Yanmamon

Yanmamon is an Insectoid Digimon resembling a dragonfly. The "Yanma" in its name is the Japanese word for (large) dragonfly.

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

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

Digimon World 3
A common enemy in Wind Prarie in yellow color and a green version in Bulk Swamp.

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

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