Observation: Pyractomena ecostata

Observation: Pyractomena ecostata

Primary Observer:

Richard Joyce

Event Date:

2025-07-14

Status:

Verified

Survey

Site Name:

Manahawkin Wildlife Management Area- Bridge to Nowhere

Province/State:

New Jersey

Event Date:

2025-07-14

Time of Day:

Night-Time

Start Time:

20:26

End Time:

22:20

Number of Observers:

3

Primary Observer:

Richard Joyce

Additional Observers:

Darlene Cavalier, Matthew Hencheck

Target Species Genus:

Pyractomena

Target Species Species:

ecostata

Location and Habitat

Location Accuracy (meters):

0-25

Habitat Type:

Tidal Marsh - Salt marsh or brackish marsh

Habitat Type Notes:

Salt marsh, dominated by short form Spartina alterniflora. Higher elevation areas along Stafford Avenue had Phragmites and groundsel (Baccharis halmifolia).

Elevation (meters):

0.5

Area Searched (hectares):

3.1

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): No
Glare (bright light causing visual discomfort): Yes

Artificial Light Notes:

Artificial light was visible in most directions, with some of the brightest lights coming from the Dorland Henderson Memorial Bridge.

Observation

Observation Type:

Flashing

Number Observed:

50+

Genus:

Pyractomena

Species:

ecostata

Observation Notes:

Pyractomena ecostata could be seen displaying in all directions, including in adjacent marsh within the Edwin B. Forsythe NWR. Lower density was seen in the trampled marsh north of the bridge.

Specimen Voucher Number:

Five male specimens collected

Flash Behavior

First Flash Time:

20:53

Last Flash Time:

22:20

First Flash Temp (F):

81

Last Flash Temp (F):

80

Flashes in Pattern:

1

Flash Color:

Green

Flash Pattern Period:

4.5-5

Flash Duration:

0.5

Flash Interval:

4-4.5

Male Height Zone:

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

Flash Location:

Over the salt marsh, at variable heights.

Male Flash Behavior:

Swooping, long (>0.5 second) green flashes, with flash periods ranging from 4-10 seconds at 80-81 degrees F, but mostly between 4 and 5 seconds.

Female Flash Behavior:

Not observed.

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 © 2025 The Xerces Society •1631 NE Broadway Street, #821 • Portland OR 97232 USA