Bloatfly (Fallout 4)

Bloatflies are creatures found in the Commonwealth in 2287.

Gameplay attributes
Bloatflies in the Commonwealth will crawl on surfaces and are much more aggressive than in previous games. They will often fly very close to the Survivor, which often results in them doing more damage. They are almost always found in groups, and can become an annoyance due to their evasive movements when aiming at them. They tend to stay near bodies of water and swamp land, often accompanied by Bloodbugs or Stingwings.

Glowing bloatfly
A glowing bloatfly's death explosion may damage and irradiate nearby crops. The player will be unable to assign settlers to, harvest, store or repair the damaged crop for a period of time. The crop will glow green until it is able to be repaired.

Appearances
Bloatflies appear in Fallout 4.

Bugs
Getting poisoned by a bloatfly's attack can occasionally cause the player character to permanently display the glowing poison effect on their character model. This can be fixed by simply saving, reloading a save from before the player got poisoned and then finally reloading the most recent save again.