Glow Fly

Glow Flies appear in Metroid II: Return of Samus. When dormant, they stick upon the wall with their abdomen flashing. When Samus comes close, they will curl and launch themselves at her. If they miss, they will re-attach to the opposite wall.

These insects appear to resemble the Plazmite of Tallon IV and the Fire Flea of Zebes. Whether or not there is a connection between them or this is simply a case of three seperate species convergently evolving similarly from similar habitats from is unknown.

Manual
"When dormant, they stick upon the wall with their abdomen flashing. When Samus comes close, they will roll up and crash into her."

Glow Fly