Chew's Long-jawed Stag Beetle
The Chew's Long-jawed Stag Beetle is native to the island of Borneo. Its standout feature is a long, gently curved pair of mandibles, and wild-caught males have been recorded up to 87.0mm — among the largest in its genus. Described relatively recently in 1994, males show considerable size variation, ranging from 25.0mm to 87.0mm in the wild, with a captive-bred record of 82.0mm. While its dramatic jaws make it a striking beetle to keep, adults typically live only 4 to 6 months, and its care is best suited to experienced keepers. It's worth researching its habits and housing needs thoroughly before bringing one home.
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About Chew's Long-jawed Stag Beetle
A long-jawed stag beetle native to Borneo, known for its gently curved mandibles and a wild record of 87.0mm — among the largest in its genus. Described in 1994, it's best suited to experienced keepers.
7 things to know before welcoming a Chew's Long-jawed Stag Beetle
1Size Varies by Individual
Adult males range widely in size, from 25.0mm to 87.0mm, with mandible length and curvature varying just as much between individuals. The wild record stands at 87.0mm, with a captive-bred record of 82.0mm, and larval-stage care plays a big role in reaching larger sizes.
2Best Suited to Experienced Keepers
This species is generally considered suitable for experienced keepers rather than beginners. It helps to have a working knowledge of temperature and humidity management and breeding setups before bringing one home.
3Adult Lifespan of 4-6 Months
As adults, these beetles typically live for around 4 to 6 months, a general guideline for the genus. Setting up a comfortable environment helps them stay active during that relatively short window.
4Handle the Long Jaws with Care
The long, curved mandibles call for careful handling and thoughtful housing choices. Keeping multiple beetles together isn't recommended, since the jaws can injure legs or bodies during encounters, so solitary housing is standard.
5Warm, Humid Conditions Preferred
As a native of Borneo's tropical environment, this species does best with stable temperature and humidity in captivity. Avoid extreme cold or dryness to help it live out its full lifespan.
6A Relatively Recently Described Species
The Chew's Long-jawed Stag Beetle was first described in 1994, making it relatively new among stag beetles. Care information is still being built up over time, so it helps to keep researching as you go.
7Prepare Housing Before Arrival
Before bringing one home, set up an enclosure, climbing branch, and substrate sized appropriately for an adult beetle. Because the mandibles are long, give it a roomy layout so it doesn't get caught on anything inside the case.
Frequently asked questions about Chew's Long-jawed Stag Beetle
- Q.Is this species suitable for beginners?
- A.This species is generally considered suitable for experienced keepers rather than beginners. It helps to build a foundation in temperature and humidity management and enclosure setup before bringing one home.
- Q.How big do the mandibles get?
- A.Adult males range from 25.0mm to 87.0mm, with a wild record of 87.0mm and a captive-bred record of 82.0mm. Mandible length varies considerably from one individual to the next.
- Q.How long do adults live?
- A.Adults typically live for around 4 to 6 months, a general guideline for the genus that can vary by individual. Providing a comfortable environment helps them make the most of that time.
- Q.Can multiple beetles be kept together?
- A.Because of the long mandibles, housing multiple beetles together carries a risk of injury from pinching, so solitary housing is generally recommended. If housed together, provide ample space and monitor them closely.
- Q.What should I prepare before bringing one home?
- A.It helps to have an appropriately sized enclosure, climbing branch, and substrate ready in advance. Since the mandibles are long, give it a roomy layout so it doesn't get caught on anything in a cramped case.
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