Sunday, July 7, 2013

Southern Masked Chafer

The Southern Masked Chafer (Cyclocephala lurida) is a kind of Rhinoceros Beetle (subfamily Dynastinae), which in turn is a kind of Scarab Beetle (family Scarabaeidae). The nocturnal adults are attracted to light, but don't worry if you see quite a few buzzing around your yard: the adults don't feed. They're more interested in finding a mate. Watch out for the larvae (white grubs), though, because in great numbers they can severely damage turfgrass as well as the roots of field crops.

You'll notice that Masked Chafers resemble June Bugs (Phyllophaga spp.), but with these differences:
  • (typically) pale yellow color
  • black head
  • front legs of males with a noticeably enlarged final tarsal segment and enlarged inner tarsal claw
  • clypeus somewhat rounded
As you can see, this specimen is missing part of his left antennae.


References:
http://bugguide.net/node/view/18809 (C. lurida)
http://bugguide.net/node/view/11449 (Cyclocephala)
http://www.fnanaturesearch.org/index.php?option=com_naturesearch&task=view&id=1301
http://www3.hcs.ohio-state.edu/turfwiki/index.php/Southern_Masked_Chafer
http://www.researchgate.net/publication/233490553_Chemically_Mediated_Sexual_Attraction_of_Male_Cyclocephala_lurida_(Coleoptera_Scarabaeidae)_and_Other_Scarabaeid_Beetles_to_Immature_Stages
https://insects.tamu.edu/fieldguide/bimg140.html
http://www.bioone.org/doi/abs/10.1603/0046-225X-30.2.425?journalCode=enve (egg predators)
http://ohioline.osu.edu/hyg-fact/2000/2505.html (fact sheet for masked chafers)
http://www.superintendentmagazine.com/article-5306.aspx (damage to golf courses)
https://www.soils.org/publications/cs/abstracts/35/6/CS0350061681?access=0&view=pdf (feeding habits)

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