Trogossitidae

Latreille, 1802

bark-gnawing beetles

Genus Guides

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Trogossitidae is a small of beetles in the superfamily Cleroidea, commonly known as bark-gnawing beetles. The family has undergone significant taxonomic revision, with many former members reassigned to separate families (Lophocateridae, Peltidae, Protopeltidae, Rentoniidae, and Thymalidae) as of 2019. Under the modern circumscription, the family contains approximately 400 in 25 , reduced from roughly 600 species in over 50 genera under previous definitions. Members are predominantly predatory and/or mycophagous, with both and larvae associated with wood .

Tenebroides sonorensis by (c) Sue Carnahan, some rights reserved (CC BY), uploaded by Sue Carnahan. Used under a CC-BY license.Calitys by (c) Stanislav Snäll, some rights reserved (CC BY). Used under a CC-BY license.Calitys scabra by (c) Toby, some rights reserved (CC BY), uploaded by Toby. Used under a CC-BY license.

Pronunciation

How to pronounce Trogossitidae: //ˌtrɒɡəˈsɪtɪdiː//

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Identification

Trogossitidae are distinguished from related by their association with wood and their characteristic predatory or fungivorous habits. Members can be separated from the now-segregated families Lophocateridae, Peltidae, and others by the restricted modern definition of Trogossitidae following the 2019 taxonomic revisions. Specific identification to or level requires examination of morphological characters including structure, body form, and other detailed features.

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Habitat

Associated with wood substrates, including under bark and inside bored tunnel galleries in trees. Some are attracted to fire-killed or recently dead conifers, with specific preferences for trees 3–5 years post-fire.

Distribution

distribution with approximately 59 in the Americas and 36 in Australia. The oldest fossil assignable to the modern definition is Microtrogossita from mid-Cretaceous Burmese amber of Myanmar, indicating considerable diversification by that time.

Diet

Predatory on other insects and/or fungivorous, feeding on fungi. Some are specialized of bark beetles (Scolytinae), with documented prey including Pityogenes chalcographus and Taphrorychus bicolor.

Life Cycle

Complete with larval stages developing in wood. Larvae of some are restricted to moist decayed areas in the root systems of standing trees killed by fire or bark beetles.

Behavior

Some respond to of their bark beetle prey, making them attracted to artificial lures targeting pest species. and larvae are generally slow-moving compared to some related .

Ecological Role

of bark beetles and other wood-associated insects, potentially contributing to of forest pests. Their response to prey suggests they may be drawn to areas of high pest .

Human Relevance

Some are inadvertently captured in traps targeting bark beetle pests, which could affect monitoring . Their potential as agents for bark beetles has been suggested but requires further study.

Similar Taxa

  • LophocateridaeFormerly included within Trogossitidae but separated in 2019 taxonomic revision; distinguished by different morphological and presumably biological characteristics
  • PeltidaeFormerly included within Trogossitidae but now recognized as separate ; includes such as Peltis
  • CleridaeRelated within Cleroidea with similar predatory habits but distinguished by morphological features and different associations

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