Derodontoidea

Classification

Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Superfamily: Derodontoidea

Pronunciation

How to pronounce Derodontoidea: /ˌdɛroʊdɒnˈtɔɪdiə/

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Summary

Derodontidae, known as tooth-necked fungus beetles, are a family of small beetles characterized by their spiny pronotum margins and dual ocelli. They have important roles in controlling populations of woolly adelgids and are part of a larger ecosystem as predators and potential bioagents in forestry management.

Physical Characteristics

Small beetles, between 2 and 6 mm in length, typically with spiny margins on their pronotum. The genus Laricobius lacks these spines. Unusual among beetles, they have two ocelli on the top of their heads.

Identification Tips

Look for the presence of spiny margins on pronotum and the two ocelli on the heads to identify species in this family, except for the genus Laricobius which lacks spines.

Habitat

Various, with some species associated with slime molds and others predating on woolly adelgids, primarily in wooded areas where host plants are found.

Distribution

Primarily in the United States, but some species are found in other regions.

Diet

The larvae and adults of the genus Laricobius are predators of woolly adelgids, while some other species may feed on slime molds.

Life Cycle

Details are generally not well-documented, but likely includes egg, larval, pupal, and adult stages typical of beetle life cycles.

Reproduction

Reproduction methods are not specified, but typical for beetles involving laying eggs near hosts or habitats.

Ecosystem Role

Some species serve as biological control agents against pests like balsam woolly adelgid and hemlock woolly adelgid.

Economic Impact

Species of Laricobius are used as biological control agents for pest management in forestry and horticulture.

Collecting Methods

Hand collecting from host plants
Light traps

Preservation Methods

Pinning
Relaxed and then pinned

Evolution

Derodontidae is considered to be related to the Bostrichoidea, which includes various other beetle groups.

Similar Taxa

Bostrichoidea

Misconceptions

There is limited public awareness about the ecological role of Derodontidae as biological control agents, often overshadowed by other pest management strategies.