I got impatient since I saw the new icons were out and went ahead and updated mine. I decided to finally add some exhibits, since I track reptiles and amphibians anyway, aside from snakes (and I was also just tired of not being able to flex the three-toed sloth sighting). Couldn't possibly tell you whether or not I've seen most of the arthropods or not. As always, I'm looking strictly at the species level. All of the "maybe" tiers indicate that I have more or less concrete plans to visit a facility that holds this species within the given timeframe (with Japan happening, presumably, once this year and one next, with the trip next year being the one that will knock out most of those). The Danube crested newt and Lesser Antillean iguana are particularly annoying to see here, because
yes, they're kept at a miniscule number of facilities in the US each, but I can all but guarantee you I will never go there.