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Photo#1517934
Bibio genus march fly pair - Bibio vestitus - male - female

Bibio genus march fly pair - Bibio vestitus - Male Female
La Grande, Union County, Oregon, USA
May 8, 2018
It was a lucky break to find this pair of Bibio genus march flies "in copula". I was amazed to see this species' degree of sexual dimorphism. This pair was attracted to lights and discovered on my daily moth survey.

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Bibio genus march fly pair - Bibio vestitus - male - female Bibio genus march fly pair - Bibio vestitus - male - female

Moved
Moved from Bibio.

 
Thank you!
John,

Thank you for the species identification! That's great news!