Observation: Unknown

Observation: Unknown

Primary Observer:

Nathaniel Lawson

Event Date:

2026-07-02

Status:

Unreviewed

Survey

Site Name:

Undisclosed

Province/State:

Indiana

Event Date:

2026-07-02

Time of Day:

Night-Time

Start Time:

21:20

End Time:

22:30

Number of Observers:

1

Primary Observer:

Nathaniel Lawson

Additional Observers:

NA

target_species_genus:

unknown

target_species_species:

 

Location and Habitat

Location Accuracy (meters):

50-100

Habitat Type:

Developed - Sub/urban areas; parks/gardens

Habitat Type Notes:

Dominant plant species are mulberry trees, Amur honeysuckle, hostas, and a variety of mature or semi mature maple trees.

Elevation (meters):

219m above sea level

Area Searched (hectares):

2

Artificial Light Sources

Vehicles: No
Street Lights: Yes
Buildings: Yes

Artificial Light Types

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

Artificial Light Notes:

Approximately 27 external light sources from homes or security lamps. Most light fixtures remained free of firefly activity during observed time, specimens tended to avoid bright lights and stay in groups of a dozen or more in shadowed or dimly light areas.

Observation

Observation Type:

With Flash Data

Number Observed:

50+

genus:

unknown

Species:

unknown

Observation Notes:

Noted specimens were gathering in groups under shrubs and large bushes, with an exception to some congregating near large mature maple trees. Approximately a dozen or more were found in a mowed grassy area.

Specimen Voucher Number:

Flash Behavior

First Flash Time:

21:20

Last Flash Time:

22:30

First Flash Temp (F):

84

Last Flash Temp (F):

84

Flashes in Pattern:

1

Flash Color:

Green

Flash Pattern Period:

5

Flash Duration:

0.5

Flash Interval:

2

Male Height Zone:

Moderate (3-8 ft)

Flash Location:

Approximately 3-5 feet above ground, residing primarily in shadowed areas or areas with low light pollution. Observed within the grassy “round about” of the neighborhood, as well as in the hedge bushes and the mowed, grass areas.

Male Flash Behavior:

Flashing for a brief, less than one full second glow, waiting a few moments, then flashing again. Rhythm was steady and appeared “unhurried”.

Female Flash Behavior:

NA, unsure of differences between the male and female flash patterns.

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