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Colletes aestivalis. Rare? or Not Rare? This is a Heuchera specialist. Heuchera is planted everywhere, why is the species not seen and seen by some as a potential species of concern. A few things pilgrim.

Colletes aestivalis. Rare? or Not Rare? This is a Heuchera specialist. Heuchera is planted everywhere, why is the species not seen and seen by some as a potential species of concern. A few things pilgrim.

Colletes aestivalis. Rare? or Not Rare? This is a Heuchera specialist. Heuchera is planted everywhere, why is the species not seen and seen by some as a potential species of concern. A few things pilgrim.

Rare. This bee (Colletes aestivalis) is rarely seen these days. I have never collected one despite it being recorded in Maryland in the far distant past. So it was nice to see this specimen from Shenandoah National Park in Virginia collected by Jessica Rykken in her studies of the Park's bee fauna. Good news.

Rare. This bee (Colletes aestivalis) is rarely seen these days. I have never collected one despite it being recorded in Maryland in the far distant past. So it was nice to see this specimen from Shenandoah National Park in Virginia collected by Jessica Rykken in her studies of the Park's bee fauna. Good news.

Rare. This bee (Colletes aestivalis) is rarely seen these days. I have never collected one despite it being recorded in Maryland in the far distant past. So it was nice to see this specimen from Shenandoah National Park in Virginia collected by Jessica Rykken in her studies of the Park's bee fauna. Good news.

Colletes brevocornis, and uncommonly collected species, one that I associate with dry open areas, it is perhaps a specialist on Venus looking glass in the campanulae family. Difficult to say, since so few have been collected but that is our best guess at this time.

Colletes brevocornis, and uncommonly collected species, one that I associate with dry open areas, it is perhaps a specialist on Venus looking glass in the campanulae family. Difficult to say, since so few have been collected but that is our best guess at this time.

Colletes brevocornis, and uncommonly collected species, one that I associate with dry open areas, it is perhaps a specialist on Venus looking glass in the campanulae family. Difficult to say, since so few have been collected but that is our best guess at this time.

Colletes brevocornis, and uncommonly collected species, one that I associate with dry open areas, it is perhaps a specialist on Venus looking glass in the campanulae family. Difficult to say, since so few have been collected but that is our best guess at this time.

Chino Farms Maryland....they are restoring their grasslands and open land on what I think is the largest farm in Maryland;and as a bonus they got a specimen of the very rare Colletes brevicornis. Hannah and Ashleigh, new interns from my lab took this picture...good job.

Chino Farms Maryland....they are restoring their grasslands and open land on what I think is the largest farm in Maryland;and as a bonus they got a specimen of the very rare Colletes brevicornis. Hannah and Ashleigh, new interns from my lab took this picture...good job.

Chino Farms Maryland....they are restoring their grasslands and open land on what I think is the largest farm in Maryland;and as a bonus they got a specimen of the very rare Colletes brevicornis. Hannah and Ashleigh, new interns from my lab took this picture...good job.

Colletes cariniger: one of the larger early spring species and also one of the more common species in its genus in Greece. The females seen commonly foraging for pollen in fields full of composites like chamomile, mayweed and ragwort. This one was collected by Jelle Devalez on the Aegean Islands. Photograph by Brooke Alexander.

Colletes cariniger: one of the larger early spring species and also one of the more common species in its genus in Greece. The females seen commonly foraging for pollen in fields full of composites like chamomile, mayweed and ragwort. This one was collected by Jelle Devalez on the Aegean Islands. Photograph by Brooke Alexander.

Colletes cariniger: one of the larger early spring species and also one of the more common species in its genus in Greece. The females seen commonly foraging for pollen in fields full of composites like chamomile, mayweed and ragwort. This one was collected by Jelle Devalez on the Aegean Islands. Photograph by Brooke Alexander.

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.

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.

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).