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Fall Fund Drive


Genus Cyclocephala - Masked Chafers

Northern Masked Chafer - Cyclocephala borealis Scarab beetle 10.06.16 - Cyclocephala borealis Scarab?  Cyclocephala? - Cyclocephala hirta Light yellow-brown beetle with black head - Cyclocephala Which species of Cyclocephala is this? - Cyclocephala Cyclocephala Cyclocephala Cyclocephala melanocephala? - Cyclocephala melanocephala
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Scarabaeoidea (Scarab, Stag and Bess Beetles)
Family Scarabaeidae (Scarab Beetles)
Subfamily Dynastinae (Rhinoceros Beetles)
Tribe Cyclocephalini
Genus Cyclocephala (Masked Chafers)
Synonyms and other taxonomic changes
Cyclocephala Dejean, 1821. Synonyms:
Aclinidia Casey, 1915
Halotosia Casey, 1915
Diapatalia Casey, 1915
Dichromina Casey, 1915
Graphalia Casey, 1915
Homochromina Casey, 1915
Isocoryna Casey, 1915
Mononidia Casey, 1915
Ochrosidia Casey, 1915
Plagiosalia Casey, 1915
Spilosota Casey, 1915
Stigmalia Casey, 1915
Aspidolites Höhne, 1922
Aspidolella Prell, 1936
Albridarollia Bolivar y Pieltain, Jiminez-Asua and Martínez 1963
Paraclinidia Martínez, 1965
Explanation of Names
From prefix cyclo meaning circular (from Greek kyklos circle, wheel) plus cephala head (Latin from Greek kephalikos, head)--Internet searches. Common name refers to the darkened area between the eyes - "mask"
Nearctica lists 21 species
Similar in general habitus to many June bugs/May Beetles (Phyllophaga), but note these characters:
(typically) pale yellow color
black head
front legs of males with a noticeably enlarged final tarsomere (5) and enlarged inner tarsal claw
clypeus somewhat rounded

See photos showing details of tarsi and clypeus:

Print references that are useful for identifying species include: (1)(2)
New world - many tropical.
Larvae are root feeders - many species are agricultural pests.
Life Cycle
Adults are nocturnal, attracted to lights.
See Also
May Beetles/June Bugs, Phyllophaga
Print References
Ratcliffe & Paulsen (2)
Harpootlian (1)
Saylor, L.W. 1945. Synoptic revision of the United States scarab beetles of the subfamily Dynastinae, No. 1: Tribe Cyclocephalini. Journal of the Washington Academy of Sciences, 35(12): 378-386.
Gordon & Anderson (key to FL species)(3)
Works Cited
1.Scarab beetles (Coleoptera: Scarabaeidae) of South Carolina
Phillip J. Harpootlian. 2001. Clemson University Public Service.
2.The Scarabaeoid Beetles of Nebraska
Brett C. Ratcliffe & M.J. Paulsen. 2008. University of Nebraska State Museum, Vol 22, 570 pp.
3.The species of Scarabaeidae (Coleoptera) associated with sugarcane in south Florida
R.D. Gordon and D.M. Anderson. 1981. The Florida Entomologist, 64 (1): 119-138 .