• Interior of the John Brown Fort

    Harpers Ferry

    National Historical Park WV,VA,MD

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  • Temporary Suspension of Reference Collection Research

    Due to the park archives and research room/library space move, new public research requests will not be filled until at least May 30th, 2014.

  • Change in Park Hours

    The park is currently open daily from 9 a.m. to 5 p.m. with the last shuttle bus departing Lower Town at 5:45 p.m. More »

Insects, Spiders, Centipedes, Millipedes

Eastern tiger swallowtail

An eastern tiger swallowtail along the forest edge on the Union Skirmish Line.

NPS photo

While walking the trail at BolivarHeights, visitors can observe eastern tiger swallowtails (Papilio glaucus) and zebra swallowtails (Eurytides marcellus marcellus) dipping along the forest edge. Following this trail back to the Union Skirmish Line, meadow fritillaries (Boloria bellona bellona), silver-spotted skippers (Epargyreus clarus), and monarch butterflies (Danaus plexippus) are just a few of the species that can be spotted feeding in the open field.

Approximately 140 insect species, including spiders, butterflies, ticks, mites, millipedes and centipedes, have been identified in the park. Currently, the park is conducting three separate insect surveys. Butterfly (Lepidoptera), dragonfly and damselfly (Odonata), and aquatic insect (Ephemeroptera, Plecoptera, Trichoptera, etc.) populations within the park are being inventoried at this time. Results of each of these studies will be made available upon their completion.

Did You Know?

Did You Know?

President Franklin D. Roosevelt signed legislation creating Harpers Ferry National Monument on June 29, 1944.