Yanmamon

Yanmamon is an Insectoid Digimon resembling a dragonfly. The "Yanma" in its name is the Japanese word for large dragonfly. It carries electric power and swarms around digital world.

Digimon Adventure: Anode/Cathode Tamer
Yanmamon are recruitable enemies in Piemon's Castle.

Digimon Adventure 02: Tag Tamers
In lines 11 and 17, Yanmamon digivolves from Tentomon without a digi-egg.

Digimon Data Squad
Yanmamon carries Gotsumon around the Digital World. It first appears carrying Gotsumon as he watched the battle between the members of DATS between Keenan Crier and his partner Falcomon. It makes numerous appearances later on, including during Gotsumon's attack on the Real World, and when he makes his final stand as Meteormon. It is unknown what happened to this Yanmamon after Meteormon's death.

Digimon World Data Squad
http://digimon.wikia.com/wiki/User:Maitkarro/DW_Data_Squad#Yanmamon

Digimon World
Its a wild digimon in Tropical Jungle and Geko Swamp.

Digimon World 3
Yanmamon can be found in a yellow colour in Asuka's East Sector, in Wind Prarie. A green coloured variation of Yanmamon can be found in Asuka's South Sector, in the Bulk Swap area. Its also available as a White Champion Card with 6/8.

Digimon World Dawn/Dusk
Yanmamon digivolves from Kunemon. It can be found in Loop Swamp.

Attacks Variations / Subspecies
 * Thunder Ray
 * Bug Swarm (Insects Ohm)
 * Somersault Attack (Somersault Kill)
 * SandYanmamon