Journal of the Lepidopertists‘ Society 46 (4), 1992, 302 304) suggests that Small Tortoiseshells may be breeding in the Hudson River Valley of New York.

Account Author

Brian Cassie