Combee

Combee is a Bug, Flying-type Pokémon from the Sinnoh region. Female Combee evolves into Vespiquen when fed 50 candies while male Combee does not evolve into any other Pokémon.

Trivia

 * Niantic set Combee female ratio to be 100% after few hours of its release. Male Combee was re-added two weeks later.
 * This was likely to help with acquiring Vespiquen, as it requires a female Combee
 * Male Combees cannot evolve as a result of Vespiquen, the only current evolution for Combee, being female-exclusive.
 * Male Combees cannot evolve as a result of Vespiquen, the only current evolution for Combee, being female-exclusive.