Peter Abrahamsen

Έγινε μέλος στις: Δεκ 07, 2017 Τελευταία δραστηριότητα στις: Απρ 19, 2024 Μηνιαίος Υποστηρικτής από Νοέμβριος 2021

From Seattle, trying to pay more attention to the variety of life in the Pacific Northwest and around the world. I have little formal training, and appreciate identification tips, trivia, and corrections.

I do heuristic identifications of commonly observed species in Western Washington as part of "triage" identification. I will often withdraw an ID in the face of credible disagreement and stay quiet on a taxon until I've learned more.

I often post from the field, then narrow my identifications after further research with the benefit of a monitor.

Primary photography gear:

  • Olympus E-M1 Mark III (micro four-thirds)
  • Olympus M.Zuiko 40-150mm f2.8
  • Olympus M.Zuiko 60mm Macro
  • Godox TT685O II Flash



I use the Burke Herbarium to learn more about species characteristics, range, and to see representative photos.

I am a member of the Washington Native Plant Society. Their website is a great starting point for resources, connecting to people, lectures, and species checklists for Washington hikes.

Other resources:


I am a member of the Washington Native Bee Society". This is a relatively new organization, with lots of energy. Check out the website and come to monthly meetings to get find your starting point with bees.

I also volunteer with both the Xerces Society's PNW Bumble Bee Atlas and the Washington Department of Agriculture's Washington Bee Atlas to identify and map native bee species. We think Washington might have around 700 species of bee, many of them currently unknown or undescribed.

Agapostemon. In Washington, all are subgenus Agapostemon. In the Seattle area:


Bumblebees (Bombus spp.)

If I IDed your female bumblebee in Western Washington as Pyrobombus rather than B. vosensenskii, it's probably because I need a few of the underside (the stergites) to distinguish it from B. caliginosus. If the bee is male (no corbiculae, or it has some yellow on T5), I don't know enough to distinguish the species in any case.

A view of the hair on the front of the head is also necessary to distinguish these species from B. californicus in this region.


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