Limenitis weidemeyerii W. H. Edwards, 1861
Status: Occasional resident
NENHP Ranking: S3, Tier 2
Range: Weidemeyer’s Admiral inhabits most of Montana south to southern New Mexico and southeastern Arizona, west to most of Nevada and east to western portions of Nebraska and the Dakotas. In Nebraska it is primarily associated with Pine Ridge habitats, and follows the Niobrara River east to Brown County.
Broods/Flight Times: In Nebraska there is a single flight (28 May – 6 July) peaking in mid-late June. A second flight reported at the lower altitudes of its range has not yet been observed in our area.
Larval Hostplant(s): Of the various willows, aspens and Rosacea recognized as hostplants (Coyote Willow – Salix exigua, Quaking Aspen – Populus tremuloides, Chokecherry – Prunus virginiana and Juneberry – Amelanchier alnifolia) are found in Nebraska, and of these Chokecherry is utilized almost exclusively.
Habitat: Weidemeyer’s Admirals frequent Pine Ridge canyons and streamsides where they occasionally become common.
Found at: Gilbert-Baker and Ponderosa SWMAs, Wildcat Hills SRA, Niobrara Valley Preserve, Ash Hollow SHP, Cedar Point Biological Station
Overwintering: Second instar larvae attach a partially eaten leaf to the hostplant with silk and roll the leaf into a tube in which they spend the winter.
Notes: At the eastern edge of their range (along the Niobrara River in north central Nebraska) they have hybridized with Viceroys and Red Spotted Purples. In this area Weidemeyer’s Admirals are rare to scarce, while the latter two species are common to abundant. It is suspected that male Admirals, finding few or no females, court the other two members of its genus found in the area.