Allidiostomatinae

Definition

A subfamily of scarab beetles (family Scarabaeidae) restricted to southern South America, with most of its eleven described species endemic to Argentina and others extending into Chile and Peru. The group is poorly known biologically and is one of several small, relictual scarab lineages in the austral region.

Etymology

Example

The allidiostomatine genus Allidiostoma includes species collected at lights in Patagonian steppe habitats, though larval stages and feeding habits remain undocumented.

Related Terms

• Scarabaeidae
• Scarabaeoidea
• relict distribution
• austral fauna
• Endemic

Usage Notes

Treated as a valid subfamily within Scarabaeidae; some classifications may treat related groups differently. The feminine ending -inae follows standard zoological nomenclature for subfamily names. Not to be confused with the superficially similar-sounding Idiostomatinae (a different scarab lineage).