Cheiracanthium mildei
(Long-legged Sac Spider)

Picture ID 4750

Comments & ID Thoughts

No clue. Was told it was brownish-black when found.

Submitted by:
connor47
Submitted: Jan 30, 2018
Photographed: Jan 29, 2018
Spider: Cheiracanthium mildei (Long-legged Sac Spider)
Location: 04005, Maine, United States
Spotted Indoors: Other
Found in web?: No
Attributes: Lateral

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ItsyBitsy

Moderator

January 30, 2018 2:00 pm

Hi, welcome to Spider ID. 🙂 This is a Longlegged Sac Spider (Cheiracanthium mildei).

Connor47

Photo Owner

January 31, 2018 10:46 am

If I put a yellow sac spider in with a Longlegged sac spiders habitat, what would happen?

ItsyBitsy

Moderator

Reply to Connor47

January 31, 2018 2:27 pm

Generally speaking that is two different common names for the same species. Though the names may also be used to describe other species in the family/genus at times. What happens would probably depend on the maturity and gender of the spiders. They might mate or if the enclosure wasn’t big enough for the both of them, one might eat the other.

Connor47

Photo Owner

February 1, 2018 10:48 am

How big should the enclosure be if I didn’t want them to kill each other? And how do I tell if they’re a boy or girl?

ItsyBitsy

Moderator

Reply to Connor47

February 1, 2018 11:02 am

I would just go with separate enclosures if you don’t want to risk them eating one another. If they’re immature you can’t determine gender. A mature female will have a visible epigynum on the ventral side and slender pedipalps, a penultimate or mature male will respectively have swollen or sclerotized pedipalps.

Female: https://bugguide.net/node/view/650719/bgimage
Immature male: https://bugguide.net/node/view/898690/bgimage
Mature male: https://bugguide.net/node/view/906999/bgimage