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Symphypleona - Sminthurinus

Symphypleona - Sminthurinus
Packwood, Lewis County, Washington, USA
January 17, 2019
Size: <1 mm
Probably closer to 0.5 mm than 1 mm. This is a third individual from Jan 17-18, 2019 on a section of outside wall roughly 4-foot square that included another two individuals within this time frame. This one has a definite bluish cast and light-colored legs that are clear rather than somewhat yellow. The first antennae segments look light-colored rather than dark and the antennae look lighter overall. Maybe juvenile? Enough difference for another species?

Images of this individual: tag all
Symphypleona - Sminthurinus Symphypleona - Sminthurinus Symphypleona - Sminthurinus


Sminthurinus nr niger

Thanks Frans. I'm trying to l
Thanks Frans. I'm trying to learn what to look for with all the different species to make a correct ID. Can you tell me what the key is to differentiating S. niger from S. atrapallidus? The thumbnail is to one you identified as S. atrapallidus, which I thought this one might also be.

Good to point this out!
My mistake. That is not atrapallidus...
The diff =
atrapallidus : antennae + legs distinctly more pale than body
nr niger : antennae + legs same colour of body
Problems to take into account :
1. pale specimens (possibly juveniles, or moulting specimens) of niger may show more pale antennae and/or legs.
2. niger records in the USA are currently not accepted by American authors. Therefore, all niger lookalike US specimens are to be considered as 'nr niger'.
We have to wait for a formal revision of both European as American lookalike niger specimens to solve this issue.

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