Never seen one of these before and I'm not going to lie...it spooked me out. I was using my 50mm with a few tubes in the backyard and spotted this Wheel Bug just before coming inside.
IMAGE LINK: https://flic.kr/p/pbLf2f IMG_0521 by cxcxsx, on Flickr
I think the bright orange here is the scent gland from what I was looking up.
IMAGE LINK: https://flic.kr/p/prdFQ9 IMG_0537 by cxcxsx, on Flickr
Apparently these are good to have in the garden as they eat other pests. I did read that they can yield a nasty bite so I'm glad I kept it off my hand for photos.
I have finally ordered a macro lens to try my luck without using stacked tubes. I went with a Tamron 90mm AF 2.8 Di SP A/M 1:1...phew long name. I read some nice things about it and it was affordable. I'm really hoping it will allow me to progress a bit in my macro stuff.