Symbiotic firefly

A is a light source which can be equipped in the Floating Nearby slot and grants 400 reputation with the Insects faction (enough to offset the  reputation that the player starts with), but will be destroyed permanently if ever unequipped. Additionally, they are among the most expensive light sources, with a commerce value of.

Tips

 * While it's tempting to view symbiotic fireflies as light sources, they pale in comparison to and  in that regard and should be considered primarily for the reputation they grant. If you plan to use a firefly, unless you're satisfied with their relatively small vision radius, you should consider also equipping a glowsphere in a hand.
 * They have a very high commerce value, so if you decide that a firefly is not a good use of your floating nearby slot, selling them is also a good option.