I'd love to give you an answer on that, Christine, however both still have "cf" in the taxonomy.
“Cf” means “confer” or “looks like”. When used after “Genus,” it's implying “this shrimp looks like this “Genus”, but aside from that, it has not been “identified.”
Until more study is done on placing shrimp into the proper taxonomy, we're only working from educated guesses.