I found this spider crawling on my tile floor. We live in rural central Virginia. I’ve found spider species with similar looks but nothing exactly like this. Its size was less than 1 inch. Can anyone identify it?enter image description here

  • $\begingroup$ Some sort of jumping spider (Family: Salticidae) $\endgroup$ – JulPal Aug 16 '18 at 11:55
  • $\begingroup$ Could be Thiodina sylvana... But I'm not sure. Thiodina occurs in Virginia. Take a look at this picture: flickr.com/photos/52450054@N04/6304831786 but be careful, it shows a male. Females tend to be more brownish $\endgroup$ – JulPal Aug 16 '18 at 12:13

I agree with JulPal's comment from August. It looks very much like a male Thiodina (now renamed Colonus) sylvanus. As with many Salticids, the females look rather different, and it turns out that there is apparently a similar species of Colonus in the area, which can be distinguished in the field by the fact that the white mark on the carapace is not a block so much as a thick longitudinal line. I attach an image from Tree of Life, with the link below:

enter image description here



It is Tarantula which comprise a group of large and often hairy arachnids belonging to the Theraphosidae family of spiders

  • 1
    $\begingroup$ It would be good to explain how you know it is a tarantula. Maybe based on on the position of the chelicerae? I am surprised that there are tarantula as far North as Virginia. $\endgroup$ – Remi.b Aug 15 '18 at 14:34
  • $\begingroup$ It doesn’t look at all like a Tarantula to me. It’s size was less than 1 inch. $\endgroup$ – Penni Aug 15 '18 at 17:26
  • $\begingroup$ @Penni You should be mentioning that in the question. From this zoom, I would have guessed that it was much bigger. $\endgroup$ – The Last Word Aug 15 '18 at 18:24
  • $\begingroup$ Yes, I should have.. my bad. This is my first post, ever, so I’m a newbie. Thanks for your help, @TheLastWord. 😁 $\endgroup$ – Penni Aug 15 '18 at 18:39
  • $\begingroup$ It is not a Mygalomorph - the eyes are in the front of the head, with two large ones right on the forward 'face', like a Jumping Spider, rather than clustered in a turret atop the round, flat carapace; the abdomen is long and teardrop-shaped, like a Jumping Spider, rather than large and bulky, with two obvious 'exhaust-pipe' spinnerets at the back; and the legs are short and stocky, like a Jumping Spider, rather than long and thick and very hairy. $\endgroup$ – John Robinson Nov 13 '18 at 15:06

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.