Gokicha!!

The hard life of living as a cockroach. 

Short adventures of a small cockroach. 

Both short shows about tiny insect sized girls. But Gokicha!! is about cockroaches that are actually cute girls who want to become friends with humans. Both are bug themed funny shorts. 

Short anime about cockroaches that are actually cute anime girls. 

Both in both anime, there are cute girls with insect features. In Gokicha!! Cockroach Girl there is a cockroach girl and in Wasurenagumo there is a spider girl. Both are comedies and both are short anime. 

Both anime feature anime girl animals and the perils of their existence. Shake-chan is about a fish girl who wants to be eaten, whereas Gokicha is about a cockroach girl trying to survive. They're both very short anime with a lot of the same style of humor and formatting. If you liked one, check out the other. 

Both are shorts about the daily life of an insect. 

Short anime about anthropomorphic cockroach girls.