Currently viewing the category: "March Flies and Lovebugs"
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Subject: Flying night bug
Location: Charlottesville, va
November 6, 2015 9:09 pm
This bug was a pest around the fire pit. Now they have come into the house. Any ideas?
Signature: Paula stith

Male March Fly

Male Fall March Fly

Dear Paula,
This is a male Fall March Fly, probably
Bibio longipes based on this description on BugGuide:  “Males are all black with swollen hind tarsi and are hard to distinguish from Bibio slossonae, the other common fall-flying species.”  BugGuide also notes:  “Large swarms consisting of males are common in the fall.”

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Subject: Unidentified bugs
Location: Catskill, NY
September 28, 2015 3:26 am
On Sept 27, 2015, I photographed these two enjoying the after sun on my car door in Catskill, NY. They seemed to be enjoying themselves and so was I! Love to know what they are.
Thanks!
Signature: Ken Tannenbaum

Mating March Flies

Mating March Flies

Dear Ken,
These are mating March Flies in the family Bibionidae, and they exhibit sexual dimorphism in that the head of the male is larger to accommodate the larger eyes.  We believe we have correctly identified your March Flies as
Penthetria heteroptera thanks to images posted to BugGuide where it indicates they are active in the fall, distinguishing them from most March Flies that appear in the spring.

What's That Bug? does not endorse extermination

Subject: Please help identify this.
Location: North West Ireland
May 24, 2015 4:32 pm
This is a bug that has 6 legs. It looks like it has a very small abdomen. The bug has been seen in Letterkenny, Co. Donegal, Ireland, including my bedroom window. There is a photo of it I took. I have been mystified by this insect and can’t find it anywhere online.
Signature: Justin Doherty

Male March Fly

Male St. Marks Fly

Dear Justin,
We believe this is a male, because of his big eyes, March Fly in the family Bibionidae.  Your individual looks similar to the image posted on the GoFlyFishingUK site.
  After visiting iSpotNature, we believe this is a St. Marks Fly, Bibio marci.

What's That Bug? does not endorse extermination

Subject: Need to identify this bug
Location: Rhode Island
May 15, 2015 9:14 am
for two days now there has been a huge number of these bugs suddenly appear in my back yard. No standing water. It is the middle of May here in Rhode Island
Signature: Sylvia

March Fly

March Fly

Hi Sylvia,
This looks like a March Fly in the family Bibionidae to us, and the large eyes indicate it is a male.  The March Fly family includes the infamous Love Bugs that are found in the south.  According to BugGuide:  “Adults emerge synchronously in huge numbers and often form dense mating aggregations. Males form loose “swarms” and copulate immediately with females as they emerge from the soil. After mating, female bibionines dig a small chamber in the soil with their fossorial fore tibiae, lay eggs, and die within the chamber (Plecia lay eggs on the soil surface). Adults are short-lived (3-7 days).”

What's That Bug? does not endorse extermination

Subject: I can’t identify this bug!
Location: South central Pennsylvania
May 11, 2015 4:45 pm
I found this on top of a water bottle cap this morning and I can’t seem to identify this
Signature: Thank you!

Male March Fly

Male March Fly

We are relatively confident we have correctly identified your male March Fly as Bibio femoratus, based on its resemblance to the individual in this image posted to BugGuide.

What's That Bug? does not endorse extermination

Subject: what kind of insect is this?
Location: southeastern Pennsylvania
May 10, 2014 3:45 pm
I was playing with my son in the yard, when I felt something crawling on my leg. I let it walk onto my hand, and then I put it on the bush…didn’t want to squash them, while they were mating :-)
We live in Southeast Pennsylvania, outside of Philadelphia. Photo was taken on May 09, 2014
Signature: Bob M.

March Flies

March Flies

Dear Bob,
These are March Flies in the family Bibionidae, and they are an example of extreme sexual dimorphism.  The male on the left has a large head and eyes, while the head and eyes on the female on the right are much smaller.  According to BugGuide:  “Adults emerge synchronously in huge numbers and often form dense mating aggregations. Males form loose “swarms” and copulate immediately with females as they emerge from the soil. After mating, female bibionines dig a small chamber in the soil with their fossorial fore tibiae, lay eggs, and die within the chamber (Plecia lay eggs on the soil surface). Adults are short-lived (3-7 days).”

Thank you for the quick reply. I appreciate the information, and your response.
Bob

What's That Bug? does not endorse extermination