I split off the posts above to their own topic.
The answer is that yes, identification tips can be added to Wikipedia. Like all content there, the information must come from a reliable source.
The content also needs to be phrased a certain way. Wikipedia isn’t a “how-to” guide, so content shouldn’t be written like “this is how you identify this moth, look for the dark brown speckles on the whatsit”. But you can absolutely share information phrased like “it has dark brown speckles on its whatsit (citation here)”.
More info about ways to improve taxon pages on Wikipedia here: https://forum.inaturalist.org/t/ways-to-help-improve-inaturalist-taxon-pages-through-wikipedia/2680
And discussions about the proposal to put identification guide type content content on iNaturalist itself can occur here: https://forum.inaturalist.org/t/expand-the-similar-species-tab-into-an-editable-identification-guide/13890