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

Genus Anomala

dark green-reflexed scarab - Anomala Anomala orientalis - Oriental Beetle? - Anomala orientalis Anomala marginata Anomala innuba Anomala undulata Friendly bug on eggplant leaf - Anomala shining leaf chafer - Anomala marginata Oriental Beetle  - Anomala orientalis
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 Rutelinae (Shining Leaf Chafers)
Tribe Anomalini
Genus Anomala
Synonyms and other taxonomic changes
Anomala Samouelle, 1819
=Phyllopertha Stephens, 1830
=Spilota Burmeister, 1844
=Callistethus Blanchard, 1851 [used for marginata by Ratcliffe & Paulsen (1)]
=Pachystethus Blanchard, 1851 [was used in much of the older NA literature for A. marginata, lucicola & oblivia]
=Blitopertha Reitter, 1903
=Cyriopertha Reitter, 1903
=Exomala Reitter, 1903 [often seen used for A. orientalis]
=Megapertha Reitter, 1903
=Pleopertha Reitter, 1903
=Trichopertha Reitter, 1903
=Apleopertha Semenov, 1903
=Anomalepta Casey, 1915
=Anomalopus Casey, 1915
=Hemispilota Casey, 1915
=Oliganomala Casey, 1915
=Paranomala Casey, 1915
=Rhombonalia Casey, 1915
=Anomalopides Strand, 1928
Explanation of Names
Author is Samouelle, 1819. Anomala is Latin, meaning "irregular or deviating from normal" (Internet searches).
Numbers
Nearctica.com lists 41 species for North America.
Worldwide, this is one of the largest genera in the animal kingdom, with over 1,000 described species (180 in New World), though the genus is in need of revision (Generic Guide to New World Scarabs).
Size
6-12 mm
Identification
Some characteristics of the genus:
small to medium-sized, slightly oval-shaped, convex in cross-section
antennae with 9 segments
pronotum not pubescent (hairy)
elytra with shallow striations and puntures, rather translucent (membranous) along sides

Species identification
Anomala spp. Mesosternum detail;
Mesosternum between mesocoxae concave to flat anteriorly, not elevated posteriorly to more than low umbo ......... top, most spp.
Mesocoxae separated by distinctly convex to prominently raised mesosternal process, sometimes porrect ...... bottom, includes spp. such as A. marginata, lucicola & oblivia [These were placed in the genus Pachystethus in much of the older American literature and Callistethus was used in combination with marginata in Ratcliffe & Paulsen (1)]
Print References
Dillon, pp. 542-544, plate 53 (2)
Harpootlian, pp. 97-101 (3)
Ratcliffe & Paulsen (1)
Internet References
Insects of Cedar Creek--illustrates A. binotata and an undetermined species.
North Carolina State University Entomology has 12 species listed with specimens from that state.
Works Cited
1.The Scarabaeoid Beetles of Nebraska
By Brett C. Ratcliffe & M.J. Paulsen
2.A Manual of Common Beetles of Eastern North America
By Dillon, Elizabeth S., and Dillon, Lawrence
3.Scarab beetles (Coleoptera: Scarabaeidae) of South Carolina
By Phillip J. Harpootlian