Observation: Pyractomena

Observation: Pyractomena

Primary Observer:

Mary Patterson

Event Date:

2026-06-15

Status:

Unreviewed

Survey

Site Name:

Mill Creek Falls Nature Preserve #1

Province/State:

Pennsylvania

Event Date:

2026-06-15

Time of Day:

Night-Time

Start Time:

20:00

End Time:

22:00

Number of Observers:

4

Primary Observer:

Mary Patterson

Additional Observers:

Ross Patterson, Elyse Smith, Matt Kofcheck

target_species_genus:

unknown

target_species_species:

unknown

Location and Habitat

Location Accuracy (meters):

25-50

Habitat Type:

Riparian - Areas Along lake or stream

Habitat Type Notes:

Wooded stream with good flow deep in forest, a gorge. Predominant species: rhododendron, native herbaceous plants, ferns, mature trees, moss

Elevation (meters):

112

Area Searched (hectares):

2

Artificial Light Sources

Vehicles: No
Street Lights: No
Buildings: No

Artificial Light Types

Sky Glow (diffuse illumination in the sky): No
Light Trespass (light cast on surfaces beyond its intended target): No
Glare (bright light causing visual discomfort): No

Artificial Light Notes:

This is part of a 92 acre nature preserve with no electric and no buildings in rural area.

Observation

Observation Type:

With Flash Data

Number Observed:

2-10

genus:

pyractomena

Species:

unknown

Observation Notes:

 

Specimen Voucher Number:

Flash Behavior

First Flash Time:

20:42

Last Flash Time:

21:45

First Flash Temp (F):

74.8

Last Flash Temp (F):

unknown

Flashes in Pattern:

1

Flash Color:

Orange

Flash Pattern Period:

2

Flash Duration:

1

Flash Interval:

1

Male Height Zone:

Low (0-3 ft), Moderate (3-8 ft)

Flash Location:

Within shrub vegetation

Male Flash Behavior:

two quick flashes and then a 4-6 second pause before two quick flashes again

Female Flash Behavior:

 

Leave a Comment

Connect

Sign up for our newsletter to receive updates.

Follow

Follow the Xerces Society.

Share

Share this page.

Support

Support the Xerces Society's conservation work.

This is a project of the Xerces Society, working in collaboration with the IUCN SSC Firefly Specialist Group and New Mexico BioPark Society.

Copyright © 2026 The Xerces Society •1631 NE Broadway Street, #821 • Portland OR 97232 USA
Firefly logo by Ink Dwell studio; © 2020 Jane Kim