Howard County Bird Club
Hackberry Emperor
Place name abbreviations: MPEA – Middle Patuxent Environment Area; PRSP – Patuxent River State Park; PVSP – Patapsco River Valley State Park.
Click on the common name to obtain additional information from the Butterflies and Moths of North America web page. BugGuide is another web resource.
Legend:
| Common name [Link is to BAMONA] (wingspan range in inches) | Occurrence level & flight period. | |
| Habitat. | Typically visits (for nectaring). | Larval host plants. |
| Hackberry Emperor (1.3–2.5″) | Rare: M-Jun & M-Aug | Woods trails & edges | Wet spots | Hackberry | |
August 6, 2017
Nount Pleasant
Kevin Heffernan
July 12, 2018
Mount Pleasant
Kevin Heffernan
August 23, 2018
Mount Pleasant
Kevin Heffernan
Female ovipositing
August 16, 2015
David Force WMA
Linda Hunt
Eggs
July 2, 2021
Mount Pleasant
Bonnie Ott
Early instar
July 2, 2021
Mount Pleasant
Bonnie Ott
Caterpillar
May 31, 2019
Mount Pleasant
Bonnie Ott
Chrysalis
August 21, 2017
Mount Pleasant
Bonnie Ott
The phenograms show the maximum number of individual butterflies of this species seen in the first eight years of the Howard County Butterfly Survey. From these graphs, one can see the number of broods of each species, when they are active, and the relative abundance of the species in each brood. The observed early and late dates are shown below The graphs can be used to anticipate the first sighting of a given species in the year and can help with identification.
Early: 6/9/2021 Late: 9/5/2018