100 Species #57: Striped harvestman
Jun. 9th, 2011 07:29 pm
This striped harvestman (or "daddy long-legs," Leiobunum vittatum) was on the front wall of the house, missing two of its legs.
I dislike the word "harvestman," but I fear I must use it in place of "daddy long-legs," the name I called this animal as a child, to avoid confusing it with the crane fly or the cellar spider, which also go by that name. The harvestman is a creature of mystery to laypeople. As recently as last week I had to dispel the bunkum that the daddy long-legs is the most venomous spider. First, it's not a spider at all, it's more of a gigantic mite with obscenely extended appendages. Second, it has no venom glands and no fangs. Harvestmen are predatory on smaller creatures, but also feed on detritus and carrion, being unusual among arachnids for tearing up and swallowing solid food particles. Spiders gooify the insides of their prey, sucking down liquid nourishment.
The striped harvestman is the most common and conspicuous one in North America, with a distinctive dark marking on a gray to pinkish orange body. The body darkens as the creature ages, and late season specimens' stripes disappear into the background color. Harvestmen can be handled quite safely--for the human--the harvestman usually ends up losing a few legs in the process.
This same species (represented by a nice reddish individual) was 365 urban species #329.