This article or section contains information about StarCraft: Ghost, which has been declared non-canon. Elements may be taken as 'flavor lore' however.
Firefly mines were to be one of the options available to Nova Terra in StarCraft: Ghost. They would allow her to distract enemies and move them into opportune positions. According to data from the leaked build, the firefly mine would have used the same model as the spider mine, with a red color scheme.