Sphindidae

Definition

A family of small myxomycophagous beetles (Coleoptera: Polyphaga) whose adults and larvae feed exclusively on slime molds (Myxomycetes). The group is characterized by an elongate body form, clubbed antennae, and a highly specialized life history tied to ephemeral fungal-like fruiting bodies. Fossil evidence includes the extinct subfamily Libanopsinae from Lebanese amber.

Etymology

From Greek sphindē (σφίνδη), a type of wasp or spinning insect, with the family suffix -idae.

Example

Sphindus dubius, a widespread European species, is often found beneath bark or in leaf litter where it locates plasmodial slime molds by chemoreception.

Synonyms

• slime mold beetles

Related Terms

• Coleoptera
• Polyphaga
• Myxomycetes
• myxomycophagy
• Cucujoidea
• Libanopsinae

Usage Notes

Sometimes placed in the superfamily Cucujoidea, though relationships within Polyphaga remain under study. The common name 'slime mold beetles' is functionally accurate but also applies loosely to some Leiodidae (subfamily Leiodinae) and certain Erotylidae; precise identification requires examination of antennal structure and maxillary morphology. The family is small (fewer than 100 described species) and rarely encountered except by mycologists and specialist coleopterists.