Shadow Insect

Shadow Insects, also known as Twilit Insects, are enemies in the Zelda series that mainly appear in The Legend of Zelda: Twilight Princess. The Shadow Insects are creatures created by Zant's dark magic that were tasked with stealing the Light Spirits' light and keeping it within themselves as Tears of Light.

Behavior
They are the direct cause of the provinces of Hyrule being engulfed into the Twilight Realm. As a result, Link must hunt them down if he hopes to save Hyrule from the influence of the Usurper King. Only three Light Spirits were the target of the Shadow Insects namely Faron, Eldin and Lanayru as Ordona was protected by Link when the armies of Zant came after him. As a result only the provinces protected by the three Light Spirits who fell, Faron, Eldin and Lanayru have Shadow Insects inside of their borders. The Insects are 16 in numbers by province (12 in The Legend of Zelda: Twilight Princess HD) and Link must kill them all to retrieve every Tears of Lights. The Shadow Insects usually are hidden from Link's usual reach and are all invisible until Link uses his senses as Wolf Link. Aside from that some only appear when talking to certain characters or even hide themselves underground forcing Wolf Link to dig them up in order to even be able to attack them. They periodically generate a field of electricity around their body, which will damage Link if he touches them. Some will even try to fly to makes themselves even harder to reach. They hold every single Tears of Light with the exception of the last one, which is guarded by the Twilit Bloat.