Ok - normally I would leave a poll up for a little bit longer as the top post, but I just couldn't wait to post this...

Yesterday, on my walk home from work, I found what I believe is an ant-mimic jumping spider Sarinda hentzi). I've been searching for one of these for years - I can't begin to count the number of actual ants that I've given a second glance to to try and find one. As you'll see, it is a wonder I even found this one.

Technical Data: Canon EOS 7D, Canon MP-E 65mm f/2.8 1-5x Macro, 1/250 sec at f/16. Canon Macro Twin Lite MT-24EX in ETTL mode. ISO 100. RAW processing and cropped (top left, bottom left) in Adobe Camera Raw.

As you can see from the image in the top right, this little girl (I think it is a female, but I'm not 100% certain) is only 2mm in size. Yes, that is a ruler showing the mm scale that it is climbing on. Adults can grow to between 5-7mm, so this is obviously a juvenile - you can also tell this by the semi-transparent nature of its legs (remember the other spiderlings?). All of these shots were taken at 5x magnification, and the two on the left were cropped even more.

I'm not sure why these little spiders do this mimicry to look like ants, but they do a very good job of it. As you can see in the image on the top left, it will often hold its front two legs up to its head much the way an ant's antenna look. I don't know if this helps them to catch more prey or to be more likely to be ignored by other insects and spiders (ants can usually put up a very good fight and rarely travel alone, so picking on an ant isn't always wise).

Regardless of why, I find this little spider incredibly fascinating, and I am so glad to have been able to finally see one first hand. However, I'm sure this means I will spend many more seconds of my life looking at ants a second time to count how many legs are there... :)

- Bill