From Halopedia, the Halo wiki
The vespin is a deadly pseudo-arachnid that often lairs in the ancient Sangheili temple complexes on Sanghelios. The Vespin Warthog, an improved M12R Rocket Warthog with high-acceleration rockets and faster reload time, was named after this creature by the United Nations Space Command and the Swords of Sanghelios after conducting joint patrols against Covenant remnants and Created scouts.
List of appearances
- Halo 5: Guardians (First mentioned)