Spider In The Pocket

On this day in 1854, Henry David Thoreau observed "A willow coming out fairly, with honey-bees humming on it, in a warm nook,---the most forward I have noticed, for the cold weather has held them in check. And now different kinds of bees and flies about them. What a sunny sight and summer sound!"

Here in Northfield, half a continent west of Concord, Massachusetts, and more than a century and a half on, the surprise is that the year progresses in so like a manner as Thoreau's. Unfortunately no similar, early records exist for this part of Minnesota. No baseline inventory of species. No detailed phenological data. The best we can do is begin to assemble that information. Recently Richard Primack set about collecting data for comparison to Thoreau's data. He summarized his findings in the book Walden Warming. The ice on Walden Pond goes out earlier, wildflowers bloom earlier, migrant insects and birds arrive earlier. Everything seems to happen earlier than in Thoreau's day. The change in climate is indisputable.

Contrariwise, the cold continues to hold the willows and early native bees in check (even while it loses ground in the long run). Today is just as overcast, though not quite as rainy, and slightly colder. So I was happy to have a spider to photograph. Yesterday, while at the St Olaf Natural Lands, I looked over some recently cut down trees in one of the road ditches. Under a loose piece of bark I discovered a spider inside a loose web. I collected it in a vial, put it in my pocket and brought it home to photograph. The arrangement of eyes and the tubular spinnerets put it in the superfamily Gnaphosoidea, the Ground Spiders.

Publicado por scottking scottking, 21 de abril de 2017


Fotos / Sonidos




Abril 20, 2017 09:37 AM CDT


Ground Spider
found under bark of fallen tree
St Olaf Natural Lands
Northfield, Minnesota


There's always Texas...maybe a weekend trip to hold you over. ;) Even in North Texas we had almost 50 species ( http://www.inaturalist.org/observations?captive=any&place_id=any&project_id=10752&subview=table&taxon_id=47792&verifiable=any&view=species ) of dragonflies observed for the City Challenge.

But...we could use more people who believe the change in climate is "indisputable", as you put it.

Publicado por briangooding hace más de 5 años (Marca)

Thanks for the invite, Brian. Wish I could swing a trip to Texas. 50 species sounds like such abundance, especially as we're setting solidly at just one species right now. Maybe Sympetrum corruptum will show up and we'll have two. All best, from the warming north.

Publicado por scottking hace más de 5 años (Marca)

Agregar un comentario

Acceder o Crear una cuenta para agregar comentarios.