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Great Black Wasp - Sphex pensylvanicus

Great Black Wasp - Sphex pensylvanicus
Essex, Ontario, Canada
July 24, 2004
on Swamp Milkweed (Asclepias incarnata)

Images of this individual: tag all
Great Black Wasp - Sphex pensylvanicus Great Black Wasp - Sphex pensylvanicus

No tarsal-rake spines on the forelegs, 11 flagellomeres and 7 abdominal segments = ♂

Trypoxylon politum. superb im
Trypoxylon politum. superb images

Nope, sorry.
This is definitely a Sphex pennsylvanicus. For starters, Trypoxylon politum has white hind tarsi ("feet").

thats right. even the nest lo
thats right. even the nest looked different

tarsi are feet? i thought tarsi were the segments of the leg after the tibia?

You are correct.
The tarsi are indeed the last segments on the legs. I like to compare to human anatomy to help those who don't know the jargon (which is really hard, actually, as I'm learning new body parts all the time for which there is no human equivalent:-)

actually im beginning to writ
actually im beginning to write an article for bugguide about insect anatomy and function. trying to research it to the best of my abilities. i have written about pigmentation and the layers of the exoskeleton. in the process...

appreciate you correcting me. always the best to you

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