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 300,000 described species, or approximately 90% of the beetle species so far discovered.
Key characteristics of
* 1 Etymology * 2 Classification * 3 See also * 4 References * 5 External links
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”.
The five infraorders are:
* Bostrichiformia — including furniture beetles and skin beetles * Cucujiformia — includes lady beetles , longhorn beetles , weevils , checkered beetles and leaf beetles * Elateriformia — includes click beetles and fireflies * Scarabaeiformia — includes scarab beetles and stag beetles * Staphyliniformia — includes rove beetles and water scavenger beetles
The internal classification of
The infraorder Cucujiformia includes the vast majority of phytophagous (plant-eating) beetles, united by cryptonephric Malpighian tubules of the normal type, a cone ommatidium with open rhabdom , and lack of functional spiracles on the eighth abdominal segment. Constituent superfamilies of Cucujiformia are Cleroidea , Cucujoidea , Tenebrionoidea , Chrysomeloidea , and Curculionoidea . Evidently adoption of a phytophagous lifestyle correlates with taxon diversity in beetles, with Cucujiformia, especially weevils ( Curculionoidea ), forming a major radiation.
* ^ Johnson, Norman F.; Triplehorn, Charles A. (2004). Borror and DeLong's Introduction to the Study of Insects (7th ed.). Belmont: Brooks/Cole. pp. 365–400, 428–429. ISBN 0-03-096835-6 .
* Peter S. Cranston and Penny J. Gullan, University of California,Phylogeny of Insects, page 893.