Images

Coelioxys coturnix, male, Cumberland, July 2012, Maryland

First Maryland state record for this species as represented by this male from Eastern Neck National Wildlife Refuge on a wee island in the Chesapeake Bay. As a Coelioxys it is going to be a nest parasite of Megachile...in this case it is going after Megachile petulans....a species with a more southern distribution.

First Maryland state record for this species as represented by this male from Eastern Neck National Wildlife Refuge on a wee island in the Chesapeake Bay. As a Coelioxys it is going to be a nest parasite of Megachile...in this case it is going after Megachile petulans....a species with a more southern distribution.

Coelioxys hunteri, male, a bee that is a nest parasite of leaf cutting bees. This is just the specialized and distinctive end of this lovely bee. Jones County Georgia, obtained form the USFS Experiment Station...

I think this was the first confirmed state record (Maryland) for this species (Coelioxys immaculata). It was found in Caroline County in a sandy area. Not clear what it is a nest parasite of (almost certainly a Megachile). Something for someone to do....good amateur project. Picture by Amanda Hong.

Coelioxys....invader of Megachile nests. This female is designed to slice into Meg nests and insert and egg which later will kill the baby leaf cutter and consume the food. This one is from the Southwest, Coelioxys novomexicana. This bee was collected in the California Central Valley in Yolo County for research on small-scale restoration in agricultural areas.

A nest parasite, this time a male. Coelioxys octodentata is a counterpart to the more commonly found C. sayi. I associate this species with drier and perhaps sandier locations, perhaps as the nest parasite of things like Megachile brevis. Note the characteristic teeth sticking out of the rear of this bee.

A nest parasite, this time a male. Coelioxys octodentata is a counterpart to the more commonly found C. sayi. I associate this species with drier and perhaps sandier locations, perhaps as the nest parasite of things like Megachile brevis. Note the characteristic teeth sticking out of the rear of this bee.

An invader of other bees nests, this is Coelioxys porterae, found, in this case from Acadia National Park in Maine. I can't recall which species of Megachile (leaf cutting bees) this species parasitizes us but there are plenty of options in the park. This is a male, and as with almost all males it has all kinds of pointy projections on its rear end.

Coelioxys porterae, male, Maine, Acadia National Park

Another Coelioxys nest parasite bee from the Adirondack Mountains of New York. This one is a nest parasite of big Leaf Cutters like Megachile latimanus. Here are shots of a male and a female.

The most common of the Coelioxys nest parasites in the mid-atlantic region. This is C. sayi, in this case, a male and simply a mating machine, not involved in nest construction. Check out the multi-pointed rear end. I am unaware of what use this is, but most of the Coelioxys males have some variant of this unusual pattern. Photographed by Ashleigh Jaoobs.

The most common Coelioxys in the East. C. sayi is a nest parasite, slipping into the nests of leaf cutters like Megachile mendica and kin and dropping an egg into the wall of their nests. In the female, like this one, the edge of the clypeus is slightly indented (hard to see). Now you know.

Chilimalopsis parvula - according to Laurence Packer (world's expert on the bees of Chile) this is a range extension of this species, mapped specimens seem to indicate that it mostly have been captured well to the north of Santiago and we spent all our time to the South on the expedition. Anders Croft took the pictures.

Manuelia postica - One of the common Chilean species of bees, this one was collected somewhere in southern Chile while on expedition last fall with Laurence Packer. Photograph taken by Anders Croft.

A lovely dark Centris with blue highlights and a cape of white. Eyes like coals. What is it thinking? Collected with Laurence Packer while we toured southern Chile and Patagonia sleeping by the side of the road, in the woods or in pastures. Did anyone care. No. Chile is cool. Photo by Kelly Graninger.

A lovely dark Centris with blue highlights and a cape of white. Eyes like coals. What is it thinking? Collected with Laurence Packer while we toured southern Chile and Patagonia sleeping by the side of the road, in the woods or in pastures. Did anyone care. No. Chile is cool. Photo by Kelly Graninger.

Always good for a lingering look is the glitzy Chrysidid Wasp group. I am not sure what species this is but it was found during Adirondack ATBI bioblitz this past week and was used to demonstrate the camera set up for the crowd. A nest parasite, usually of hymenoptera, one has to wonder ... why so metallic Mr. Wasp? Stack taken by Dejen Mengis.

Cleaning up my backlog....the head of a very small Chrysidid Wasp...a nest parasite or cleptoparasite of other insects...often bees and wasps. Maryland. Picture taken by Brooke Alexander

A small Centris species taken by Sara Prado in Puerto Rico

The tail ends of Centris are often brightly colored...surely there is a function, and a reason, but why does it often appear to us to also be beatutiful?Another Caribbean bee collected from Puerto Rico by Sara Prado. A lovely male. Photographed by Brooke Alexander.