Use Literary Terms in Thesis Only to Make Larger Points
Poems and novels generally use rhyme, meter, imagery, simile, metaphor, stanzas, characters, themes, settings and so on. While these terms are important for you to use in your analysis and your arguments, that they exist in the work you are writing about should not be the main point of your thesis. Unless the poet or novelist uses these elements in some unexpected way to shape the work's meaning, it's generally a good idea not to draw attention to the use of literary devices in thesis statements because an intelligent reader expects a poem or novel to use literary of these elements. Therefore, a thesis that only says a work uses literary devices isn't a good thesis because all it is doing is stating the obvious, leading the reader to say, "so what?"
However, you can use literary terms in a thesis if the purpose is to explain how the terms contribute to the work's meaning or understanding. Here's an example of thesis statement that does call attention to literary devices because they are central to the paper's argument. Literary terms are placed in italics.
Don Marquis introduced Archy and Mehitabel in his Sun Dial column by combining the conventions of free verse poetry with newspaper prose so intimately that in "the coming of Archy," the entire column represents a complete poem and not a free verse poem preceded by a prose introduction.
Note the difference between this thesis and the first bland thesis on the Parker poem. This thesis does more than say certain literary devices exist in the poem; it argues that they exist in a specific relationship to one another and makes a fairly startling claim, one that many would disagree with and one that the writer will need to persuade her readers on.