Mordellidae

Definition

A family of small beetles (order Coleoptera) commonly called tumbling flower beetles or pintail beetles, characterized by an elongated, pointed abdominal tip that enables their characteristic erratic tumbling escape behavior when disturbed. The family comprises approximately 1,500 described species worldwide, with adults typically found on flowers and larvae developing in decaying wood or plant stems.

Etymology

From the type genus Mordella + Latin -idae (family suffix).

Example

When approached, Mordellidae such as Mordella spp. execute rapid, tumbling flight trajectories that make them difficult for predators to track, a behavior facilitated by their flexible, pointed abdomen acting as a lever against substrates.

Synonyms

• Tumbling flower beetles
• pintail beetles

Related Terms

• Coleoptera
• Tenebrionoidea
• flower visitation
• escape behavior
• Elytra
• Coleoptera larvae
• decaying wood habitat

Usage Notes

The common name "tumbling flower beetle" refers specifically to the escape behavior; "pintail beetle" emphasizes the diagnostic abdominal morphology. Larval biology remains poorly known for many species, with most assumed to be xylophagous or stem-boring. The family is placed in the superfamily Tenebrionoidea, though this placement should be verified against current phylogenetic studies.