Brown Recluse
Loxosceles reclusa
The Loxosceles reclusa, sadly known as 'Brown Recluse'. Along with the black widow, it is the other spider of severe medical relevance in North America. Aesthetically it is an anonymous and insignificant spider (0.6-0.8 inches), of a sand brown or light brown color. Its only distinctive mark is the 'violin' shaped spot on the carapace. However, it possesses a formidable necrotoxic venom (Loxoscelism), capable of causing deep necrotic ulcerations in human tissues. It is a shy, non-aggressive and nocturnal (wandering) spider, which bites only if trapped in clothes or crushed. Keeping requires extreme caution and inviolable escape protocols.
Umgebung
Terrestrisch
Luftfeuchtigkeit
40 - 50 %
Tagestemperatur
20 - 26 °C
Nachttemperatur
18 - 21 °C
Artbeschreibung
Geographic Origin and Habitat: This recovery makes no geographic-origin or habitat statement beyond the cited facts.
Taxonomy and Genetics: GBIF Backbone Taxonomy lists Loxosceles reclusa Gertsch & Mulaik, 1940 as an accepted species in genus Loxosceles, family Sicariidae and order Araneae. This recovery makes no genetic statement beyond the cited facts.
Behaviour and Habits: This recovery makes no behavioural statement beyond the cited facts.
Morphology and Sexual Dimorphism: This recovery makes no morphological or sex-comparison statement beyond the cited facts.
Pflege, Zucht und Mitbewohner
Terrarium Setup: A biology study summarized by UF/IFAS recorded 430 of 626 brown recluse spiders in buildings and outbuildings, especially in boxes and among papers. This recovery retains that field observation and does not turn it into a terrarium-design instruction.
Lighting and Heating: This recovery sets no lighting or temperature parameter.
Humidity and Hydration: The cited biology section reports that the observed specimens seemed to prefer dry conditions. This recovery does not derive a humidity target from that observation.
Feeding and Supplementation: The cited biology section reports prey consisting of other arthropods, including other spiders and ants. This recovery adds no feeding quantity, frequency, or supplementation instruction.
Compatibility and Cohabitation: This recovery makes no cohabitation claim.
Health and Common Diseases: The UF/IFAS profile says brown recluse spiders usually bite only when trapped next to a person's skin. This recovery provides no medical diagnosis or treatment instruction.
Geografische Herkunft und Verbreitung
Diese Art stammt aus: Nord America (Abitazioni, fienili, cataste di legna e zone secche degli Stati Uniti centro-meridionali).
Ursprung
Nordamerika
Profil der terrestrischen Wirbellosen
- Diät
- Insectivore
- Loxosceles reclusa requires a diet rich in live invertebrate prey, relying on its keen senses and agility to hunt. Common feeder choices include small crickets, fruit flies for spiderlings, and appropriately sized roaches. Their fast metabolism sometimes necessitates more frequent feeding schedules depending on their specific size and age. Hydration is also crucial, often obtained from the moisture in their prey or a fine mist. Uneaten prey should be promptly removed to prevent enclosure contamination.
- Erwachsenengröße
- 1.2 cm
- Lebensstil/Mikrohabitat
- Terrestrial
- The lifestyle of Loxosceles reclusa demands a carefully structured environment that caters to its specific terrestrial or arboreal nature. Owners must ensure a proper temperature gradient, allowing the animal to thermoregulate as needed. Their enclosures should offer multiple hides and climbing opportunities if appropriate for the species. Solitary housing is absolutely necessary to prevent territorial disputes and injury. Maintaining high standards of hygiene is critical for their long-term health.
- Aktivitätszyklus
- Nocturnal
- The activity pattern of Loxosceles reclusa typically aligns with crepuscular or nocturnal cycles. During the day, they remain securely tucked away in their hides to avoid desiccation and predators. As light levels drop, they emerge to actively forage, hunt, or explore their immediate surroundings. Artificial lighting in their enclosure should mimic natural day-night cycles without being overly intense. Disruptions to this cycle can cause feeding strikes or lethargy over time.
- Sozialität
- Solitary
- This species is completely solitary and possesses highly cannibalistic tendencies. They must always be kept in individual enclosures, as any attempt at cohabitation will quickly result in cannibalism.
- Reproduktion
- Oviparous
- Reproduction in Loxosceles reclusa requires careful conditioning and precise environmental parameters to ensure success. The male must be properly introduced to the female's enclosure to avoid immediate predation or aggressive behaviors. Following successful mating, the female will typically begin to construct an egg sac after a gestation period that varies by species. It is crucial to monitor the temperature and humidity to ensure the viability of the eggs. Once the young emerge, they should be separated promptly to prevent cannibalism.
- Giftig
- Yes
- Handhabungstoleranz
- Display only
- Handling Loxosceles reclusa is generally strongly discouraged due to the risk of stress to the animal and potential injury. A fall from even a short height can result in a fatal abdominal rupture or severe trauma. If moving the specimen is absolutely necessary, use a soft catch cup or a sterile brush to gently guide them. Owners should respect the creature's need for personal space and observe them strictly as display animals. Avoiding direct handling minimizes the chance of unpredictable defensive bites or stings.
- Brumation
- Nicht erforderlich
- In its natural habitat, Loxosceles reclusa may experience seasonal cooling that slows down its metabolic rate. In captivity, true brumation is rarely required unless breeding is explicitly planned. If temperatures naturally drop during winter, feeding frequency should be adjusted accordingly to match their reduced metabolism. It is important never to let the enclosure become freezing or excessively damp during these cooler periods. Careful monitoring ensures the specimen remains healthy until warmer conditions resume.
- Häutung
- Regular
- Molting is a critical and highly sensitive phase in the life cycle of Loxosceles reclusa. Leading up to a molt, they will often refuse food, become sluggish, and sometimes seal themselves entirely inside their hide. It is absolutely crucial to maintain proper humidity and never disturb the animal while it is molting. After shedding its exoskeleton, the animal will be extremely soft and vulnerable for several days. Feeding must be strictly withheld until the fangs or pincers have fully hardened to prevent fatal injuries.
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