Album of Tilton River Forks Area Field Trip

Selected photos by Rod Crawford from the 22 May 2026 spider collecting trip (with Kathy Whaley and Jerry Austin) to sites near the confluence of North and main forks Tilton River, Lewis County, Washington. We collected in two contiguous but different-aged clearcuts adjacent to Jefferson Creek and a younger treeless grassy field in one of them, and found the spider fauna exceptionally rich; then we supplemented that with a sample from a mature but largely deciduous forest to the south, also reasonably rich, ending with a great sample of 52 species, including some very interesting species!
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2022 NAIP aerial view of Jefferson Creek spider sample site, Lewis County, Washington parking place at edge of grass field, Jefferson Creek spider sample site, Lewis County, Washington
Aerial view of our site E of creek with 2 clearcuts & field  (NAIP, 2022) Our car parked by the 2022 grassy field                   © Rod Crawford
dates of clearcuts/clearing, Jefferson Creek spider sample site, Lewis County, Washington understory in riparian buffer, Jefferson Creek spider sample site, Lewis County, Washington
Dates of clearcuts and clearing         (NAIP, 2022) Understory in Jefferson Creek riparian buffer                  © Rod Crawford
grass in 2022 field, Jefferson Creek spider sample site, Lewis County, Washington 2022 grassy field, Jefferson Creek spider sample site, Lewis County, Washington
Spider-rich grass in field               © Rod Crawford 2022 grassy field that Kathy swept                      © Rod Crawford
spider Theridion differens, Jefferson Creek spider sample site, Lewis County, Washington spider Tmarus angulatus, Jefferson Creek spider sample site, Lewis County, Washington
Theridion differens from my 2012 trees    © Rod Crawford Tmarus angulatus from Jerry's 2019 trees                   © Rod Crawford
shade among 2012 trees, Jefferson Creek spider sample site, Lewis County, Washington scene in 2012 clearcut, Jefferson Creek spider sample site, Lewis County, Washington
Shade among 2012 regrowth trees            © Rod Crawford Scene in the 2012 clearcut                     © Rod Crawford
cutleaf blackberry, Jefferson Creek spider sample site, Lewis County, Washington himalayan blackberry and Scots broom, Jefferson Creek spider sample site, Lewis County, Washington
Cutleaf blackberry,…                 © Rod Crawford …Himalayan blackberry and broom, oh my!                © Rod Crawford
Jefferson Creek in its ravine, Jefferson Creek spider sample site, Lewis County, Washington bridge over Jefferson Creek, Jefferson Creek spider sample site, Lewis County, Washington
Jefferson Creek in its ravine                © Rod Crawford Bridge over Jefferson Creek                  © Rod Crawford
2024 NAIP aerial view, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington fern understory, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington
Our forest site on Dodge Road at red dot     (NAIP, 2024) Fern understory in Dodge Road forest                        © Rod Crawford
tree trunk moss, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington leaf litter, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington
Tree trunk moss                © Rod Crawford Maple litter by Dodge Road                        © Rod Crawford
mossy tree trunks, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington rare male spider Usofila pacifica, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington
Mossy alder trunks                © Rod Crawford Extremely rare male of Usofila pacifica                         © Rod Crawford
crab sider Xysticus montanensis from roadside verge, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington Jerry Austin sifting moss, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington
Kathy's Xysticus montanensis          © Rod Crawford Jerry Austin sifting moss                         © Rod Crawford
unidentified Grammonota spider from Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington female spider Dismodicus #1 from Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington
Unidentified Grammonota          © Rod Crawford Mature female Dismodicus sp. #1                        © Rod Crawford
grassy abandoned roadbed, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington female spider Spirembolus abnormis, Dodge Road forest south of Hwy 508 and Tilton River, Lewis County, Washington
Grass-grown unused roadbed            © Rod Crawford Spirembolus abnormis                         © Rod Crawford


This page last updated 15 July, 2026