I think there should be implemented a tab similar to the resource one, but where you could see all the insects in the game. Here's how it should work:
Once you kill a creature for the first time it pops up in the corner with the message "Weevil Discovered" for example, similar to when you discover a resource for the first time.
Now you're able to look at the the weevil in the creature tab. The tab is fairly limited at first, only showing the creature and the potential loot it drops.
To figure out the creatures weakness you need to find burgl and accept his daily "kill this insect" missions, instead now it's a kill and scan insect mission. To scan a slain insect you walk up to said insect and hold the interaction button to scan and harvest the insect and thus is added to the mission quota.
If an insect is part of a scan and kill mission, you're not able to just harvest the insect, just to avoid missing potential mission progression.
