Polyphaga

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Polyphaga
Temporal range: Triassic–Present
Cetonia aurata
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Emery, 1886
Infraorders

Bostrichiformia
Cucujiformia
Elateriformia

Scarabaeiformia

Staphyliniformia

Polyphaga is the largest and most diverse

suborder of beetles
. It comprises 144 families in 16 superfamilies, and displays an enormous variety of specialization and adaptation, with over 350,000 described species, or approximately 90% of the beetle species discovered thus far.

Key characteristics of Polyphaga are that the hind

sternites. Also, the notopleural suture (found under the pronotal shield) is not present.[1]

Etymology

The name of polyphaga is derived from two Greek words: poly-, meaning 'many', and phagein, meaning 'to eat', so the suborder is called the “eaters of many things”.

Classification

The five main infraorders are:

Phylogenetic studies have also suggested that Scirtoidea (

Decliniidae), Clamboidea (Clambidae, Derodontidae, Eucinetidae), Rhinorhipus and Nosodendridae are independent lineages of Polyphaga that lie outside these groups.[2]

The internal classification of Polyphaga involves several superfamilies or series, whose constituents are relatively stable, although some smaller families (whose rank even is disputed) are allocated to different clades by different authors. Large superfamilies include Hydrophiloidea, Staphylinoidea, Scarabaeoidea, Buprestoidea, Byrrhoidea, Elateroidea, and Bostrichoidea.

The infraorder

Curculionoidea
), forming a major radiation.

See also

References

External links