Long-lived
Guides
Aphonopelma
Aphonopelma is a genus of tarantulas in the family Theraphosidae, comprising the majority of North American tarantula species north of Mexico and many Central American species. The genus includes approximately 54 currently recognized species, though taxonomy remains problematic due to morphological similarity among species. Members are generally large-bodied with leg spans of 6 inches or more, and possess urticating hairs used in defense. The genus exhibits sexual dimorphism, with mature males becoming more active and wander in search of sedentary females.
Aphonopelma chalcodes
Desert Blonde Tarantula, Arizona Blonde Tarantula, Western Desert Tarantula, Mexican Blonde Tarantula
Aphonopelma chalcodes is a large-bodied burrowing tarantula native to the Sonoran and Chihuahuan deserts of the southwestern United States and adjacent Mexico. The species exhibits pronounced sexual dimorphism: females are uniformly tan with a pale, densely hairy carapace that gives the "blonde" common name, while males have black legs, copper-colored cephalothorax, and reddish abdomen. Females are sedentary, occupying deep burrows for their entire lives, whereas mature males abandon their burrows to wander in search of mates during summer monsoon season. The species is notable for its longevity, with females living 24–30 years and males 5–10 years, and for its popularity in the pet trade due to docile temperament and relatively low venom toxicity.
Aphonopelma iodius
Desert Tarantula, Great Basin Blonde, Fresno County Blonde, Salt Lake City Brown, Northern Blonde
Aphonopelma iodius is a medium-sized tarantula native to the southwestern United States, inhabiting desert regions of California, Nevada, Arizona, and Utah. The species has undergone significant taxonomic revision, with former species A. angusi, A. melanium, A. nevadanum, and A. smithii synonymized under it based on morphological and molecular analyses. Males reach sexual maturity at approximately seven years and emerge from burrows in autumn to seek mates. Females are long-lived, with documented lifespans exceeding thirty years in captivity.
Aphonopelma moderatum
Rio Grande Gold Tarantula
Aphonopelma moderatum, commonly known as the Rio Grande Gold Tarantula, is a species of tarantula endemic to the Rio Grande Valley of Texas. It is a medium-sized member of the genus Aphonopelma, with females exhibiting distinctive orange and black coloration and exceptional longevity. The species is known for its docile temperament in captivity and has been observed in burrowing behavior as spiderlings, though adults often occupy hides rather than constructing deep burrows.
Buprestis aurulenta
golden jewel beetle, golden buprestid, Golden Buprestid Beetle
Buprestis aurulenta, commonly known as the golden jewel beetle or golden buprestid, is a striking metallic wood-boring beetle native to western North America. Adults display brilliant iridescent green coloration with orange margins on the elytra. The species is notable for its exceptionally prolonged larval development, with documented cases of larvae surviving 47 years or more in dry wood before emerging as adults. This longevity makes it one of the most long-lived beetle species known.
Cyclocosmia
cork-lid trapdoor spider, Oreo spider (misnomer)
Cyclocosmia is a genus of mygalomorph trapdoor spiders in the family Halonoproctidae, comprising thirteen species distributed across North America (USA, Mexico) and Southeast Asia (China, Thailand, Vietnam, Laos). These spiders are distinguished by their unique abdominal morphology: an abruptly truncated, hardened posterior disc strengthened by ribs and grooves, used to seal burrow entrances when threatened. The genus was first described by Anton Ausserer in 1871 and serves as the type genus for Halonoproctidae. Species are long-lived, slow-maturing, and have demanding habitat requirements that make them rare in collections despite local abundance.
Euctenizidae
Wafer-lid Trapdoor Spiders
Euctenizidae is a family of mygalomorph spiders elevated from subfamily status in 2012. The family contains approximately 79 described species across eight genera, including Aptostichus, Myrmekiaphila, and Promyrmekiaphila. Members are characterized by their fossorial lifestyle and construction of silk-lined burrows with distinctive trapdoors. The family is now considered more closely related to Idiopidae than to other trapdoor spider families.
Homalonychus theologus
American sand assassin
Homalonychus theologus is a true spider in the obscure family Homalonychidae, found in the southwestern United States and northwestern Mexico. It is one of only two species in its genus. The species exhibits distinctive sand-encrusted camouflage achieved through specialized setae that trap soil particles. It does not construct webs and has been observed employing self-burying behavior during molting and mating.
Homarus americanus
American lobster, Atlantic lobster, Canadian lobster, true lobster, northern lobster, Canadian Reds, Maine lobster
Homarus americanus is a large marine crustacean found on the Atlantic coast of North America. It is the heaviest crustacean in the world, capable of exceeding 20 kg and 64 cm body length. The species is commercially important, supporting major fisheries from Labrador to New Jersey. It inhabits benthic environments from shallow coastal waters to depths exceeding 700 meters.
Mygalomorphae
Mygalomorphs, Orthognatha
Mygalomorphae is one of three major lineages of living spiders, comprising over 3,000 species across 32 families. Members include tarantulas, trapdoor spiders, and Australian funnel-web spiders. They are characterized by downward-pointing chelicerae, two pairs of book lungs, and often large body sizes with exceptional longevity—some individuals live 25 years or more. The group exhibits remarkable morphological conservatism across its global distribution.
Myrmekiaphila
Ant-loving trapdoor spiders
Myrmekiaphila is a genus of mygalomorph trapdoor spiders in the family Euctenizidae, endemic to the southeastern United States. The genus was first described by G.F. Atkinson in 1886 and has undergone several taxonomic revisions, most recently placed in Euctenizidae in 2012. These spiders construct subterranean silk-lined burrows with silken-soil trap doors, and some species uniquely build side chambers closed by secondary trap doors. The genus name derives from Greek roots meaning 'ant-loving,' referencing their frequent association with ant nests.
Neohermes filicornis
Fishfly
Neohermes filicornis is a long-lived aquatic fishfly (Megaloptera: Corydalidae) inhabiting intermittent streams across North America. The species exhibits burrowing behavior and is adapted to temporary water systems with periodic drying. Adults are terrestrial while larvae are aquatic predators with extended larval development periods.
Pacifastacus leniusculus
Signal Crayfish
The signal crayfish is a large North American freshwater crayfish introduced to Europe in the 1960s to replace declining native fisheries. It has become one of the most ecologically impactful invasive decapods in Europe, outcompeting native crayfish and serving as a carrier of crayfish plague (Aphanomyces astaci). The species establishes self-sustaining populations rapidly, with six age cohorts documented within a few years of introduction. It shows sex- and size-specific coloration patterns, with males displaying more saturated and brighter ventral claw surfaces than females, suggesting a role in intraspecific communication.
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rufipes
Red-legged Purseweb Spider
Sphodros rufipes is a mygalomorph spider in the purseweb spider family Atypidae, native to eastern and southern North America. First described as Atypus rufipes by Latreille in 1829, it was transferred to the genus Sphodros in 1980. The species is notable for its distinctive hunting strategy using a silk tunnel constructed against trees or other objects, and for the pronounced sexual dimorphism in leg coloration. Females have been documented living up to 7 years.
Tliltocatl vagans
Mexican red-rump tarantula, Mexican red rump
Tliltocatl vagans is a large terrestrial tarantula native to Mexico and Central America, distinguished by the distinctive red hairs covering its abdomen. Formerly placed in the genus Brachypelma, this species was reclassified to Tliltocatl following taxonomic revision accepted by the World Spider Catalog. It is a burrowing, nocturnal predator that constructs underground galleries. The species has established a non-native population in Florida since 1996, introduced through the pet trade. Females are notably long-lived, potentially reaching 25–40 years in captivity. Due to habitat destruction, collection pressure, and high juvenile mortality, T. vagans is considered vulnerable to extinction and is protected under CITES Appendix II.