AnimaliaHighest rank in taxonomy. Groups all life into domains: Animalia, Plantae, Fungi, etc.IUCN NEInternational Union for Conservation of Nature — the world authority on species extinction risk, using standardized criteria. — Not Evaluated — not yet assessed against the IUCN Red List criteria.In ProgressCurrent stage of this record in the editorial review workflow. Recent Sighting
Zopherus nodulosus
Ironclad Beetle
Solier, 1841
Detailed Texts Multi-lang
A remarkably robust beetle known for its incredibly thick, rigid exoskeleton. The dorsal surface features an intricate matte pattern composed of black nodules, bumps, and yellowish-white or cream-colored patches that create a stark contrast. The elytra are completely fused together, making the beetle entirely flightless and practically crush-proof.
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Anonymous Curator
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Under Review
Last modified by
Julia Trouin
TaxonomyBiological classification ranks placing this species within the tree of life, from Kingdom down to Genus.
PhylumRank below Kingdom. Groups organisms sharing a fundamental body plan (e.g., Chordata = vertebrates and some invertebrates).Arthropoda
ClassRank below Phylum. Subdivides by structural traits (e.g., Mammalia, Aves, Reptilia, Insecta).Insecta
OrderRank below Class. Groups related families sharing common ancestry (e.g., Carnivora, Primates).Coleoptera
FamilyRank below Order. Groups closely related genera (e.g., Felidae = cats, Canidae = dogs).Zopheridae
GenusRank just above Species. The first word in the two-part binomial scientific name.Zopherus
Taxonomic AuthorityThe scientist who first formally described and published this species, followed by the year of publication.Solier, 1841
Record Completeness
95%Coming soon
Ecology & StatusHow this species lives: habitat preferences, diet, behavior, population status, and role in its ecosystem.
OriginWhether the species is native (evolved here), endemic (found only here), or introduced by human activity.
Native
Population TrendDirection of change in population size over time: increasing, stable, decreasing, or unknown.
Unknown
Breeding SeasonTime of year when this species typically reproduces or flowers.
Year Round
Trophic RolePosition in the food chain: producer, herbivore, carnivore, omnivore, decomposer, or parasite.
Herbivore
Recent SightingsWhether this species has been observed in the wild in Costa Rica within recent years.
Yes
Habitat SummaryOverview of the specific ecosystems and environments where this species is found in Costa Rica. Multi-lang
Native to Central America and Mexico, typically inhabiting dry tropical forests, oak forests, and semi-arid scrublands. They spend most of their lives hidden beneath loose bark, inside cavities of dead or dying hardwood trees, or under decaying logs.BehaviourDaily activity patterns, movement, territory use, foraging style, and seasonal behavioral changes. Multi-lang
Diurnal or crepuscular. These beetles are slow-moving and rely entirely on their heavy armor and cryptic coloration for survival rather than speed. They crawl slowly along the bark of host trees and can remain motionless for hours if they sense vibrations from potential predators.Social ActivitySocial structure: whether the species is solitary, paired, or colonial; hierarchy and communication. Multi-lang
Solitary. They spend their time exploring habitats independently. They do not exhibit social hierarchy or aggregate in large numbers, except when microhabitats with rich lichen growth or prime decaying logs attract a few individuals to the same spot.Feeding GuildWhat the species eats, how it forages or hunts, and its role as a consumer in the food web. Multi-lang
Herbivore / Fungivore (Detritivore as larvae).Trophic Chain DetailsSpecific interactions in local food webs: prey species, predators, competitors, and scavengers. Multi-lang
Larvae develop entirely within dead wood, feeding on decaying plant material, cellulose, and wood-boring fungi. Adults feed on lichens, fungi, and leaking sap found on tree trunks. Predators are few due to the beetle's hard shell, but include specialized rodents, woodpeckers with strong beaks, and large reptiles.Reproductive BehaviourMating strategies, courtship displays, nesting or spawning behavior, and parental care. Multi-lang
Reproduction is a slow process due to their low metabolic rate. After finding a mate on the tree bark, females seek out optimal deep cracks in dead, rotting hardwood logs or tree stumps to deposit their eggs safely, ensuring the larvae have immediate access to decaying organic content upon hatching.Physical Measures
Length (cm)
3.0 - 4.5 cm
Weight (Grams)
4 g - 8 g
Offspring per cycleTypical number of young (live births, eggs, or seeds) produced by one adult in a single reproductive event or breeding season.20 - 60
Sexual DimorphismObservable physical differences between males and females of the same species (e.g., size, coloration, features).No
Lifespan
Sexual MaturityAge at which the individual becomes capable of reproducing for the first time.
12 - 24 Months
Gestation / IncubationDuration from fertilization to birth (mammals) or to hatching (egg-laying species).
30 - 45
Lifespan EstimatedExpected duration of life from birth to natural death under wild conditions.
Males12 - 36 Months
Females12 - 36 Months
Evolutionary AdaptationsInherited traits and behaviors that improve the species' survival and reproduction in its specific environment. Multi-lang
The exoskeleton is heavily mineralized and chemically cross-linked, offering unmatched defense against predators. It is so tough that entomologists often need to drill holes into the cuticle before they can safely insert a structural pin through the specimen.
When threatened, they practice thanatosis (playing dead), pulling their legs and short antennae into specialized protective grooves on the underside of their body, turning into an unchewable pebble.
Main ThreatsDocumented pressures reducing the population: habitat loss, hunting, disease, climate change, and invasive species. Multi-lang
Widespread deforestation and target cleaning of dead wood in managed forests remove essential breeding sites and food sources for the wood-boring larvae.
Interesting FactsSurprising or notable facts that highlight what makes this species unique or ecologically important. Multi-lang
Because of their incredible durability, long lifespans, and sedentary habits, some related species of Zopherus have historically been decorated with artificial jewels and worn as living brooches (known as 'makech') in regional traditions.