Moved from Sac Spiders.

Hi Max, I was just wandering through a lot of the spiders that hadn't been placed to genus yet and I came across this specimen of yours. It just so happens that I have spent the greater part of this week researching the Elaver genus. I am, hmm...96% sure yours is an Elaver (like you thought). Clubionidae only has two genera (at least that I am aware of)...those are Clubiona and Elaver.

Clubiona doesn't have a patterned abdomen (its concolorous and lacking chevrons or spots). Its femur I has only one distal prolateral spine (your specimen has more).

Elaver has a distinct abdomen with chevrons and spots (like yours). And their femur I has two distal prolateral spines (which your specimen also has). And Elaver are restricted to the eastern US and extreme SE Canada to MT & AZ. There are currently 8 species of Elaver:

Elaver achuca (Roddy, 1966)
Elaver chisosa (Roddy, 1966)
Elaver dorotheae (Gertsch, 1935)
Elaver excepta (L. Koch, 1866)
Elaver kohlsi (Gertsch & Jellison, 1939)
Elaver madera (Roddy, 1966)
Elaver mulaiki (Gertsch, 1935)
Elaver texana (Gertsch, 1933)

...and I'm not familiar with how to distinguish between them yet. But I do think it would be a safe bet to add your spider to the Elaver guide page, especially since there aren't many other specimens there for people to see.

This info I've included can be found here: (1)

I welcome anyone to comment...I hope they do! Feedback (+/-) is greatly needed and appreciated. :)