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Photo#404887
Dark Fishflies Mating? - Nigronia serricornis - male - female

Dark Fishflies Mating? - Nigronia serricornis - Male Female
Barrie, Lake Simco, Ontario, Canada
December 31, 1969
I found these two motionless on the side of a small bridge by a creek in the woods. They had been in this position for at least 2 1/2 hours. Not sure how long they were like this before I found them, but hadn't moved at all since I saw them in the morning and returned a couple hours later with my camera. Once they parted, the smaller fly quickly flew off, and the other larger (female?) remained motionless for another half hour or so. Got some shot of possible fertilized egg that was on the backside of the larger fly. When ready, it started to move slightly and then walked along the railing. Not sure if it ever flew away.

Note that the smaller fly that is hanging upside down is also face up.

Images of this individual: tag all
Dark Fishflies Mating? - Nigronia serricornis - male - female Dark Fishflies Mating? - Nigronia serricornis - male Dark Fishflies Mating? - Nigronia serricornis - male - female Dark Fishflies Mating? - Nigronia serricornis - female Dark Fishflies Mating? - Nigronia serricornis - female Dark Fishflies Mating? - Nigronia serricornis - male

Moved
Moved from Nigronia fasciata.

date needs correction

ID
These are definitely Nigronia serricornis. The male has serrate antennae and both individuals have markings that resemble N. serricornis.

Moved
Moved from Dark Fishflies.

date
needs correction

Moved
Moved from ID Request.

Yvonne- That's because the
Yvonne-

That's because they are nocternal fliers.

 
Thanks!
Any idea if these are fasciatus or serricornis? Also, am I correct that the larger one is the female?
The smaller one flew away quite quickly after the two separated, but did have a weak flight pattern.

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