Seltas

 Aruserutasu is a male Neopteron introduced in Monster Hunter 4. He is known to inhabit temperate areas. It is unknown at which ranks he can be encountered.

Physiology
Aruserutasu is a large, beetle like insectoid with a brightly-coloured, highly resistant exoskeleton, which is covered in spines and knobs. He has six legs, the foremost pair are armoured and weaponized for combat, and a pair of collapsible wings. His head is hidden beneath a large, armoured canopy that extends far beyond the rest of his upper body. He has a pair of compound eyes and powerful slicing mandibles. Aruserutasu is the male counterpart to the Generu Serutasu.

Abilities
Aruserutasu is capable of highly precise movement in air, thanks to his highly-developed wings. His forelimbs are designed for jabbing and slashing, and his compound eyes provide him with an extremely wide field of vision.

Behaviour
Aruserutasu is predatory in nature, both large and powerful enough to prey on both hunters and small monsters alike. He is known to attack from the skies and use is weaponized forelimbs to attack. In addition, he is commonly known to attatch himself to his massive female partner and transport her with his powerful wings.

When he is forced to merged with Generu Serutasu, at first, he will struggle in desperation to escape. But when the merge has been complete, it will fight alongside Generu Serutasu without question, vigorous even, as if hypnotized.

Habitat
Aruserutasu can be found in the Ruins Field, where prey is plentiful and the temperature is neutral.

Trivia

 * Apparently, in one of the Monster Hunter 4 trailers, Aruserutasu's English name is "Alceltas".
 * Also, in the same trailer, Aruserutasu is seen caught by Generu Serutasu. He struggle was futile, as he was forced to merged with her, he fights like as if he has been hypnotized.