Data from Wyoming was rather sparse because a collaborator could not be found during the course of the study although some information was provided after the study was being readied for publication. In Colorado, Paula Cushing of the Denver Museum is conducting a comprehensive statewide spider survey and was able to provide data from her state. In California, I sought spiders from a multitude of sources (county agricultural commissioner offices, museums, arachnologists, vector control personnel, pest management professionals, etc.). These included Robb Bennett (British Columbia), Art Antonelli (Washington), Lynn Royce (Oregon), Craig Baird (Idaho), Alan Roe (Utah) and Will Lanier (Montana). Several collaborators assembled to provide data from each of their states or province and should be given proper credit for their efforts. The results have been published in the Journal of Medical Entomology (Vetter et al.
Therefore, in order to get a better idea of where the hobo spider lives, a fairly comprehensive study was conducted regarding its distribution. Most of the published distribution reports are in the form of technical bulletins, are local in scope and are not easily available to a general audience. In order to create name stability, the American Arachnological Society has chosen "hobo spider" as the spider’s official common name and was similarly accepted by the Entomological Society of America.ĭespite the hoopla surrounding the hobo spider as an emerging medical agent of dermatologic damage, there is little life history information regarding it. It has been known by several lesser-used names including the "aggressive house spider" which is somewhat of a misnomer because the spiders are not overly aggressive. Like many non-native organisms, once freed from native environmental constraints that kept populations in check, hobo spiders put down roots and spread from the initial focal point into British Columbia and east and south in the United States. The hobo spider is a European immigrant that became established in the Puget Sound port area in the 1930s. (And despite the potential for education of the medical community, brown recluse bites are still being diagnosed in the Pacific Northwest in juxtaposition to a lack of recluse spiders.) The hobo spider has therefore joined the widow and recluse spiders to become a member of the triumvirate of poisonous spiders with which the general public is familiar. Prior to that, necrotic wounds were blamed on the brown recluse spider even though no populations of any recluse species could be verified there.
Brown recluse hobo spider skin#
In the late 1980s, the hobo spider, Tegenaria agrestis, acquired a reputation as a medically important spider in the Pacific Northwest, capable of causing rotting skin lesions similar to a brown recluse spider bite.
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