Images

A pair of head shots...including the rarely seen underside of a bee head. The species: Megachile campanulae. From: Anne Arundel County, Maryland. Status common and regular if you swing a net in the summer. Megachile always have lovely omatidia (those lovely hex things on the compound eyes).

From the Adirondacks of New York comes Megachile centuncularis. Sadly, it is an invasive species that can be quite common in northern cities across the U.S. as well as throughout the northern part of the globe. Maybe that is why it is so successful, it likes our holes.

From the Adirondacks of New York comes Megachile centuncularis. Sadly, it is an invasive species that can be quite common in northern cities across the U.S. as well as throughout the northern part of the globe. Maybe that is why it is so successful, it likes our holes.

Not originating from here. This is Megachile centuncularis, from studies by MaLisa Spring in Cleveland. Cleveland and other large cities house more than their share of non-native species largely or likely because of the presence of so many non-native weeds and garden introductions.

Not originating from here. This is Megachile centuncularis, from studies by MaLisa Spring in Cleveland. Cleveland and other large cities house more than their share of non-native species largely or likely because of the presence of so many non-native weeds and garden introductions.

We almost never show the undercarriage of a bee....but, here you go. A Megachile from Morocco that is in the Chalicodoma subgenus, group, or sometimes full blown genus depending upon your taxonomic proclivities.

A Megachile from Morocco that is in the Chalicodoma subgenus, group, or sometimes full blown genus depending upon your taxonomic proclivities. Characteristically the females do not cut leaves to line the nests but use resin or mud and thus do not have the scissors-like cutting edges on their mandibles. This nicely arrayed species is from Iran.

A Megachile from Morocco that is in the Chalicodoma subgenus, group, or sometimes full blown genus depending upon your taxonomic proclivities. Characteristically the females do not cut leaves to line the nests but use resin or mud and thus do not have the scissors-like cutting edges on their mandibles. This nicely arrayed species is from Iran.

Hawaii was colonized once by a single species of Masked Bee (Hylaeus), and evolved and split into dozens of species. Subsequent to Polynesian and European colonization a steady progression of non-native plants and bees have invaded.

Hawaii was colonized once by a single species of Masked Bee (Hylaeus), and evolved and split into dozens of species. Subsequent to Polynesian and European colonization a steady progression of non-native plants and bees have invaded.

Hawaii was colonized once by a single species of Masked Bee (Hylaeus), and evolved and split into dozens of species. Subsequent to Polynesian and European colonization a steady progression of non-native plants and bees have invaded.

Sara Prado found this Megachile concinna in agriculture fields in her Puerto Rico studies. Is it native to P.R.? Nope. It is a tramp species that shows up in different places from its homeland in the Mediteranean. Photo by Brooke Alexander.

Megachile concinna, Female, mandibles, Dominican Republic, 2012 March

Sara Prado found this Megachile concinna in agriculture fields in her Puerto Rico studies. Is it native to P.R.? Nope. It is a tramp species that shows up in different places from its homeland in the Mediteranean. Photo by Brooke Alexander.

Sara Prado found this Megachile concinna in agriculture fields in her Puerto Rico studies. Is it native to P.R.? Nope. It is a tramp species that shows up in different places from its homeland in the Mediteranean. Photo by Brooke Alexander.

Megachile concinna, Hispaniola, Dominican Republic, female

Here is a small leaf cutter from Puerto Rico. However, it is not native to P.R. but likely inadvertently introduced through its habit of nesting in holes in wood...which could be holes in pallets or packing crates. Found is scattered locations around North America and even in Hawaii.

Here is a small leaf cutter from Puerto Rico. However, it is not native to P.R. but likely inadvertently introduced through its habit of nesting in holes in wood...which could be holes in pallets or packing crates. Found is scattered locations around North America and even in Hawaii.

Here is a small leaf cutter from Puerto Rico. However, it is not native to P.R. but likely inadvertently introduced through its habit of nesting in holes in wood...which could be holes in pallets or packing crates. Found is scattered locations around North America and even in Hawaii.

A sweet little leaf cutter from Tucson Arizona, Megachile coquilletti is a hole nester and I imagine like its sister taxi in the East probably is happy to nest in people's yards and benefits from rich plantings of desert and dry country native plants. Collected by Tim McMahon and picturated by Elizabeth Garcia.

This is Megachile coquilletti, a small bee from Yolo County in California. "This bee was collected in the California Central Valley in Yolo County for research on small-scale restoration in agricultural areas. Claire Kremen's 10-year study of hedgerows shows the benefits of planting native shrubs and forbs in agricultural areas for native bees.