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  • Running Spider - (Trachelas sp.)

    Running Spider - (Trachelas sp.)

    Running Spiders almost never rest. They are always on the hunt and use their silk to build a small shelter for the occasional break and mealtime.

    Staff Writer (1/30/2014): Running spiders, or sac spiders, do not form webs. Instead they hunt their prey with lightning-quick speed. They are fast and stealthy, ambushing insects that are either unaware of their presence or unable to flee.

    The dark reddish head and thorax are in contrast from the tan abdomen. Hind legs are the lightest of the eight, appearing almost white. Their pedipalps are feelers in the front of the face and are large enough to be mistaken for a 5th pair of legs, albeit shorter ones.

    All spiders (except Cribellate Orbweavers) have venom used to immobilize or kill their prey. This particular genus of spider is said to have a pretty painful bite to humans, though their venom is not dangerous like a Black Widow or Brown Recluse's. That said, a few reports of an infection arising at the bite site (possibly from scratching or touching it) have been made as well as a lengthy healing time. As every body is different, see a medical professional if you think a spider bite is getting worse or more painful.

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    Details of the:
    Running Spider

    Category: Spider
    Common name: Running Spider
    Scientific Name: Trachelas sp.

      Kingdom: Animalia
       Phylum: Arthropoda
        Class: Arachnida
         Order: Araneae
          Family: Corrinidae
           Genus: Trachelas
            Species: sp.

    Size (Adult, Length): 3mm to 10mm (0.12in to 0.39in)

    Identifying Colors: red; brown; white; tan

    Additional Descriptors: biting, venomous, fast

    North American Reach (Though Not Limited To*): Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Hawaii; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming; Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Nova Scotia; Ontario; Prince Edward Island; Quebec; Saskatchewan; Mexico

    * Keep in mind that an insect's reach is not limited by lines on a map and therefore may appear in areas/regions/states beyond those listed above.