Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Subfamily Melolonthinae - May Beetles and June Bugs

Beetle - Serica Polyphylla decemlineata - female Beetle in dunes - Polyphylla Hypotrichia spissipes female - Hypotrichia spissipes - female Chafer? - Macrodactylus unknown scarab beetle - Dichelonyx Rose Chafer - Macrodactylus subspinosus BG2551 E1249 - Macrodactylus
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 Melolonthinae (May Beetles and June Bugs)
Other Common Names
Chafers
Explanation of Names
Authors are MacLeay, 1819, Leach in Samouelle, 1819. From Greek, Melolonthe (μηλολονθη), the "cockchafer", a group of European beetle species of this subfamily.
Numbers
White (1) lists 24 genera and about 500 species for North America.
Size
5-35 mm in North America
Identification
Medium-sized to large scarabs, usually brown or black. Some are shiny, many are bristly (setose) or scaly. Other characters (2):
tarsal claws often toothed or double
clypeus (shield-like area above mouthparts) unarmed (without teeth)
antennae with 7-10 segments, last 3-7 elongate and forming a club, sometimes fanning out (especially in males)
bases of antennae usually concealed from above
scutellum (triangular region at base of elytra) exposed
margins of elytra straight, not strongly curved
See Also
Rutelinae - Shining Leaf Chafers
Cetoniinae - Fruit and Flower Chafers
Print References
White, p. 143 (1)
Harpootlian, p. 66 (2)
Works Cited
1.Peterson Field Guides: Beetles
By Richard E. White
2.Scarab beetles (Coleoptera: Scarabaeidae) of South Carolina
By Phillip J. Harpootlian