You can see the full category hierarchy on the Category Map.
| 
 | 
 | 
| 1 beginning with A | ANT | 
| 2 beginning with B | BEES BUG | 
| 1 beginning with C | COCKROACH | 
| 3 beginning with E | EARWIGS ESCARGOT ESCARGOT (2) | 
| 2 beginning with F | FLEA FLIES | 
| 3 beginning with G | GNAT GRASSHOPPERS GRUB | 
| 1 beginning with K | KATYDID | 
| 1 beginning with L | LOUSE | 
| 2 beginning with P | PICNIC (2) PREYING MANTIS | 
| 2 beginning with S | SLUG SNAIL | 
| 1 beginning with T | TICKS | 
| 1 beginning with W | WORM | 
| 20 apronyms in total | |