Is it on-topic here to ask for the identification of any living organism? If not, on what site would this be accepted as a good question?
I'd be hesitant to disallow them entirely, since species identification is a rather central part of biology. That said, I do feel that, if we do allow them, we ought to write up some clear guidelines on what it takes to write a good, answerable species identification question, and to be proactive in closing questions that don't meet those guidelines. The last few species-identification question I've seen (e.g. this, this and this) have been simply awful (as in, all but impossible to answer based on the details given).
(Alas, as a biomathematician with very little field biology experience, I may not be the best person to write those guidelines. I'm willing to give it a try if no-one else steps up to the plate, though.)