Darkling-beetles
Guides
Alleculina
comb-clawed beetles
Alleculina is a subtribe of comb-clawed beetles within the darkling beetle family Tenebrionidae. Members of this group were formerly classified as a separate family (Alleculidae) but have been reclassified as a subfamily (Alleculinae) and subsequently as a subtribe within the Tenebrionidae. These beetles do not resemble 'classic' darkling beetles in appearance, presenting a challenge for identification. The subtribe includes genera such as Hymenorus.
Anepsiini
Anepsiini is a tribe of darkling beetles within the subfamily Pimeliinae of the family Tenebrionidae. It was established by J.L. LeConte in 1862. The tribe contains at least four genera distributed in North America. Members of this tribe are part of a diverse group of beetles commonly known as darkling beetles, which are primarily associated with arid and semi-arid environments.
Apocryphini
Apocryphini is a tribe of darkling beetles in the family Tenebrionidae, established by Lacordaire in 1859. The tribe comprises at least four genera distributed across North America, the Palearctic, and the Neotropics. Members are classified within the subfamily Tenebrioninae.
Apsena
Apsena is a genus of darkling beetles (family Tenebrionidae) described by LeConte in 1862. Species in this genus are found in the Nearctic region. The genus contains multiple species, with over 800 observations documented on iNaturalist. As with other tenebrionids, members of this genus are likely associated with arid or semi-arid environments, though specific ecological details remain limited in published literature.
Araeoschizus
Araeoschizus is a genus of darkling beetles (family Tenebrionidae) in the tribe Stenosini. The genus was established by John Lawrence LeConte in 1851. Members of this genus are part of the subfamily Pimeliinae, a diverse group of tenebrionids often associated with arid and semi-arid environments. The genus is native to western North America.
Arthromacra
Arthromacra is a genus of darkling beetles in the family Tenebrionidae, established by Kirby in 1837. The genus is native to North America and has been recorded from the northeastern United States, particularly Vermont. Members of this genus are part of the diverse darkling beetle fauna that inhabits forested and terrestrial environments. The genus is represented by approximately 1,850 observations on iNaturalist, indicating moderate documentation of its species in the field.
Bius
Bius is a genus of darkling beetles (family Tenebrionidae) established by Dejean in 1834. The genus contains at least two described species: Bius estriatus and Bius thoracicus. Members of this genus are classified within the tribe Tenebrionini, subfamily Tenebrioninae. As with many tenebrionid genera, detailed biological information remains limited in the primary literature.
Blaptinae
darkling beetles
Blaptinae is a large subfamily of darkling beetles (Tenebrionidae) containing approximately 283 genera and 4,000 species, classified into 8 tribes. The subfamily was resurrected and redefined in 2021 based on morphological and molecular evidence, with seven tribes transferred from Tenebrioninae. Members are among the most widespread and abundant darkling beetles in arid regions globally, often dominating local invertebrate faunas in desert ecosystems. Ovoviviparity has been documented in at least one tribe (Platynotini), where females carry fully developed first-instar larvae.
Blaptini
Blaptini is a tribe of darkling beetles within the subfamily Blaptinae (Tenebrionidae). The tribe contains more than 30 genera and was moved from Tenebrioninae to the resurrected subfamily Blaptinae in 2021, representing a major taxonomic reclassification. Members are primarily distributed in arid and semi-arid regions of Asia, with notable diversity on the Qinghai-Xizang (Tibetan) Plateau and in the Mediterranean basin. The tribe includes flightless species adapted to high-elevation and xeric environments.
Capnochroa
comb-clawed beetles
Capnochroa is a genus of comb-clawed beetles established by LeConte in 1862. The genus contains at least two described species: C. fuliginosa and C. senilis. These beetles belong to the family Tenebrionidae, a large and diverse group of darkling beetles. The genus has been documented in the northeastern United States, with records from Vermont.
Cibdelis
Cibdelis is a genus of darkling beetles in the subfamily Stenochiinae, distributed in the Nearctic region. The genus includes at least one well-documented species, Cibdelis blaschkei, which inhabits forested regions of California. Larvae and pupae develop in soft, rotten, dry wood of dead branches on living trees or recently fallen sections. Both life stages possess antipredator defense structures, including urogomphi (pinching organs) on the terminal abdominal segments.
Cnemeplatiini
Cnemeplatiini is a tribe of darkling beetles within the subfamily Pimeliinae. The tribe comprises approximately nine genera distributed across multiple biogeographic regions including the Palearctic, Indomalaya, tropical Africa, Australasia, and the Americas. Members are classified in the family Tenebrionidae, a large and diverse group of beetles commonly known as darkling beetles.
Conibius
Conibius is a genus of darkling beetles (family Tenebrionidae) established by John Lawrence LeConte in 1851. The genus occurs across the Nearctic, Neotropic, and Oceania biogeographic realms, with 116 iNaturalist observations indicating moderate documentation. As a member of Tenebrionidae, these beetles are characterized by hardened forewings (elytra) and generally cryptic habits. The genus lacks significant economic importance and has received limited dedicated study.
Coniontini
Coniontini is a tribe of darkling beetles within the subfamily Pimeliinae of the family Tenebrionidae. The tribe contains at least four genera distributed in North America. Notable included genera are Coelus (dune beetles), Coniontis, Conisattus, and Eusattus. Members are ground-dwelling beetles associated with arid and sandy environments.
Crypticini
Crypticini is a tribe of darkling beetles within the subfamily Diaperinae, family Tenebrionidae. The tribe was established by Brullé in 1832 and contains multiple genera distributed across various regions. Members are small to medium-sized beetles often associated with decaying organic matter and moist microhabitats. The tribe is taxonomically stable and widely recorded in beetle fauna surveys.
Cryptoglossini
Cryptoglossini is a tribe of darkling beetles within the subfamily Pimeliinae of the family Tenebrionidae. It contains at least three genera: Asbolus, Cryptoglossa, and Schizillus. Members are found in North America. The genus Cryptoglossa contains species commonly known as death-feigning beetles, referring to their defensive thanatosis behavior.
Diaperinae
Diaperinae is a subfamily of darkling beetles (Tenebrionidae) comprising more than 120 genera organized into 11 tribes. The subfamily exhibits considerable ecological diversity, including fungivorous species that inhabit fruiting bodies of bracket fungi, myrmecophilous species that live commensally within ant nests, and free-living forms. Some species display specialized adaptations such as reduced eyes for subterranean life, compact rounded body shapes for physical defense against ants, and cuticular hydrocarbon mimicry of host ant recognition signals.
Eutochia
Eutochia is a genus of darkling beetles in the family Tenebrionidae, established by LeConte in 1862. The genus contains relatively few described species and is characterized by its placement within the diverse tenebrionid radiation. Members of this genus are small to medium-sized beetles with the general body plan typical of many Tenebrionidae. The genus appears to be sparsely collected and poorly represented in biological collections.
Gnathidiini
Gnathidiini is a tribe of darkling beetles (Tenebrionidae) in the subfamily Diaperinae, established by Gebien in 1921. The tribe includes the genus Micropeneta, which was recently recorded from China for the first time with the description of Micropeneta qilin. Members of this tribe have been documented from Borneo, Taiwan, Australia, and the South Pacific region. As a tribe within Diaperinae, Gnathidiini represents a distinct lineage of tenebrionid beetles with a disjunct distribution across the Indo-Pacific.
Hymenochara
Hymenochara is a genus of darkling beetles in the family Tenebrionidae, described by Campbell in 1978. The genus is poorly documented in scientific literature, with limited information available on its species composition, biology, and ecology. It belongs to the diverse tenebrionid lineage, which comprises predominantly detritivorous and xerophilic beetles. The genus appears to be rarely encountered, with few observations recorded in biodiversity databases.
Hymenorus
comb-clawed beetles
Hymenorus is a genus of comb-clawed beetles in the family Tenebrionidae, containing more than 160 described species. These beetles were formerly classified in their own family Alleculidae but are now recognized as a subfamily within Tenebrionidae. They are characterized by their distinctive antennae and do not conform to the typical appearance of 'classic' darkling beetles.
Lagriinae
Long-jointed Beetles
Lagriinae is a subfamily of darkling beetles within the family Tenebrionidae, comprising more than 270 genera grouped into 11 tribes. Adults are medium-sized (5–12 mm) with characteristic Tenebrionidae features including a 5-5-4 tarsal formula and antennal bases concealed by canthi. The subfamily is notable for its defensive symbiosis with Burkholderia bacteria that produce the antifungal compound lagriamide, protecting eggs and larvae from antagonistic fungi. This symbiosis has evolved through multiple independent horizontal acquisition events rather than strict co-diversification.
Micromes
Micromes is a genus of darkling beetles in the family Tenebrionidae, described by Casey in 1907. The genus is native to the Nearctic region. As a member of Tenebrionidae, it belongs to a large and diverse family of beetles commonly associated with arid and semi-arid environments. Specific information about the species within this genus and their biology remains poorly documented.
Microschatia
Microschatia is a genus of darkling beetles (family Tenebrionidae) found in arid regions of southwestern North America. The genus was established by Solier in 1836 and contains approximately 15 described species. These beetles inhabit dryland environments and are adapted to xeric conditions. The genus is taxonomically well-established within the Tenebrionidae, though detailed biological studies remain limited for many species.
Mycetochara
comb-clawed beetles
Mycetochara is a genus of comb-clawed beetles in the family Tenebrionidae, containing at least 30 described species. The genus is classified in the subfamily Alleculinae and is distributed across Europe, Russia, and parts of North America. Recent taxonomic revisions have clarified species boundaries in European Russia and the Russian Caucasus, describing new species and resolving synonymies.
Neomida
Neomida is a genus of darkling beetles (family Tenebrionidae) containing approximately 18 described species. The genus was established by Latreille in 1829. At least one species, Neomida bicornis, has been documented in residential areas in the central United States, where adults are attracted to artificial light sources at night.
Opatrina
Opatrina is a subtribe of darkling beetles (family Tenebrionidae) established by Brullé in 1832. It belongs to the tribe Opatrini within the subfamily Blaptinae. The subtribe contains multiple genera distributed in Southern Africa, including Helibatus (with two known species: H. morio and H. banaszkiewiczae) and Planostibes. Members of this subtribe are characterized by morphological features of the metaventrum used in species-level identification.
Opatrini
darkling beetles
Opatrini is a tribe of darkling beetles (Tenebrionidae) comprising approximately 281 genera and about 4,000 species, representing one of the most species-rich lineages within the family. The tribe was historically placed in subfamily Tenebrioninae but was transferred to the resurrected subfamily Blaptinae in 2021 based on phylogenetic analyses. The fossil genus Eupachypterus from Eocene Oise amber demonstrates that Opatrini-like morphology has persisted for over 50 million years. The tribe includes several subtribes, with molecular studies supporting the monophyly of Blapstinina and revealing complex relationships among geographically distributed genera.
Pechalius
Pechalius is a genus of darkling beetles (family Tenebrionidae) established by Casey in 1907. The genus is distributed in the Nearctic and Neotropical regions. It is represented by a small number of observations and poorly documented in the literature. Species-level taxonomy remains incompletely resolved.
Pedinini
Pedinini is a tribe of darkling beetles (family Tenebrionidae) comprising approximately 19 genera. Molecular evidence from Kamiński et al. (2021) supports a revised concept recognizing three subtribes: Helopinina, Leichenina, and Pedinina. The tribe has a predominantly Afrotropical distribution, with genera occurring in Southern Africa, East Africa, and Madagascar. Taxonomic revisions have been published for multiple genera including Anaxius, Tragardhus, Quadrideres, and Anchophthalmops.
Phaleriini
Phaleriini is a tribe of darkling beetles within the family Tenebrionidae, subfamily Diaperinae. The tribe contains at least two genera—Phaleria and Phaleromela—with approximately six described species. Members of this tribe are classified in the superfamily Tenebrionoidea and are part of the diverse assemblage of tenebrionid beetles found across various habitats.
Phegoneus
Phegoneus is a genus of darkling beetles (family Tenebrionidae) described by Casey in 1907. The genus is distributed in the Nearctic and Neotropical regions, with very few observations documented in biodiversity databases. As a member of the speciose family Tenebrionidae, species in this genus likely exhibit the hardened forewings (elytra) and general body plan characteristic of the family. The genus remains poorly known, with limited published information on its biology and ecology.
Pimeliinae
Pimeliinae is a subfamily of darkling beetles (Tenebrionidae) comprising multiple tribes distributed across arid and semi-arid regions worldwide. The subfamily includes notable groups such as the Sepidiini of the Afrotropical Realm, whose members Ocnodes and Psammodes are known as "toktokkies" for their distinctive tapping communication behavior. Several genera exhibit morphological adaptations for fossorial life, including conical peg sensilla on tibiae. The subfamily encompasses both flightless and flying species, with some of the largest tenebrionid species such as Stridulomus sulcicollis (~80 mm).
Platynotini
Platynotini is a tribe of darkling beetles within the family Tenebrionidae, containing more than 70 genera distributed across multiple biogeographic regions including North and South America, the southern Palaearctic, the Afrotropical region, and the Indomalayan realm. The tribe is distinguished from other Blaptinae tribes by the presence of a stridulatory gula used for sound production. Recent molecular phylogenetic studies have strongly supported the monophyly of Platynotini. Members of this tribe exhibit considerable morphological diversity, with some African species such as Anomalipus being heavily built and armored, adapted to dense bush-covered savanna habitats.
Poecilocrypticus
Poecilocrypticus is a genus of darkling beetles (family Tenebrionidae) described by Gebien in 1928. The genus is distributed across the Nearctic and Neotropical realms. As with many tenebrionid genera, species-level diversity and natural history remain incompletely documented. The genus belongs to a large family of beetles predominantly associated with arid and semi-arid environments.
Rhypasma
Rhypasma is a genus of darkling beetles (family Tenebrionidae) established by Francis Pascoe in 1862. The genus occurs in the Neotropical region. As a member of the speciose family Tenebrionidae, species in this genus are likely ground-dwelling or associated with decaying organic matter, though specific natural history details remain poorly documented.
Statira pluripunctata
Statira pluripunctata is a species of darkling beetle in the family Tenebrionidae, specifically within the subfamily Lagriinae (formerly treated as the separate family Lagriidae). The genus Statira comprises 'long-jointed beetles' characterized by elongated antennal segments that differ from the bead-like antennae typical of many other darkling beetles. This species was described by George Henry Horn in 1888 and is known from Mexico. Members of this genus are considered 'aberrant' darkling beetles that do not conform to the typical morphological expectations for the family.
Stenochiinae
Stenochiinae is a subfamily of darkling beetles (Tenebrionidae) comprising over 390 genera. It is divided into three tribes: Cnodalonini, Stenochiini, and Talanini. The subfamily has a mainly pantropical distribution with some species extending to higher latitudes. Recent phylogenetic studies suggest that tribal classifications within Stenochiinae may require systematic rearrangement, as morphological characters shared between Stenochiini and Cnodalonini complicate their separation.
Stenomorpha
Stenomorpha is a large genus of darkling beetles (family Tenebrionidae) comprising more than 160 described species and subspecies. The genus was established by Solier in 1836 and belongs to the tribe Asidini within subfamily Pimeliinae. Species-level taxonomy has been historically neglected, with no modern revision for nearly 175 years until recent work by Keller (2008) and others. The genus exhibits notable diversity in the southwestern United States and Mexico, with some species occurring in specialized habitats including California vernal pools and the Cuatrociénegas Protected Area in Coahuila, Mexico.
Stenosini
darkling beetles
Stenosini is a tribe of darkling beetles (family Tenebrionidae, subfamily Pimeliinae) containing over 40 genera. Members are generally small-bodied and have a pantropical distribution. The tribe is characterized by specific morphological features including non-divided eyes and distinctive antennal proportions. Some species are associated with ants, rodent nests, and soil.
Strongylium
darkling beetles
Strongylium is a large genus of darkling beetles (Tenebrionidae: Stenochiinae) containing more than 1,400 described species, making it one of the most species-rich genera in both the family and subfamily. The genus exhibits a broad tropical and subtropical distribution across the Old and New Worlds, with particularly high diversity in the Neotropics (over 300 species). Species-level identification is challenging due to the genus's size and morphological diversity, often requiring specialist knowledge or detailed examination.
Tarpela
Tarpela is a genus of darkling beetles in the family Tenebrionidae, established by Bates in 1870. The genus contains approximately five described species distributed across Asia and North America. Species include T. formosana and T. zoltani from Taiwan, T. micans from Europe and Asia, and T. undulata and T. venusta from North America.
Texaponium
Texaponium is a genus of darkling beetles in the family Tenebrionidae, described by Thomas in 1984. It belongs to the order Coleoptera and is currently classified within the Nearctic biogeographic region. The genus contains species of small to medium-sized beetles with the general characteristics of the Tenebrionidae family. Very limited information is available about this genus, with minimal observational records documented.
Triboliini
Triboliini is a tribe of darkling beetles (family Tenebrionidae) containing approximately 10 genera. The tribe includes the globally distributed genus Tribolium, commonly known as flour beetles, which are significant pests of stored grain products. Other genera exhibit more restricted geographic distributions, primarily in the Neotropics, North America, tropical Africa, Indomalaya, and Oceania. Triboliini is classified within the subfamily Tenebrioninae and was established by Gistel in 1848.
Trichiotes
Trichiotes is a genus of darkling beetles (family Tenebrionidae) described by Casey in 1907. The genus is native to the Nearctic region. Like other tenebrionids, members of this genus are generally associated with arid or semi-arid habitats. The genus is poorly documented, with minimal published biological information available.
Triorophus
Triorophus is a genus of darkling beetles (family Tenebrionidae) within the tribe Edrotini. The genus was established by J.L. LeConte in 1851. Members of this genus are part of the subfamily Pimeliinae, a group often associated with arid and semi-arid environments. The genus contains multiple species distributed in North America, particularly in western regions.
Tyrtaeus
Tyrtaeus is a genus of darkling beetles in the family Tenebrionidae, established by Champion in 1913. The genus has a broad distribution spanning multiple biogeographic regions including the Afrotropical, Australasian, and Neotropical realms. As with other tenebrionid beetles, members of this genus are likely adapted to arid and semi-arid environments.
Ulomini
darkling beetles
Ulomini is a tribe of darkling beetles (Tenebrionidae) established by Blanchard in 1845. The tribe contains more than 20 genera, including the large genus Uloma with over 200 species and subspecies worldwide. Members are primarily associated with forest habitats and decaying wood. Larval stages of several species have been described, showing oligopod morphology with diagnostic abdominal segment features.
Usechini
Usechini is a tribe of darkling beetles in the family Zopheridae, subfamily Zopherinae. The tribe was established by G.H. Horn in 1867. Members of this tribe are small to medium-sized beetles characterized by compact, often heavily sculptured bodies. The tribe is relatively poorly known, with limited published biological and ecological information available.
Vacronini
Vacronini is a tribe of darkling beetles within the subfamily Pimeliinae, family Tenebrionidae. The tribe was established by Gebien in 1910 and comprises at least four genera with a disjunct distribution across North America and Australasia. Members are classified within the superfamily Tenebrionoidea, a diverse group of beetles commonly associated with arid and semi-arid environments.
Xylitini
Xylitini is a tribe of darkling beetles within the family Melandryidae, established by C.G. Thomson in 1864. Members of this tribe are primarily associated with dead and decaying wood, where they develop as larvae. The tribe includes several genera of small to medium-sized beetles that are part of the broader saproxylic beetle community.
Xylopinus
Xylopinus is a genus of darkling beetles in the family Tenebrionidae, established by LeConte in 1862. The genus contains at least three described species distributed in North America. Members of this genus are part of the diverse darkling beetle fauna, which are generally associated with dry or decaying organic matter. The genus name suggests an association with wood (from Greek xylon, meaning wood), though specific habitat preferences for Xylopinus species are not well documented.