HEXARTHRIUS PARRYI PARADOXUS
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Taxonomic study on the subspecies of Cyclommatus metallifer
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Hexarthrius parryi, the fighting giant stag beetle, is a species of large stag beetles. It belongs to the genus Hexarthrius of the tribe Lucanini. It is classified under the subfamily Lucaninae of the stag beetle family Lucanidae.
This species is present in the forests of Southeast Asia, Indonesia and India.
Hexarthrius parryi can reach a length of about 40-90 millimetres in males, of about 40-54 mm in females (length from the tip of the jaw to wing tip). Some individuals of the Sumatra subspecies (Hexarthrius parryi paradoxus) can reach a length of about 97 mm. Body is moderately elongate, not very shining, the basic color is black. Males have long jaws directed downward from the base, with bifurcated tips and a large yellow or bright orange patch occupying the posterior three-quarters of each elytron. The pronolum is short. The lateral angle of the prothorax is very sharp. The head is very broad, quite uneven and rugosely punctured. The mandibles are strongly curved, densely granular, with a sharp tooth directed upwards and another one directed downwards. The front tibia is finely serrated and the middle tibia has a strong lateral spine. The forewing shows a pair of brown spots.
Eggs are laid into rotten wood, sometimes into tunnels made by the females. Larvae feed on rotten wood. They become a pupa in the about 6-9 months. Adults emerge in about one month after pupation. Life of adults last about 6–8 months. They feed on sap and fruits.
Hexarthrius stag beetles are found in south-east Asia. The males grow to very large sizes. They are extremely aggressive and violent. Any beetle found in close proximity of it will be fiercely removed with its large mandibles. They should be handled with great care. Many of the Hexarthrius stag beetles have mandibles that split into two directions at the end of each side.
This beetle has a dull, dark, brick reddish body. Both the legs and antennae are blackish. The most notable characteristic are the large, antler-like mandibles. These have small teeth running down the inside edge, with one large, forward-pointing pair located approximately a third of the way down from the tips. The tips are forked inward somewhat.
During the larval stage, Hexarthrius mandibularis lives in rotten hardwood, feeding on it. Later, during the imago stage, it consumes tree juice.