Distinguishing Bombus impatiens, bimaculatus, & griseocollis

This is the second part of the ID-a-thon bee presentation. Re-done in google slides, looks a lot better, will update the others in the series in this format.


Publicado el 20 de mayo de 2021 a las 01:51 AM por neylon neylon


Thank you! This level of detail is so helpful.

Anotado por sarahwilson1 hace cerca de 3 años

Thanks for checking it out.
I just noticed that google drive screwed up the layout I had, I'll try to fix that today.

Anotado por neylon hace cerca de 3 años

This is fantastic! And very helpful. I need to look for the first post now. Thank you so much for sharing this information. Cheers chd

Anotado por chdonati hace cerca de 3 años

Even though as a west coaster I'm likely to be dealing with different species, I am still finding these documents very valuable in demonstrating the types of fieldmarks to look for and examples of how to identify them on images. I find the comparative images extremely useful in this regard. Thanks so much for taking the time to create such an informative series of documents!

Anotado por wildnettle hace cerca de 3 años

I just re-did the the entry in google slides, it looks a lot better then it did.

Anotado por neylon hace casi 3 años


Anotado por chdonati hace casi 3 años

Looks fantastic!

Anotado por wildnettle hace casi 3 años

Thank you , It's now linked to my reference list and will be guiding me in the coming season.

Anotado por louc33 hace mas de 2 años

Wickedly, totally awesome guide. But do you know how many photos I have to go back through now?

Anotado por contrarianvulgarian hace mas de 2 años

Joel, thank you for the great guides you have put together on Bombus spp. They are very informative and helpful to those of use learning how to identify bees in the field.

Anotado por psking hace mas de 2 años

Excellent guide! Thanks so much for sharing this.

Anotado por scoutingforplants hace mas de 2 años

Excellent! Now I know what details to try to capture when photographing Bombus to get a positive ID.

Anotado por mnerrie hace mas de 2 años

Excellent tutorial! Thanks for taking the time to help others learn the differences among these bumblebees!

Anotado por zitserm hace mas de 2 años

I'm so glad this resource exists! All my field guide uses to distinguish B. impatiens and B. bimaculatus are the spots on T2. But then you IDed some of my bee observations as bimaculatus without me even having a decent view of the abdomen!
I have a question though. On the slide titled "Scutum (cont.) B griseocollis", the pictures all have large black spots on their scutum, but you state before that that they only have a small black spot. Are those pictures of impatiens or bimaculatus instead?

Anotado por spellecchias hace mas de 2 años

@spellecchias The left and middle pictures on that page are griseocollis males which can look a little different from the females. I should probably note that on the page. Thanks

Anotado por neylon hace mas de 2 años

Good to know, thanks!

Anotado por spellecchias hace cerca de 2 años

Superb reference information and supporting images. Thanks so much!!

Anotado por deanthompson hace 9 meses

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