Blathers has gone on safari, and needs your help cataloging new species!

If ACNH asks you for ideas for a Critterpedia expansion, what catchable creature would you like to see in the game? My friends and I talked about this, and thought it was a fun idea to play with. Share a creature, it's season (and time if applicable), and season.

[Minor Spoiler Warning: For those who don't want to find out what you CANNOT catch in the game]

I'll share my ideas after a post so that anyone who wants to avoid "reverse-spoilers" can avert their eyes

I've always thought a great (awful) addition would be the periodical cicada. EXTREMELY common when they're around, but you can only get them for one month every 17 years

Chiyoko: That's amazing, but I don't know how much of it i'd be able to take after awhile haha. Imagine those occurring with mole crickets  

Frilled Shark:
An ancient shark that looks like a crossbred between a dragon, eel, and...shark! With coelacanths being a staple in AC, I think it would be fun to have another "living fossil" that we can catch.

Termites:
These wood eating buggers would have a chance of spawning a mound next to a tree stump. One swipe at the mound and you'll get em.