|
EXPLORE > ANIMALS > INVERTEBRATES
Various species
There are hundreds of species of yellow sac spiders distributed all over the United States, all of which are yellow or yellowish-green in color. The two major species in Oregon are the Cheiracanthium inclusum, a native, and Cheiracanthium mildei, which was introduced from Europe.
Spider activity may be easier to spot outdoors where they will spin a web. When indoors, the yellow sac spiders are more likely to create small silky sacs which are used to ensnare prey.
The severity of the spider's bite is contested, with some scientists comparing it to that of the hobo spider, and others insisting it is no more dangerous than the sting of a wasp. Still, this is a potentially dangerous species and bites may present a serious risk to the very young, the elderly or people with weakened immune systems. Immediate medical care should be sought if bitten.
Range and Habitat
The spider's preferred habitat is grassy, vegetated areas and it may be commonly found in yards, parks and similar natural spaces inside urban areas. Like the black widow and hobo spiders, yellow sac spiders may also be found hiding in garages, basements, woodpiles and storage areas. They are more likely to enter homes during colder weather. In Oregon, they are most commonly found in the Willamette Valley.
Conservation Status
Common.
Various species
There are hundreds of species of yellow sac spiders distributed all over the United States, all of which are yellow or yellowish-green in color. The two major species in Oregon are the Cheiracanthium inclusum, a native, and Cheiracanthium mildei, which was introduced from Europe.
Spider activity may be easier to spot outdoors where they will spin a web. When indoors, the yellow sac spiders are more likely to create small silky sacs which are used to ensnare prey.
The severity of the spider's bite is contested, with some scientists comparing it to that of the hobo spider, and others insisting it is no more dangerous than the sting of a wasp. Still, this is a potentially dangerous species and bites may present a serious risk to the very young, the elderly or people with weakened immune systems. Immediate medical care should be sought if bitten.
Range and Habitat
The spider's preferred habitat is grassy, vegetated areas and it may be commonly found in yards, parks and similar natural spaces inside urban areas. Like the black widow and hobo spiders, yellow sac spiders may also be found hiding in garages, basements, woodpiles and storage areas. They are more likely to enter homes during colder weather. In Oregon, they are most commonly found in the Willamette Valley.
Conservation Status
Common.
