What's That Bug? does not endorse extermination

Subject:  Mosquito / may fly / dragon fly with tail
Geographic location of the bug:  Long Island, NY
Date: 05/29/2018
Time: 01:43 AM EDT
Your letter to the bugman:  These long tailed flies are swarming our house.  They don’t move much. They just sit on the screens and doors -Many until they die. We’re presuming they hatched from dirty rain gutters from a house we just bought. Some seem to be coming from vents outside that lead to the attic.  Please don’t let them be in the attic… They have long curved bodies and long tails.  We have a newborn and are nervous about them getting in because there are thousands of them. It’s like a scary movie bug swarm. Hoping they hate human blood.  Are they a beneficial fly that will prey on a nuisance species or are they out to get us? Thank you.
How you want your letter signed:  Concerned new parents.

Mayfly

Dear Concerned new parents,
Other than being a nuisance when they are numerous, Mayflies like the one in the image you submitted are perfectly harmless and they will not harm you or your home.  The larvae of Mayflies are aquatic, so we suspect you are near some body of water.

I’m about half a mile from a river. But there was a lot of standing water all over this property before we took ownership of it.

What's That Bug? does not endorse extermination
Location: Long Island, New York

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