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Hexarthrius mandibularis

Hexarthrius mandibularis

A species of Hexarthrius

Hexarthrius mandibularis is the world's largest fork-horned stag beetle. It belongs to the tribe Lucanini, in the family Lucanidae. 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.

General Info About Hexarthrius mandibularis
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Attributes of Hexarthrius mandibularis
Colors
Brown
Black
Habitat
rotten hardwood; rainforest; field
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing mouthparts
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Distribution Area of Hexarthrius mandibularis
Sumatra, Indonesia
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Life Cycle of Hexarthrius mandibularis
Egg The egg stage for hexarthrius mandibularis involves a small, often oval-shaped egg which the female deposits in a secure location. The eggs are usually laid in clusters and are immobile, with development occurring inside the shell.
Larva In the larval stage, hexarthrius mandibularis exhibits rapid growth and molting, with a worm-like body that lacks wings. Feeding voraciously, the larva increases in size, often changing its skin multiple times to accommodate its growth.
Pupal During the pupal stage, hexarthrius mandibularis remains dormant, enclosed in a pupa while undergoing a remarkable transformation. The body reorganizes internally and externally, developing wings and adult structures, though motionless and non-feeding.
Adult Emerging from the pupa, the adult hexarthrius mandibularis exhibits a hardened exoskeleton with distinctive coloration. Fully formed wings allow for flight. The size is now constant, and the creature focuses on mating and laying eggs.
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Interesting Facts About Hexarthrius mandibularis
Hexarthrius mandibularis males engage in dramatic battles with their enlarged mandibles, which are used like antlers in deer to challenge rivals and attract mates.
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Scientific Classification of Hexarthrius mandibularis
Tips for Finding Hexarthrius mandibularis
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Youth Habitat of Hexarthrius mandibularis
Forests and Woodlands, Rotting and Decaying Matter
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Adult Habitat of Hexarthrius mandibularis
Forests and Woodlands
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When is the Best Time to Observe Hexarthrius mandibularis
Adult hexarthrius mandibularis are most active during the evening and night times, which makes this period most suitable for observation and capture.
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What is the Best Weather to Observe Hexarthrius mandibularis
Warm and humid conditions are preferable as hexarthrius mandibularis thrive in such environments, commonly in tropical or subtropical regions.
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How and Where Can You Find Hexarthrius mandibularis at Different Life Stages
Larva Hexarthrius mandibularis larvae reside in decaying wood, so searching in and around rotting tree stumps or logs is the best method to locate them. Use gloves and gently excavate the wood to find them.
Pupal Hexarthrius mandibularis pupae are usually entrenched within the wooden material where larvae develop. Spotting them requires careful examination of wood that the larvae have been feeding on.
Adult Adult hexarthrius mandibularis are attracted to lights and fermented fruits. Setting up light traps at night or baiting with fruit can lure them into a reachable area for safe capture.
Are Hexarthrius mandibularis harmful?
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