This spider was found in my office earlier in the week.
Agelenidae page at BugGuide
Preliminary Checklist to the Spiders of Minnesota
Friday, November 16, 2018
Linden Loopers are a fall moth in the Geometridae, or Inchworm family.
Linden Loopers are adapted for remaining active in colder weather, when most other insects are inactive. In one study (cited below) of another cold-adapted Geometrid moth, the Winter Moth, Operophtera brumata, it was noted that the flight muscles operate at lower temperatures and that they have a higher flight muscle to body mass ratio than a warm-adapted moth.
The female Linden Looper Moths are flightless, which is the case for a number of cold weather Geometrids. By losing the ability to fly, they have more energy to devote to egg production.
Even with these adaptation, being an insect active in the cold is a physiological challenge. The advantage is that there are fewer insect predators present in the colder months of fall
Marden, James H. 1995. Evolutionary Adaptation of Contractile Performance in Muscle of Ectothermic Winter-Flying Moths. The Journal of Experimental Biology. 198, 2087 - 2094.
Sunday, October 14, 2018
This afternoon I sit at a desk by the window the Hermit Thrushes flutter up from the ground to nab a berry, sometimes perching for a bit within view.
Snow fell in the morning. As the backyard garden disappeared under a thin layer of white and the thrushes kept coming for berries I had the satisfying sense that all my hours of work in the garden were for these Hermit Thrushes.
Seeing the berries eaten by these birds gives me a sense of completion for the year's garden season
Thursday, September 6, 2018
Saturday, August 25, 2018
Every night it sounded like there was a slow, gentle rain falling on our tent. But there was no rain, there were barely any clouds in the sky. I think the sound was that of frass (caterpillar droppings) falling from many unseen caterpillars in the Hackberry tree by our tent.
White-marked Tussock Moth - Orgyia leucostigma
Pale Beauty - Campaea perlata
Grapevine Skeletonizer - Harrisina americana
Banded Tussock Moth - Halysidota tessellaris
"Caterpillars of Eastern North America" by David L. Wagner
Posted by 11 at 4:58 PM