This game was pretty fun to play!
One suggestion I have might be to match some of the sprites a bit more, mainly I'd say the character, as the character is just one solid color with a black/really dark outline, while the objects and such in the world have shading and don't have a black outline.
I'd also add a diagonal animation for the ant as it looks a bit awkward, but I'm guessing you've already heard that.
Last suggestion would be to add a slider or something for the call menu, as manually typing in the value every time and making sure it works gets pretty tedious.
By the way I was able to abuse that negative working ant glitch and got like -5000ish, and was able to get to the species level 15 pretty fast lol, so that was interesting.
Anyways the game was really fun to play, good job!