American Snout

Libytheana carinenta

The American Snout is one of the few butterflies that is immediately identifiable even to someone who has never seen it, because of its unique characteristic: members of the Snout family have enlarged palpi that look very much like a snout.

This species probably replenishes itself in Wisconsin each year from farther south. This species is known to have huge migrations in the southwestern United States and Mexico, where it may become so abundant that the butterflies literally darken the sky.

Weekly sightings for American Snout

Identifying characteristics

The most distinguishing characteristic is the extra long palpi that resemble a snout. The sexes are essentially the same with the upper surface somewhat brownish with central orange splotches on both wings and several white spots near the forewing tips. Below it resembles a dead leaf with various shades of gray and brown. Orange patches may be seen on the forewing below if the wings are more open.

Similar species

None in Wisconsin.

Habitat

The American Snout prefers wooded areas where the larval host plant Hackberry is found.

Flight

At least two generations a year possible. This species migrates north each year in May or June and may become established and rear at least a second brood.

Abundance

Not common in Wisconsin, but more common in the southern part of the state where its host plant Hackberry is found.

Late American Snout Sightings

Date County Reported by
Sep 29, 2010 Calumet Bob Ring
Sep 29, 2012 Grant Karl and Dorothy Legler
Sep 29, 2011 Marquette Dan Sonnenberg
Sep 30, 2015 La Crosse Daniel Jackson
Oct 31, 2004 Winnebago mitch

Locations

Map showing sighting locations for American Snout
Map key
American SnoutClick to enlarge

Cherokee Marsh, Madison, WI. July 28, 2006.

American SnoutClick to enlarge

Cherokee Marsh, Madison, WI. July 28, 2006.

American SnoutClick to enlarge

Sand Ridge State Park, Mason Co., IL. August 28, 2010.

American Snout

Photo © 2005 tom lewis

Bell Slough WMA, Faulkner Co., AR. February 21, 2005.