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"Hobo" Spider-Tegenaria agrestis, ventral - Eratigena agrestis - Female
Salt Lake City, Salt Lake County, Utah, USA
September 19, 2004
Size: 25mm
An older individual found in the basement, fortunately/unfortunately, others have not been found (too many Hololena?). Thanks to Paula E. Cushing in getting to the final ID. Note the pattern on the sternum, the epigynum morphology helps in identification as well.

Images of this individual: tag all

Hobos don't have fuzzy bellies
I don't think this is a hobo, because they're not normally fuzzy on the underside of their belly. (I know there's a scientific term for that part of their body).

might be interpreted differently. The type of lighting can make the "hairs" more or less obvious. The other characteristics point to Hobo. Your observation is appreciated, never hurts to re-evaluate past assumptions. More specimens should show up this year to get their undersides portrayed, still trying to get a shot of one biting an artificial finger.

are most certainly present on the sternum of a hobo spider. Arachnologists sometimes scrape hairs off in order to make certain characteristics easier to discern, so some photos you may see online or in texts are different from what you will see on an unaltered specimen. And often the nature of the lighting makes the hairs difficult to see (as you observed).

I would not care to rely on coloration since it is too variable in a given species (a fact the WSU guide may not have put forth), but the epigynum is just clear enough to make an ID possible: a female hobo spider is the only species in the genus that has that distinctively quasi-triangular atrium. For a while during the hobo spider craze, I was looking at specimens daily, so I have seen these from every angle imaginable. It got old real fast.

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