I recently wrote a stub on [[Heliophorus]], a genus of
butterflies. It
links the existing article on its subfamily with the existing articles
of the species. As the subfamily article only lists genera, my new
article is the only way to go from the subfamily article to the
individual species. It is therefore useful, even though it contains
nothing more than a partial list of species.
I created this list from wikipedia: it just contains all species that
have an article. If I had to list my source, it would have been
"Wikipedia", which is Not Acceptable, and would have been removed (I
guess). So I left it unsourced.
Your article is basically a list - using Wikipedia as the source for a
list is generally accepted. As long as the articles you link to have
sources, then the sources don't need to be stated on the list.