Hysterocrates gabonensis

Hysterocrates gabonensis hails from the lush rainforests and swampy lowlands of West and Central Africa, most notably Gabon (no prizes for guessing that, eh?). Their native habitat tends to be warm, humid, and rather sticky – not the sort of place you’d want to forget your umbrella. These forests offer a great deal of leaf litter and moist soil, perfect for burrowing. In the wild, they’re known to set up shop in deep tunnels or under logs, where they enjoy the shade and dampness. Seasonal temperatures are fairly constant, with minimal drastic swings between day and night, and rainfall can be frequent, so they’re no strangers to soggy conditions.

Adult Hysterocrates gabonensis are impressively sized spiders, with females reaching up to an eye-popping 17–18 cm diagonal leg span, while mature males are usually a bit more modest at around 12–14 cm. Females grow bulkier and are generally longer lived – so if you’re after a long-term companion, she’s your girl. Youngsters start quite small, but after several moults (and a whole lot of patience), H. gabonensis will reach their full size, making them one of the most impressive spiders in any collection.

This species is a classic enthusiast for digging – we’re talking full-on underground construction projects! In captivity, H. gabonensis acts as a perfect example of a fossorial tarantula, spending a hefty chunk of its life in burrows, tunnels, or beneath bark and leaf litter if you’re kind enough to provide it. Most of your interaction will be with the top of its enclosure, marveling at the intricately excavated tunnels and rearranged substrate. Forget couch potatoes; this is the mole of the tarantula world, popping out mainly at night to investigate the surface or nab a quick meal before scuttling back to the safety of its lair.

If you’re looking for an eight-legged partner to stick around for years, H. gabonensis females are a splendid choice, often living 12–15 years with proper care. Males, as is sadly customary in the tarantula world, draw the short straw, typically reaching only 3–5 years before their final samba. Most time is spent hunkered down in their burrow, plotting their next grand excavation. Overall, expect a decade or more of companionship – minus the awkward conversations, of course.

Growth rate in H. gabonensis is best described as moderate – they’re not speed demons, but they won’t leave you twiddling your thumbs forever either. Warmth, regular meals, and good humidity will help them pack on the centimetres. Slings can eat heartily and grow quite fast with frequent, appropriately sized meals, though true adult size can take several years. Patience is key, but the wait is worth it for such a striking spider.

This tarantula is more likely to give you a heart attack with its sudden sprints than with aggression. H. gabonensis is generally secretive and shy, preferring to bolt into its burrow at the first hint of disturbance. If truly cornered, they can put on a proper defensive display, but would much rather sulk in the shadows. Fast-moving and easily startled, they’re not ideal for show-and-tell. Calm, gentle maintenance is key, and expect to glimpse them mainly at night or at feeding time.

The H. gabonensis couldn’t care less for the cold. Aim to keep your enclosure comfortably between 23–27°C (that’s 73–81°F for our calculator-dependent friends). A slight dip at night won’t cause panic, but do avoid draughty or chilly spots, as they’re not fans of British winters. Heating is best provided by warming the room itself or – if absolutely necessary – very, very careful use of a thermostat-controlled heat mat attached to the side of the enclosure, NOT the bottom. It’s important to check that the spider can move away from the heat if it fancies a change of scene.

H. gabonensis relishes a moist environment, so aim for humidity between 70–80%. Achieve this by using a deep, moisture-retentive substrate (like coco fibre mixed with a bit of topsoil) and keeping it nicely damp, especially in the lower layers. Don’t flood the enclosure – soggy is not the same as boggy! A sturdy water dish, always kept full, helps too. Good cross-ventilation is crucial to prevent stagnant air and mould, so balance your humidity with fresh airflow. Occasional light misting helps but avoid drenching your eight-legged tenant.

Let’s be honest – your H. gabonensis is far more interested in rearranging soil than posing for photos. Expect long periods of invisibility as they stay happily hidden underground, occasionally popping up at night to hunt. Some keepers swear they see theirs only during moonless nights or when the spider thinks nobody’s watching. With patience and a red light torch, you’ll appreciate their nocturnal sorties and the artistry of their tunnels.

Webbing isn’t their strong suit – soil shifting is! H. gabonensis will use silk to reinforce tunnels and create dirt plugs for their burrow entrances. Occasionally, you’ll spy a bit of webbing criss-crossing the entrance or lining their tunnels, especially after a big moult or when feeling particularly home-proud. Don’t expect the elaborate webs of an arboreal species, but what their silk lacks in spectacle, it makes up for in sheer functionality.

H. gabonensis boasts a healthy appetite and rarely says no to a snack. Slings can feast on pre-killed or very small live prey like pinhead crickets and fruit flies twice a week. Juveniles devour slightly larger insects, such as small crickets or mealworms, every 5–7 days. Adults enjoy good-sized locusts, dubia roaches or large crickets every 7–10 days. Feeding response is generally enthusiastic – don’t be surprised if you see a dramatic ambush from a hidden burrow. Avoid overfeeding, as excess prey can stress your spider or mould in the humid environment. Remove any uneaten food after 24 hours and always feed according to the spider’s size – giant roaches and tiny slings don’t mix well!

For H. gabonensis, think deep. Opt for a secure, escape-proof enclosure with generous ventilation (cross-ventilation recommended). Depth is more important than floor space – provide 25–30 cm (or more) of compactable, slightly moist substrate so your spider can dig to its heart’s content. A suitable enclosure size for adults is 40 x 30 x 40 cm (L x W x H). Add cork bark or half flowerpots as starter burrows, and never skimp on the depth of substrate. Use a sturdy water dish and ensure the enclosure remains humid but not swampy. Avoid decorative clutter above ground – your spider will just bury it or drag it into a tunnel anyway!

While not the most challenging species, H. gabonensis is better suited to keepers with some experience of fast, fossorial spiders. Their speed, burrowing lifestyle, and need for precise humidity and substrate depth mean they can trip up those new to the hobby. Intermediate keepers comfortable with hands-off husbandry and a knack for soil containment will have a great time. Beginners are best off cutting their teeth on a sturdy terrestrial species before tackling this underground architect.

Hysterocrates gabonensis is a true marvel for those who appreciate ‘underground’ hobbies. Their engineering feats are a joy to observe, and their sheer size is nothing short of impressive. This species isn’t for those seeking a display animal – patience is required, but the reward is witnessing authentic fossorial behaviour. For seasoned keepers craving a digging diva, they add something unique to a collection. Challenges like humidity management and limited visibility only add to the intrigue. Just remember: you’re living in their world, not the other way round!