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BugGuide Gathering
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July 10-12, 2009
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Subfamily Cetoniinae - Fruit and Flower Chafers

Delta Flower Scarab - Trigonopeltastes delta Trichiotinus assimilis Flower beetle needs ID - Trigonopeltastes delta ant/termite cohabitant scarab - Valgus seticollis Valgus pupa - Valgus seticollis Dark Flower Scarab - Euphoria sepulcralis Some sort of Beetles - Trichiotinus Green June Beetle, Cotinis nitida - Cotinis nitida
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles)
Superfamily Scarabaeoidea (Scarab, Stag and Bess Beetles)
Family Scarabaeidae (Scarab Beetles)
Subfamily Cetoniinae (Fruit and Flower Chafers)
Other Common Names
Flower Beetles
Explanation of Names
Author is Leach, 1815, the subfamily named for Old World genus Cetonia (e.g., Cetonia aurata). Origin of name is obscure--The Century Dictionary (1) does not list an etymology. One Internet source says that ceton is Gaulish for woods, forest. Ceton (or Seton) is a surname as well, so perhaps this is an eponym. Or perhaps there is a connection with Latinized Greek cetus, whale. (Editorial note: OED needs to be checked.)
Identification
Characteristics (2), (3), (Generic Guide to New World Scarabs--key)
body shape usually somewhat flattened
none have horns
Antennal insertion is visible from above--clypeus with sides constricted in the middle, just in front of the eyes
mandibles and labrum hidden by clypeus
pygidium exposed
tarsal claws simple (not forked), and more-or-less equal in size
Food
Many found on flowers, where feed on pollen.
Life Cycle
Larvae feed on roots, organic material in soil, or decaying wood in trees. Some are associated with ant nests (myrmecophiles), and adults may be found there as well.
See Also
Rutelinae - Shining Leaf Chafers
Melolonthinae - May Beetles and June Bugs
Print References
The Century Dictionary--entry for Cetonia (1)
Harpootlian, p. 115 (2)
White (1983), p. 147 (3)
Internet References