Observations by todd3331

Photographed by Vernon Evans

Female

female. Southern Utah population may be nominate aenus.

male. This population may conform to nominate aenus. We're still figuring that out.

Photo taken from BYU Monte L. Bean Life Science Museum.

Older record. Specimen collected by Oskar Dorfman as found in COL. Clyde F. Gillette notes. This species hasn't been noted for decades in Utah.

Male collected by Steve Sommerfeld 25 Jul 1997.

Female collected by Steve Sommerfeld.

Female found nectaring on Lantana in the parking lot of Chevron Station adjacent to Hwy 93 near Hoover Dam.

Basking on host plant Medicago sativa.

With @calebstroh, found three ova and one first instar on Asclepias speciosa. Special thanks to land owner who provided permission to search.

Ovum located on north side of UT Hwy 62 on Asclepias speciosa

2nd instar larva located on Asclepias speciosa with @calebstroh who located a fifth instar caterpillar in the same location (not photographed).

Late instar larva located on Lupinus argenteus on 2 Aug 2003 and reared to mature larva that overwintered, pupated with male eclosing 31 Mar 2004.

Late instar larva collected on Hedysarum boreale on 17 Jul 2017; fed to pupa with male eclosing 8 Aug 2002.

Parental female collected on 9 May 2002 and oviposited on Hedysarum boreale. Ovum hatched and larva fed through to pupa. Adult female eclosed 26 Jun 2002.

Larva collected on 2 Jul 2002 on Ceanothus velutinus and pupated same fall without diapausing. Female eclosed 19 Sep. 2002.

Larva collected on 2 Jul 2002 on Ceanothus velutinus and fed to mature larva. Overwintered, pupated and male eclosed 14 Apr 2003.

Mature caterpillar found on Salix exigua 11 Sep 2000. Overwintered and pupated the next spring. Female eclosed on 2 Apr 2001.

Mature caterpillar found on Populus tremuloides on 21 Sep 2001. Instead of hibernating through the winter; it pupated where male eclosed on 29 Nov 2001.