Mordellinae

Mordellinae
Mordella aculeata; note the "pintail"
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Superfamily:	Tenebrionoidea
Family:	Mordellidae
Subfamily:	Mordellinae Latreille, 1802

Mordellinae is a subfamily of beetles commonly known as tumbling flower beetles for the typical irregular movements they make when escaping predators, or as pintail beetles due to their abdominal tip which aids them in performing these tumbling movements.

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Wikipedia