I think that the picture is a little bit too loosely framed, and that a tighter crop would have helped, but since this is minimal editing, you need a bit more zooming in (or a proper macro lens). The challenge is "insects", and tighter framing would have made the insect stand out more. On the upside though, the background is quite funky.
Like you said in your description, it definately is underexposed, and i'd say you lost a good amount of votes because of this. In the future, if your ever worried about exposure, shoot a few shots, above and under what you think is right.
The image is a little bit soft, and I'd say that using f/22 didn't help you with that. I'm guessing you used f/22 to maximise depth of field. However after about f/16, a lens loses a LOT of sharpness due to a think called diffraction. Try to use an aperture smaller than f/16 when possible, even for landscapes. use this website to work out what aperture you can use //www.dofmaster.com/dofjs.html
Theres definately an insect, so i guess i can't complain, but a bit more focus on it would have helped
I know i've given you a lot of negative comments, but I'm trying to give you some real feedback so you can learn, and improve for the next shot :) ... On the upside, I can see you were trying to use the rule of thirds, and that has DEFINATELY helped this picture. Look forward to seeing more of your work :)