The Espinas Subspecies is a sub-species of Espinas. It is thus far exclusive to Monster Hunter Frontier. It has an orange-brown carapace with red claws, horns, brown wings and it is well known for its Rage Mode, when yellowish colours spread across its body. It has unique weapons and armor variants of the original. It appears to be more aggressive than its green counterpart, as it has the ability to charge its attacks for serious damage.
Its most dangerous attack is charging a fireball then releasing it in a huge purple blast. This is almost always instantly fatal. Certain individuals can make the fireball split into 4 smaller exploding balls on impact.
- Espinas Subspecies can be found in the Gorge as its natural habitat, but is also known to roost in the Tower and Tower 2.
- It is not until HR51+ when players can hunt the Espinas Subspecies.
- Hard-Core Espinas Subspecies was introduced in Monster Hunter Frontier's 10.0 update. Now when it is in Rage Mode, its marks will glow greenish-yellow. It also gained a new attack in which it shoots a giant poison fireball into the air followed by several poison fireballs raining down, similar to Crimson Fatalis' "Meteor Shower" attack.