Currently viewing the category: "Mason Bees and Leafcutter Bees"
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Subject: Carpenter bee?
Location: Albuquerque, NM
July 10, 2017 12:48 pm
Hi – This bee was climbing in a hole the size of my pinkie in a wooden overhang. It was painted, but im not sure if the bee created this hole or the prior owner had drilled a hole leaving exposed wood. It was striped and where he was chewing, the wood began to swell. he never went fully in, just around the edge. I filled the hole with caulk and he went away. Thia is in Albuquerque, NM at about 5500 ft elevation in the hills. It was taken in June.
Signature: KJ

Mason Bee

Dear KJ,
This looks to us like a Mason Bee in the family Megachilidae, possibly
Lithurgopsis apicalis which is pictured on BugGuide.  Of the family, BugGuide notes:  “Some are leaf-cutters, nesting in ground, in cavities, wood. Tunnels are bored in wood or in the ground. Cell is provisioned with pollen (and nectar?), an egg laid, and cell is sealed over with circular pieces of leaves, clay or other materials that fit tightly into cavity.”

Mason Bee

What's That Bug? does not endorse extermination

Subject: Bee or fly identification
Location: Southern Tanzania
December 31, 2016 5:58 pm
Can you please identify this bee/fly?
Signature: Helen

Probably Mason Bee

Probably Mason Bee

Dear Helen,
Because it so resembles the Giant Resin Bee, we thought your Bee (definitely NOT a fly which would only have two wings) might also be a Mason Bee in the genus
Megachile.  We located many similar looking Mason Bees on iSpot including this individual and this individual.

What's That Bug? does not endorse extermination

Subject: Sweat Bee/Hover Fly
Location: Linn Co., Oregon
October 18, 2016 11:06 pm
These photos were taken near the end of July on Browder Ridge, Oregon. I would appreciate an
identification.
Signature: D. Gudehus

Bee

Probably Wool Bee

Dear D. Gudehus,
We do not recognize this pretty and distinctive Bee.  We are posting it as unidentified and perhaps we will be able to research its identity when we return to the office.  We are leaving for the airport in two hours.  Perhaps one of our readers will write in with an identification.  It does not appear to be on Common Bee Pollinators of Oregon Crops.

Bee

Probably Wool Carder Bee

What's That Bug? does not endorse extermination

Subject: Potter/Mason wasp?
Location: South Florida
September 7, 2016 8:14 pm
Sept 7, 2016 in my backyard I noticed a black and white bee-sized critter nectaring on Spanish Needle flowers. I hadn’t seen its like before and while I think it’s something in the Potter/Mason wasp tribe I was unable to locate any images on the ‘net that matched it.
Signature: Curious in Florida

Modest Cuckoo Leaf-Cutter Bee

Modest Cuckoo Leaf-Cutter Bee

Dear Curious in Florida,
Based on images posted to BugGuide, we believe we have correctly identified your Modest Cuckoo Leaf-Cutter Bee,
Coelioxys modesta.  According to BugGuide, the range is:  “Nebraska to Quebec and the New England states, south to Texas and Florida.”  According to Nature Search:  “This cleptoparasitic bee is approximately 3/8” in length.  The head is large and black with black eyes.  The thorax is black with light gray and black colored fuzz.  The abdomen is black with thin white bands.  Females have a pointed abdomen and males have tooth-like projections at the tip of the cone-shaped abdomen” and “This species is cleptoparasitic on other bees in this family.  The female uses her pointed abdomen to break into Megachile nests.  She removes the host egg and lays her egg in the nest.  The larva kills the occupant and then eats the pollen and nectar stores intended for the offspring of its host.  The female lacks the pollen brush under the abdomen typical of other bees in this family.”

Modest Cuckoo Leaf-Cutter Bee

Modest Cuckoo Leaf-Cutter Bee

Thank you! I had dismissed it as a bee because it was not gathering pollen and because the wings seemed wasplike. Live and learn. :^) I appreciate your generous sharing of information on all the unappreciated creeping, crawling and flying critters of the world.

Modest Cuckoo Leaf-Cutter Bee

Modest Cuckoo Leaf-Cutter Bee

What's That Bug? does not endorse extermination

Subject: Small yellow and black bees in my bathroom
Location: Northeast Ohio
August 5, 2016 11:01 am
Hi bugman,
We are in the suburbs of Akron, Ohio, near Cuyahoga Valley National Park. We’ve had several very small bees come in through our bathroom exhaust fan. They are 1 cm long and have broken yellow stripes across their back. Most of them are dead by the time we Find them on the bathroom floor, but we have relocated 2 living bees back to the great outdoors. Those 2 seemed very docile. I’m an environmental educator but I can’t find this little bee in my guides or in my memory banks. Can you help me identify them please?
Signature: Cuyahoga Claudia

European Wool Carder Bee

European Wool Carder Bee

Dear Cuyahoga Claudia,
This is an introduced European Wool Carder Bee,
Anthidium manicatum, which you can verify by comparing your images to images of living individuals on BugGuide.  According to BugGuide:  “Females collect “wool” from downy plants such as Lamb’s Ears to line their nest cavities” and “Introduced from Europe before 1963; spreading throughout NE. & W. NA”.  The fact that it is an imported species may account for its lack of inclusion in guide books.

European Wool Carder Bee

European Wool Carder Bee

Thank you so much! I came across a picture of a wool carder bee shortly after I sent in my message and thought it was the closest I had seen, but I still wasn’t sure. I hope they stop flinging themselves to their death through my exhaust fan- they’re beautiful little bees!
Thanks again,
Claudia

What's That Bug? does not endorse extermination

Subject: Washington State Solitary Bee
Location: Washington, USA
June 23, 2016 11:40 pm
I found this odd unfurred black bee roaming around while we were planting flowers, and we figured it must be some sort of solitary bee, as there was only one at the time.
Signature: Wesley Grubbs

Leaf Cutter Bee

Leaf-Cutter Bee

Dear Wesley,
We believe this is a Leaf-Cutter Bee in the genus Megachile, a large and diverse genus.  It resembles the image of
Megachile relativa which is pictured on BugGuide, and the species has been reported from nearby British Columbia.

What's That Bug? does not endorse extermination