There's a few worlds/species whose affiliation with the Federation is unclear. Without citing any non-canon materiel (I'm looking at you, relaunch novels), I'm curious what some people think of the following: Trill: Starfleet DOES include officers from species we know to be non-members (Klingons, Bajorans, Ferengi), but unless explicitly referred to as such, I tend to give the benefit of the doubt and assume membership. (Based on that criteria, I also assume Tiburon is a member). More importantly, though, Curzon was a Federation diplomat for decades. Now foreign-born state officals aren't unheard of (Henry Kissenger and Madeline Albright, for instance), but seems pretty unlikely. The only think that damn hard to explain is them being members as far back as the late 23rd Century, if not further, and it being such a shock in "The Host" that Trills are joined with symbionts. (Then again, considering DS9 basically ignored everything about that episode except for that basic premise, maybe we should too). Despite that mess, I lean towards yes. Risa: This one's a bit trickier. The whole storyline of "Let He Who is Without Sin..." seems to put Risa as a member, but it's hard to reconcile that with Picard seemingly being unfamiliar with the planet and Riker explaining it to him in "Captain's Holiday". I dunno. Could go either way. Benzar: Mordock was the first Benzite in Starfleet in "Coming of Age", but that doesn't necessarily mean anything. They could be a relatively new member or one whose members are typically interested in Starfleet. "A Matter of Honor" seems to indicate them not being members, based on Mendon serving as part of an exchange program and the Benzites said to be having their own ships (as opposed being "absorbed into Starfleet" like the Bajoran militia would've been). Based on that, I lean towards no. Zakdorn: Based on one serving as a Starfleet observer and another as quartermaster of a Starfleet surplus depot, I lean towards yes. (But then where were these "master strategists" when Starfleet was fighting the Borg and the Dominion?) Anyone care to weigh in on these or some other notable worlds or races?