Cheiracanthium mildei
(Long-legged Sac Spider)

Picture ID 12751

Picture of Cheiracanthium mildei (Long-legged Sac Spider) - Dorsal

Comments & ID Thoughts

Location: Pretty commonly found in house. Michigan, Metro Detroit.
Size: Around 1 Quarter.
Color: Dark Yellowish
I’m thinking it’s species of yellow sac spider, but am not certain, can someone please confirm specific species? Are they aggressive (bite in site) or docile? How much is the pain from a bite? How venomous are they?

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BugmanDan

Hi. This does look like a long legged sac spider, if so, these are not aggressive but prone to bite if trapped against skin and can’t run. They are venomous like ants and bees but not considered medically significant. People report some pain like a mild bee sting, over that, I can’t predict how you may react to something like this. I catch them by hand and found them very skittish and try to avoid you. Had them in my last place and much ignored them unless they dangle in front of your face watching a movie. A touch and… Read more »

Additional Pictures

Picture of Cheiracanthium mildei (Long-legged Sac Spider) - Dorsal Enlarge Picture
Picture of Cheiracanthium mildei (Long-legged Sac Spider) - Dorsal Enlarge Picture
Picture of Cheiracanthium mildei (Long-legged Sac Spider) - Eyes Enlarge Picture
Picture of Cheiracanthium mildei (Long-legged Sac Spider) Enlarge Picture