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Site location |
A few weeks ago, while I was
tapping fallen cones under the lone pine in a northeast Seattle parking lot, one of the locals invited me to also tap the Douglas-fir (
Pseudotsuga menziesii) cones lying under the neighboring hedge. I passed on the opportunity since I was strapped for time that day. But once I realized that my pine cone sample
contained several penultimate
Ozyptila (Thomisidae) females, I was eager to return after enough time had elapsed that I might find some mature specimens.
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Sample site. Note 'lone pine'
in distance on right. |
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The fallen cone microhabitat |
Many hundreds of Douglas-fir cones lay beneath the hedge bordering the parking lot, their parent trees growing on the other side of the border fence. Most of the fallen cones on that side of the fence had been removed by maintenance workers, so I was sampling from a long, thin island of cones.
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Ozyptila praticola epigynum |
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Female O. praticola |
I tapped 50 cones and collected 8 spiders and 3 species, all introduced from Europe. And yes, one was a mature female
Ozyptila: O. praticola!
I presume that the juvenile
Ozyptila I collected today and a few weeks ago under the nearby lone pine are also
O. praticola since their coloration and patterning were the same as the female, but of course there is no way to know for sure. Rod Crawford first collected this species in Washington in 1976 from leaf litter on the University of Washington campus. I had tapped the species
once before from fallen
Pinus strobus cones in Seattle's Green Lake Park.
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Female Tenuiphantes tenuis |
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T. tenuis epigynum,
partially obscured |
The other identifiable species in today's sample were
Enoplognatha thoracica (Theridiidae) and
Tenuiphantes tenuis (Linyphiidae). I
recently tapped both species from fallen pine cones in Seattle's Woodland Park.
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