JessM wrote:
Bill, I had to look that one up -- to find that there is a sexual dimorphism in this species, the diagnostic key being the clypeus, with is yellow (or probably sometimes ivory) in the male. See the upper left inset photo here, in which the clypeus is yellow:
https://cjai.biologicalsurvey.ca/bmc_05/bmc05images/general/a04-1.jpgThis dimorphism occurs in lots -- if not all -- bees as well. Here's a diagram of insect "faces."
https://en.wikipedia.org/wiki/ClypeusI'm willing to bet you're right about size difference though, as it's pretty common among insects.
Thanks for the nice catch.... 73... ~jessM
PS: If I'm beginning to sound like a field biologist, just ignore the sign. My undergrad training was in biology, but the rest of it was in mammalian physiology and biochemistry, all pretty much useless in this hobby … :-(
Bill, I had to look that one up -- to find that th... (
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I think, since we touched on sexual dimorphism, that a bit more info may be useful. I am moving this to main photo discussion so as to not hijack this post. My thoughts and a few observations on the why's.
Bill
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