Titles Super Dragonfly
Nicknames Yanma
General Info
Species Neopteron
Habitats Jungle, Great Forest, Flooded Forest, Jurassic Frontier, Marshlands, Sunken Hollow
Size 1888.97 cm
1541.99 cm
Relatives None
Signature Move Energy absorption, Dragon element energy sphere
Elements Element Dragon Dragon
Ailments Status Bleeding Bleeding
Element Dragon Dragonblight
Weaknesses Element Fire Fire
Creator MonsterHunterFlacko

Yanmaguirus (ヤンマギラス, Yanmagirasu) is a Neopteron.


Yanmaguirus is a large, dragonfly-like Neopteron that sports a sleek, shiny, reflective purple exoskeleton with yellow spikes across its body. The ventral side of the creature is orange. Yanmaguirus has six legs, the foremost pair end in crab-like pincers. The abdomen is long and slender and consists of 10 segments, the last segment ending in a scorpion-like stinger. The eyes are a bright red and the toothed mandibles resemble a vertical reptilian mouth of sorts.


Yanmaguirus is a very fast and agile Neopteron. Even when stationary it can accelerate so fast that it seemingly vanishes into a blur, enabling it to surprise an enemy from an unexpected quarter. The wings possess sharp edges that can even cut through rock. The stinger is used to pierce into its victim's hide and drain energy from it. Yanmaguirus uses the energy it siphons from a victim to power its own attack, a ball of Dragon element energy.


Yanmaguirus is a vicious creature that dominates the area it resides in.


Yanmaguirus can be found in the Swamp, Sunken Hollow, Everwood, and Ancient Forest.



Neopterons whose stingers are used to drain energy from their victims. Their wings possess a sharp edge that can cut through rock. They use the energy they have absorbed to fuel their own attacks. It is said these Neopterons utilize the dragon element.


  • Order: Odonata
  • Suborder: Anisoptera
  • Family: Yanma

Yanmaguirus is a member of the Neopteron class, a group of insectoid monsters that includes Seltas, Seltas Queen, and Atoraru Ka.

Habitat Range

The known habitats of Yanmaguirus in the Old World are the Jungle, Great Forest, Jurassic Frontier, Marshlands, and the Sunken Hollow. In the New World they are known to inhabit the Flooded Forest.

Ecological Niche

Yanmaguirus is surprisingly high in the food for being a Neopteron. It makes easy prey of herbivores like Aptonoth, Mosswine, and Rhenoplos. Other monsters like Gendrome, Yian Kut-Ku, Kecha Wacha, or Great Jaggi may find themselves in risk of being eaten. Yanmaguirus has equally fierce competition such as Rathalos, Rathian, Tigrex, Raizekusu, Khezu, Najarala, Shogun Ceanataur, Deviljho, Rajang, Dinovaldo, Gore Magala, and Elder Dragons. However, equipped with bone-cutting wings, powerful grasping pincers, energy draining stinger, and Dragon element attacks, they are a force to be reckoned with.

Biological Adaptations

Yanmaguirus has many features that make it a well equipped predator. Its forelimbs end in powerful pincers used to grasp and lift up objects the same size as the monster itself. The wings are very powerful and allow it to fly at break neck speeds. Yanmaguirus, even when stationary, can accelerate so fast that they can reach top speeds almost instantly. The sharp edges of the wings can even cut through rock and the shells of prey. The main feature of Yanmaguirus is its long and slender abdomen that ends in a vicious stinger used to pierce into a victim's hide and drain energy from it. It uses the energy it siphons from targets to shoot its own energy weapon, a sphere of Dragon element.


Yanmaguirus is a vicious creature who exists to dominate the area it resides in. They stop at nothing to try and kill potential targets and steal their energy.

Introduction Scene

A Hunter is making his way through the Swamp. His quest is to hunt a monster known as Yanmaguirus. The name is a new one to him. Passing by the cave, he peers in, hearing a strange growling sound. A few seconds later, a white mass lunges at the hunter, who rolls out of the way. He turns around to inspect his assailant, and realizes it's just a Khezu. Not wanting to deal with the bothersome monster, he continues his search until he remembers he needs Pale Extracts. Kill the Khezu, and then keep searching, he thought. Drawing his switch axe, he confronted the white Wyvern who was preparing another body slam attack. Just as the Khezu jumped, a flash of purple suddenly snatches the Khezu out of the air. The hunter looks at the creature, who had the cave dwelling Wyvern pinned against the ground, trapped in giant pincers, and a stinger pierced into its flabby skin. The Wyvern struggles to free itself but expires. The creature pulls itself from the now dead Wyvern and slowly turns around to face the hunter. His target had found him. Yanmaguirus raises its claws in the air and lets out a blood curdling shriek. The hunt begins.


  • Yanmaguirus is based off the kaiju Megaguirus from the Toho film Godzilla vs. Megaguirus. "Yanma" is derived from 蜻蜓 yanma (large dragonfly) while "-guirus" is taken from Megaguirus.
  • When knocked on the ground, Yanmaguirus will stay completely still for some time leaving the hunter some time to attack. It will also be unable to fly for a little while.
  • Yanmaguirus's head, front legs, wings, and stinger can be broken.
  • Yanmaguirus needs to attack the Hunter 5 times with its stinger to use its Dragon attacks. It can use its Dragon element attacks up to three times. Afterwards it will need to sting the Hunter again.
    • If the stinger is broken, Yanmaguirus will have to sting a Hunter 8 times instead.
  • When low on stamina, Yanmaguirus's eyes turn blue and drools.
    • It will feed on a carcass to regain stamina.
  • Yanmaguirus's roar requires HG Earplugs to block.
  • It can be infected by the Frenzy Virus.

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