Yellow Spectralid

The Yellow Spectralid is a member of the Flitterbie Family in Pikmin 3. They are similar to the yellow Unmarked Spectralids in appearance but like the name of the Unmarked Spectralids suggest, the regular Yellow Spectralid have black marks on their wings.

Behavior
In Pikmin 3, they are verry common and can be found in every area of the game. They are harmless and can easily be killed by a single well placed Pikmin throw. They also produce a drop of Nectar when killed, which is useful to turn a large group of Pikmin into flowered Pikmin really fast.

Pikmin 3 Prima Guide
"Like the White Spectralids, the Yellow Spectralids is a harmless flying creature. However, when you defeat a Yellow Spectralids, it drops a bit of Nectar. If you choose to attack a Yellow Spectralids, use your Winged Pikmin to ensure a short battle."