Insect Condo

The Insect Condo is a treasure in Pikmin 2 and Pikmin 4, and a fruit in Pikmin 3. It is an. In all games, the notes for this fruit imply that it is contaminated with parasites.

Collecting the treasure in Pikmin 2
The Insect Condo is found inside a Fiery Bulblax in sublevel 5 of the Dream Den. The player should be sure to defeat the Red Bulborbs and Blowhogs nearby, because they may attack the Pikmin while they're carrying the treasure.

Collecting the fruit
In Pikmin 3, the Insect Condo is inside a Burrowing Snagret, which is in an arena just past an electric gate in Twilight River. After defeating the Burrowing Snagret, the paper bag to the northeast of the arena should be pushed, creating a quick route back to the ship. Along the route are two Desiccated Skitter Leaves, which will eat the carrying Pikmin if not defeated.

Engulfed Castle
There is an Insect Condo inside of a Startle Spore in the northeastern room of sublevel 4 of the Engulfed Castle. To collect this treasure, you must first defeat the Startle Spore, then throw 12 Pikmin at it.

Frozen Inferno
There is an Insect Condo behind a crystal wall in the northwestern corner of sublevel 2 of the Frozen Inferno, so Rock Pikmin are required to collect it. It is guarded by a Frosty Bulborb, which should be defeated before attempting to collect it. To collect this treasure, you must throw 12 Pikmin at it.

Trivia

 * The Insect Condos in Pikmin 2 and Pikmin 3 are based off of the variety of apple, while the Insect Condo in Pikmin 4 is based off of the  variety of apple.
 * A unused icon in Pikmin 2 files would have indicated that a blue apple treasure was going to appear, which was eventually replaced with a green apple treasure (which also has an unused model present) before being eventually finalized as the Meat Satchel.