Tenebrioninae

Adults distinguished from other Tenebrionidae subfamilies by the combination of: mandible structure (back opposite cutting edge without margination, excavated opposite molar part); ocelli in two transverse groups with fused lenses; antennae with elongate basal articles; bicomute pygidium; and oval, transverse abdominal spiracles. Larvae identified by frontoclypeal suture, dome-like antennal sensorium, simple malar apex, and absence of endocarina and hypostomal rods. Since the 2021 revision, many former Tenebrioninae (including tribes Amphidorini, Blaptini, Dendarini, Opatrini, Pedinini, Platynotini, and Platyscelidini) now belong to Blaptinae.

Collected from soil surfaces of farms, rocky and mountainous areas, storage facilities/godowns, and jungle areas. Some larger species are flightless and ground-dwelling. Specific habitat preferences vary considerably among constituent tribes and genera.

Worldwide distribution. Documented from Pakistan (Sindh province), Korea, and the Seychelles. The subfamily has been recorded across multiple continents, though precise distribution patterns are complicated by ongoing taxonomic revisions.

Adults feed on both fresh and decaying vegetation, including vegetable produce. Several species are pests of flour and cereal products. Members of the tribe Bolitophagini are associated with fungi as hosts.

Larvae of Tenebrioninae are known from descriptions including Polposipus herculeanus; developmental details vary among species. The yellow mealworm beetle (Tenebrio molitor) is reared commercially, indicating a complete metamorphosis life cycle with larval, pupal, and adult stages.

Many larger species are flightless and not capable of sustained flight; this trait has been observed in Uloma simplex and requires further research. Some species are associated with stored products and storage facilities.

Decomposers feeding on decaying vegetation. Some species contribute to nutrient cycling through consumption of plant material. Fungivorous tribes (Bolitophagini) play roles in fungal decomposition.

Several species are commercially important pests of flour and cereal products, including Tribolium castaneum (red flour beetle), T. confusum (confused flour beetle), T. destructor, and Gnathocerus cornutus. Tenebrio molitor larvae (yellow mealworms) are widely used as feeder insects for reptiles and amphibians. The red flour beetle is a popular genetics model organism, especially in studies of intragenomic conflict and population ecology.

• BlaptinaeResurrected subfamily in 2021 that now contains approximately 50% of former Tenebrioninae species (281 genera, ~4000 species), including tribes Amphidorini, Blaptini, Dendarini, Opatrini, Pedinini, Platynotini, and Platyscelidini. Previously considered part of Tenebrioninae.
• PimeliinaeSometimes treated as a tribe within Tenebrioninae, but represents a closely related yet distinct lineage. Distinguished by morphological and likely molecular characters.
• DiaperinaeTribes Crypticini, Pentaphyllini, and Scaphidemini are sometimes placed in Tenebrioninae but more commonly belong to Diaperinae, indicating historical taxonomic confusion between these subfamilies.

• darkling beetle
• flour beetle
• mealworm
• stored product pest
• feeder insect
• model organism

• BugGuide
• Wikipedia
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Taxonomic review of the tribe Bolitophagini in Korea (Coleoptera: Tenebrionidae: Tenebrioninae)
• The larva of Polposipus herculeanus , with observations on its biology and phylogeny (Coleoptera: Tenebrionidae: Tenebrioninae)
• Taxonomic Review of the Fungivorous Tenebrionid Boletoxenus Motschulsky, 1858 (Coleoptera: Tenebrionidae: Tenebrioninae: Bolitophagini) in Korea with Host Fungi
• Taxonomy of subfamily Tenebrioninae (Latreille, 1802) and Pimeliinae (Latreille, 1802) (Coleoptera: Tenebrionidae) with new record from Sindh, Pakistan.