Forked Fungus Beetle
Bolitotherus cornutus
This record describes Bolitotherus cornutus (species). Recorded family: Tenebrionidae. Recorded order: Coleoptera.
Identification and Appearance

The male has a pair of stout, forward pointing horns Beetles always make the entrances through the top of the sporocarp, whether they are living in Ganoderma applanatum in the northern part of their range or in G. lucidum in the southern part... Those living in the north are generally of a lighter color than those in the south, which tend to be black rather than cocoa brown. (Comment here ) Feign death when disturbed and live more than two years in nature ( 5 ) When attacked they play dead or release noxious, irritating fluids from abdominal glands. The potency of these are determined by the fungus they eat. ( 6 ) The variation of the horn and body size is determined by the quality and quantity of food consumed in the larval stage. Its the mothers choice of egg-laying sites that selects horn and body size. ( 6 )
Wikipedia reference for Bolitotherus cornutus: http://en.wikipedia.org/wiki/Bolitotherus_cornutus.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Tenebrionoidea
- Family
- Tenebrionidae (Darkling Beetles)
- Subfamily
- Tenebrioninae
- Tribe
- Bolitophagini
- Genus
- Bolitotherus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
on hard shelf fungi or in crevices in bark where fungi are attached; especially common on beech and maple trees/logs; active at night ( 4 ) ; under bark ( 5 )
Geographic Range
e. NA (NS-FL to AB-MO-TX) - Map
Diet and Behavior
Diet: Feeds on fungi - Ganoderma alanatum and G. lucidum ( from this Comment ) Will also feed on Fomes fungi ( 6 )
Life History
Fungus with tunnels; tunnel; larva; pupa; adult; fungus with frass, fungus debris and adults
Additional species information
Species notes from the sources
Etymology: Bolitotherus cornutus ( Panzer 1794)
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Bolitotherus cornutus. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
Photos of Forked Fungus Beetle (3)
Photo credits: Contributed by Tony DiTerlizzi; Additional contributions by cotinis , John VanDyk , Beatriz Moisset , Bbarnd , Chuck Entz , Mike Quinn , v belov , marcie oconnor , Marci Hess
Frequently Asked Questions About Forked Fungus Beetle
What is Forked Fungus Beetle?
Forked Fungus Beetle (Bolitotherus cornutus) is a species in the family Tenebrionidae, within the order Coleoptera.
How big is Forked Fungus Beetle?
10-12 mm
How do you identify Forked Fungus Beetle?
The male has a pair of stout, forward pointing horns
Where is Forked Fungus Beetle found?
| Feature | Details |
|---|---|
| Habitat | on hard shelf fungi or in crevices in bark where fungi are attached; especially common on beech and maple trees/logs; active at night ( 4 ) ; under bark ( 5 ) |
| Range | e. NA (NS-FL to AB-MO-TX) - Map |
What does Forked Fungus Beetle eat?
The diet of the Forked Fungus Beetle includes Feeds on fungi - Ganoderma alanatum and G. lucidum ( from this Comment ) Will also feed on Fomes fungi ( 6 ).
What is the life cycle of a Forked Fungus Beetle?
Fungus with tunnels; tunnel; larva; pupa; adult; fungus with frass, fungus debris and adults
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