~10mm. Slightly faster than one second flash. Hundreds in the top of a Betula nigra at 10pm. Temperature about 80 F.
Single flashes every 0.8 seconds at 82 degrees Fahrenheit; Total length at 12mm; Weather: clear, no wind, and mGDD starting from February 1 was 2330.
Pronotum not quite right but flashed every 1 sec while in flight
Time: 11:08 p.m., 2 hours after sunset
Location: Flying 5'-6' high over prairie grades and forbs
Flash color (perceived): Green
Flash pattern: Once per second continually in flight. Flash was slightly bifurcated when viewed by the side (this asynchronous flash pattern was described by Lloyd [2018] as "hitched").
Temperature: ~73° F (per weather station)
Humidity: ~86% (per weather station)
Wind: Low
MGDD: 1391
Light pollution: Bortle class 5
Notes: Per Lloyd (2018), only other Photuris with similar, hitched flash pattern is Photos bridgeniensis, which has dark coxae, while Photuris hebes has pale coxae (like this specimen). Like previous Photuris hebes captured (and unlike many other Photuris species) this individual did not flash madly after being captured.
Location: Flying over lawn near pond where other fireflies with similar flash pattern were displaying.
Flash color (perceived): Yellowish-green
Flash pattern: Aproximately 1 quick flash per second (of apparently indeterminate number)
Temperature: ~74° F
Humidity: ~75%
Wind: Still
MGDD: 1223
Notes: Did not blink as much as most Photuris when caught. Netted and released unharmed. No elytral vittae visible (although dorsal photo looks like it on one elytron because of the angle of my light source), but fairly light coloration underneath. That, plus small size and flash pattern, seems a good match for Photuris hebes.
Provisionally identifying this as Photuris hebes. The flash pattern consisted of a single flash repeated every ~1 second at 70 degrees Fahrenheit. Many individuals flashed near bushes and trees. The total length of the photographed individual was 12mm. Partly cloudy, no wind, and mGDD starting from February 1 was 1805.
Dozens of Photuris flashing every ~1.5 seconds while flying within trees along a wetland. 61 degrees Fahrenheit, overcast, no wind and mGDD from February 1 was ~1487.
Numerous individuals displaying within a weedy opening along a creek. They also flashed amongst the bordering trees. The flash pattern consisted of single ‘hitched’ flash every 1 second at 72 degrees Fahrenheit. The photo shows the flashes of two individuals (lower center-left), and the ‘hitch’ is almost noticeable. Based on Lynn Faust’s book, this population may be a bit early (i.e. she suggests they become active around 1500 mGDD). The mGDD from February 1 was ~1320. The individual photographed was 12mm in length. Other weather attributes were no wind and partly cloudy skies.
Interupted CPM - west TN. Collected (and released) from low branches of a white ash tree in a disturbed area. This individual was resting and flashing repeatedly but no others were seen.
Det. B. F. Pfeiffer, 2017
coll'ed by B. F. Pfeiffer @ 10:30 pm, 67dF
spmn in the BFPC, New Braunfels, TX
This is a rather small Photuris that lacks the stripe on the elytra. I’m pretty sure this is the specie I see endlessly single blinking, about one per second, around my trees.
This firefly was caught while flying over a grassy field, a few feet above the ground, and emitting a long series of brief, rapid flashes less than one second apart. The flashes seemed less bright than those of other nearby Photuris fireflies.
2 seconds between short flashes while flying about five feet above tall grasses. This was the most common species out, starting at 9:06 pm and still going strong when I stopped watching at 9:36 pm. When just starting, perched on plants, the flashes often had longer pauses between (3 to 6 seconds).
Grid squares 1/4 inch. Temperature 65 F.
This particular firefly was making short flashes with 6 second pauses between at 73 F. However, I caught it just as they started flashing for the night and most of the other Photurises had 2 second pauses. So I suspect that might have been a not-quite-normal flash pattern.
Grid - 1/4 inch squares.