Which is easier to keep, the short-jawed or long-jawed form?

There's no real difference in care between the two forms — both do fine with insect jelly and stable temperatures. Either is a fine choice, though long-jawed males tend to grow larger, so it's worth giving them a roomier enclosure.

Is this a good beetle for a first-time keeper?

This species is considered better suited to intermediate keepers, since it needs careful attention to temperature and humidity alongside basic care. It's a good fit for someone with some prior beetle-keeping experience or who's willing to learn the basics first.

How long can I expect to keep an adult beetle?

Adults typically live around one to two years. Individual lifespan varies with the beetle and its care, but this is a species you can enjoy for a good while.

Does it need anything besides insect jelly?

Insect jelly alone is enough for day-to-day feeding, with no need for live prey or fruit. The main task is simply swapping in fresh jelly regularly.

Is this an imported species — are there any regulations?

The Alcides Stag Beetle is not subject to CITES. There are no special regulatory procedures needed to keep or acquire one.

Alcides Stag Beetle

The Alcides Stag Beetle is a large stag beetle native to Sumatra, growing to an impressive 40-100mm as an adult. Males develop one of two distinct jaw forms — a stocky short-jawed type and a dramatically elongated long-jawed type — each with its own striking presence. Compared to many stag beetles, Alcides tends to be relatively calm and manageable, though its care requirements make it better suited to keepers with some prior experience. Adults typically live one to two years and thrive on a simple diet of insect jelly, making them a rewarding long-term companion. With its sturdy build and commanding silhouette, this species is a great next step for hobbyists ready to level up.

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Alcides Stag Beetle key facts

Care level: Intermediate
Lifespan: Adult 1-2 years
Size: 40-100mm
Temperature: 22〜26℃
Diet: Insect jelly
Housing: Keep in a large case with egg-laying logs and fermented substrate. Being broad and powerful, it also needs footholds to prevent tipping.
Temperature & Humidity: The ideal temperature is 22-26°C. Mist the substrate to keep it from drying out.
Diet & Feeding: Feed adults beetle jelly. Adults live a relatively long 1-2 years, so feeding continues over a long period.
Breeding & Egg-laying: Females lay in both logs and substrate. Larvae can be raised in fungus bottles or fermented substrate, and you can aim for both short- and long-jawed forms.
Health & Cautions: Its pinching force is very strong, so keep fingers away from the mandibles when handling.

TraitsAlcidesFlat stagSumatraShort/long tooth

About Alcides Stag Beetle

The Alcides Stag Beetle is a large Sumatran species reaching 40-100mm, known for its short- and long-jawed male forms. Adults live 1-2 years on an insect jelly diet, suited to intermediate keepers.

7 things to know before welcoming a Alcides Stag Beetle

1Two Distinct Jaw Forms
Male Alcides Stag Beetles develop into one of two forms — short-jawed or long-jawed — determined by conditions during the larval stage, not something that changes once they're adult. When choosing your beetle, it helps to know which jaw form you're getting so you can picture how it will look at full size.
2Temperature Matters
As a Sumatran species, this beetle doesn't tolerate cold well. Keep its enclosure out of direct sunlight and away from extreme temperature swings, and watch out for both winter chills and summer heat spikes.
3Size Up the Enclosure
Adults range widely from 40 to 100mm, so larger long-jawed males need a roomier enclosure. Adding climbing branches and loose substrate to burrow into helps them settle in, while cramped housing raises the risk of injury or stress.
4Insect Jelly Is the Staple Diet
Feeding is simple — commercial insect jelly is the main food source, with no live prey or special preparation needed. Jelly dries out and spoils quickly, so replace it regularly and clear away any leftovers to keep the enclosure clean.
5Handle the Jaws with Care
Long-jawed males in particular have powerful mandibles that can pinch if handled carelessly. Pick beetles up by gripping the thorax firmly and avoid sudden movements that might startle them, and keep males separated if you're housing more than one.
6Balance Humidity Carefully
Substrate that's too dry or too damp can both cause problems, so aim for a moderate, consistent moisture level. Excess humidity in particular invites mold and fungus gnats, so mist sparingly and make sure the enclosure has some airflow.
7A One-to-Two-Year Companion
Adults typically live one to two years, giving you plenty of time to enjoy their day-to-day care and behavior. Because this species is considered better suited to intermediate keepers, it helps to brush up on basic stag beetle care before bringing one home.

Frequently asked questions about Alcides Stag Beetle

Q.Which is easier to keep, the short-jawed or long-jawed form?: A.There's no real difference in care between the two forms — both do fine with insect jelly and stable temperatures. Either is a fine choice, though long-jawed males tend to grow larger, so it's worth giving them a roomier enclosure.
Q.Is this a good beetle for a first-time keeper?: A.This species is considered better suited to intermediate keepers, since it needs careful attention to temperature and humidity alongside basic care. It's a good fit for someone with some prior beetle-keeping experience or who's willing to learn the basics first.
Q.How long can I expect to keep an adult beetle?: A.Adults typically live around one to two years. Individual lifespan varies with the beetle and its care, but this is a species you can enjoy for a good while.
Q.Does it need anything besides insect jelly?: A.Insect jelly alone is enough for day-to-day feeding, with no need for live prey or fruit. The main task is simply swapping in fresh jelly regularly.
Q.Is this an imported species — are there any regulations?: A.The Alcides Stag Beetle is not subject to CITES. There are no special regulatory procedures needed to keep or acquire one.