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Philippine Flat Stag Beetle

Philippine Flat Stag Beetle

The Philippine Flat Stag Beetle, often called "King Teiou" by enthusiasts, is a large flat stag beetle native to the Philippines. It's prized for its well-balanced, sturdy mandibles—with the inner tooth set slightly above center—paired with a thick, robust body. Among the large flat stag beetles, this species stands out for its notably feisty temperament. Despite that spirited nature, it's a tough, resilient beetle that tolerates occasional lapses in feeding, making it a good choice even for first-time keepers. Adults typically live 2 to 4 years, offering plenty of time to enjoy keeping one.

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About Philippine Flat Stag Beetle

A large Philippine stag beetle nicknamed "King Teiou," known for its shapely mandibles and sturdy build. Hardy and beginner-friendly, living about 2-4 years as an adult.

7 things to know before welcoming a Philippine Flat Stag Beetle

  1. 1Watch the Temperament

    This species is notably feisty even among large flat stag beetles, and two beetles kept together are likely to fight fiercely. Keep each beetle in its own enclosure and only pair them briefly, under supervision, for breeding.

  2. 2Distinctive Mandibles

    The species' hallmark is its well-shaped mandibles, with the inner tooth set slightly above center. The exact curve and tooth angle vary between individuals, so it's worth comparing a few before choosing one.

  3. 3Big Size Difference

    Males range from 60 to 110mm while females stay around 30 to 40mm, giving the sexes a noticeably different build. Larger males also tend to have more impressive mandibles.

  4. 4Hardy and Easy to Keep

    This beetle is sturdy and fairly tolerant of missed feedings, making it manageable even for beginners. That said, prolonged lack of food will still wear it down, so keep its insect jelly supply topped up regularly.

  5. 5Temperature Care

    Avoid hot, humid conditions and keep the enclosure somewhere cool and well-ventilated to keep the beetle in good condition. Shield it from direct sunlight in summer and avoid sudden temperature swings.

  6. 6Careful Handling

    With its feisty temperament and powerful mandibles, careless handling can result in a painful pinch. Hold the body firmly when picking it up and keep your fingers away from the jaws.

  7. 7Before You Bring One Home

    Since adults are kept individually, prepare a separate enclosure, insect substrate, and insect jelly for each beetle. Adults typically live 2 to 4 years, so make sure you're ready for that long-term commitment before bringing one home.

Frequently asked questions about Philippine Flat Stag Beetle

Q.Can beginners keep this species?
A.Yes, it's considered beginner-friendly because it's hardy and reasonably tolerant of missed feedings. As long as you keep up with basic care, it's an easy species to enjoy for a long time.
Q.Can males and females share the same enclosure?
A.Because this species has a feisty temperament, they're normally kept separately rather than housed together. The main exception is pairing for breeding, which should be supervised closely.
Q.How large does this beetle get?
A.Males typically reach 60 to 110mm, while females reach around 30 to 40mm. Size varies between individuals, and larger males tend to have more impressive mandibles.
Q.How long does it live?
A.Adults typically live around 2 to 4 years. The exact lifespan can vary somewhat depending on how it's kept.
Q.What should I feed it?
A.Store-bought insect jelly is the standard food for this species. It tolerates missed feedings fairly well, but regular jelly changes help keep it in good condition.

Useful tools for Philippine Flat Stag Beetle care

Learn more about Philippine Flat Stag Beetle in the encyclopedia

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Care difficulty, lifespan, size and diet — all basics covered.

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