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Genus Polyphylla - Lined June Beetles

Ten-lined june beetle - Polyphylla decemlineata Polyphylla crinita? - Polyphylla crinita - male Polyphylla comes ? - Polyphylla comes Polyphylla variolosa Unknown Beetle - Polyphylla Polyphylla. ? - Polyphylla decemlineata - male Polyphylla - Polyphylla decemlineata Polyphylla decemlineata
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
Superfamily Scarabaeoidea
Family Scarabaeidae (Scarab Beetles)
Subfamily Melolonthinae (May Beetles and Junebugs)
Tribe Melolonthini
Genus Polyphylla (Lined June Beetles)
Synonyms and other taxonomic changes
Macranoxia Crotch 1873, Polylamina Hardy 1974
Explanation of Names
Polyphylla Harris 1841
35 spp. in our area, ~40 in the New World (all in the nominotypical subgenus)(1)(2); 4 spp. range north into Canada(3)
25-35 mm
see (4)
Holarctic; in the New World, so. Canada to Honduras(1)(5), most species in w. NA
Forests and orchards. Some species are found in sand dunes.
Adults feed on tree foliage; larvae feed on roots of shrubs/trees
Life Cycle
Eggs are laid on soil near host plants; larvae reach maturity in 2-3 years and pupate in underground chambers
P. crinita larvae have been collected from beneath nests of harvester ants (Pogonomyrmex occidentalis).
P. decemlineata larvae are collected from a variety of crops.
P. variolosa are known to damage roots of trees such as California privet.
P. occidentalis have been collected from the roots of sedges.
Adults come to lights
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