Images

Not a great specimen, but then again, the species is one we have seen only a few times... you get what you can take. As the name implies there MIGHT be a relationship between this species and golden rod. Is that true? Someone needs to look at little more deeply and perhaps look at the pollen on the bodies of these bees to make such declarations.

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A blueberry specialist. Look how long that face is...The space between the mandible and the eye is what bee heads often use to separate species. This Colletes validus has a huggggggeeee malar space...other Colletes species essentially have none, the mandible being directly at the base of the eye. Why?

Colletes nigrifrons, male, Yellowstone National Park, Wyoming

Colletes willistoni, male, Badlands National Park, South Dakota

Female Colletes compactus

Female Colletes compactus

South Carolina

South Carolina

A lovely nest parasite of Megachile (leaf-cutter bees)....from Franklin County, Virginia. Picture taken by Brooke Alexander. Photography Information: Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens, Twin Macro Flash in Styrofoam Cooler, F5.0, ISO 100, Shutter Speed 200.

Coelioxys alternata, Philadelphia, Pennsylvania, collected by Stephanie Wilson at the Morris Arboretum

Most Coelioxys look similar (don't you agree?), dulled gray black, heavily pitted, with strong patterns of popping white hair bands. Ah, but here, we have one arrayed in batmobile colors, glossy, midnight black with reduced pitting and purple/black wings.

The dark and mysterious nest parasite of Megachile xylocopoides, one of the few records for the state of Maryland, but more are expected as M. xylocopoides spreads northward. This specimen from Eastern Neck National Wildlife Refuge, Kent County.

The taper looks of a nest parasite of Megachile. This is Coelioxys gilensis. Found in Yosemite National park and collected for a project done by Lauren Ponisio examining the effect of fire diversity on bees (Ponisio et al. Global Change Biol. 2016).

Super rare. Only a few individuals of this species have been found, but, interestingly, this species has been found twice in Missouri, and once in Pennsylvania, New Jersey, and Florida. This one was sent to me by Mike Arduser and collected in Clark County, Missouri. Note the lovely flair of hairs around the end of the abdomen....very distinctive.

Super rare. Only a few individuals of this species have been found, but, interestingly, this species has been found twice in Missouri, and once in Pennsylvania, New Jersey, and Florida. This one was sent to me by Mike Arduser and collected in Clark County, Missouri. Note the lovely flair of hairs around the end of the abdomen....very distinctive.

East Coast, West Coast, this parasitic species, Coelioxys octodentata occurs throughout the United States, almost completely filling the country with records and stopping at the border for some reason. How closely related are the specimens on the Pacific edge versus the Atlantic? Unknown, but for now they are just one species. Red legs are classic C.

Super cool, Super rare, Super fun. Who would say such a thing about a little brown bee? In this case it is Colletes ciliatus. Here is a bee that was featured in a paper we wrote several years ago as one of the "missing bees" not seen for many years.

Colletes compactus is a late fall Colletes, specializing on things like goldenrod. Colletes is an interesting group....different species coming out throughout the year and many of them highly specialized in what they gather pollen from. They perhaps are all specialists, but some are quite rare and so we know little (a common story).

Colletes compactus is a late fall Colletes, specializing on things like goldenrod. Colletes is an interesting group....different species coming out throughout the year and many of them highly specialized in what they gather pollen from. They perhaps are all specialists, but some are quite rare and so we know little (a common story).

Colletes inaequalis, female, Prince George's County, Maryland