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For Insects, Spiders & Their Kin
For the United States & Canada

Genus Phanaeus - Rainbow Scarabs

Rainbow Scarab (Male) - Phanaeus vindex - male Rainbow Scarab - Phanaeus vindex - male Rainbow Scarab - Phanaeus vindex Phanaeus - Phanaeus vindex - female Rainbow scarab - Phanaeus vindex - male Phanaeus quadridens  - Phanaeus quadridens - male Rainbow Scarab - Phanaeus vindex - male Phanaeus triangularis texanus? - Phanaeus triangularis - male
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 Scarabaeinae (Dung Beetles)
Genus Phanaeus (Rainbow Scarabs)
Synonyms and other taxonomic changes
Lonchophorus Germar 1824
Onthurgus Gistel 1857
Palaeocopris Pierce 1946
Explanation of Names
Author is William Sharp Macleay. According to Blatchley, p. 917 (1) (direct link), Phanaeus is Greek, meaning light bearer.
Numbers
Genus Phanaeus MacLeay 1819

Phanaeus adonis Harold 1863 - Mexico; coastal Cameron County, Texas
Phanaeus amithaon Harold 1875 - Mexico, south central Arizona @ low to mid elevations
Phanaeus difformis LeConte 1847 – southern midwestern US
=Phanaeus magnificens Robinson 1948
Phanaeus igneus MacLeay 1919 - southeastern US
=Phanaeus floridanus D’Olsoufieff 1924
Phanaeus quadridens (Say 1835) - Mexico, southeastern Arizona, New Mexico @ mid-elevations
=Phanaeus violaceus Laporte 1840
=Phanaeus laevipennis Sturm 1843
=Phanaeus borealis D’Olsoufieff 1924
Phanaeus triangularis triangularis (Say 1823) – southeastern US to Texas
=Phanaeus torrens LeConte 1847
=Phanaeus niger D’Olsoufieff 1924
=Phanaeus goidanichi Balthasar 1939
Phanaeus vindex MacLeay 1819 - Mexico; Eastern US, west to Wyoming and Arizona
=Phanaeus cyanellus Robinson 1938
=Phanaeus rubervirens Robinson 1948
=Phanaeus carnifex auct., not Linnaeus

Nearctica.com lists 10 species in the genus for North America - outdated.
Identification
Large, robust, colorful scarabs. Males often have a prominent horns.
Life Cycle
Adults of P. vindex excavate a cavity and form a dung ball underneath a dung mass, as opposed to rolling it away, as do other scarabs. (See Univ. of Nebraska page.) Eggs are laid on this dung ball.
Remarks
NCSU Entomology collection lists the following species for the state of North Carolina, with number pinned: carnifex (14), igneus (24), triangularis (1), vindex (65).
Print References
Blatchley, p. 917 (1)
Edmonds (2)
Dillon (3)
White, P. vindex, plate 7 (4)
Papp (5)
Arnett (6)
Harpootlian, pp. 18-20, gives a key and illustrates all South Carolina species, which include triangularis, vindex, and igneus. (7)
Internet References
Univ. of Nebraska page discusses scarab life history, including Phanaeus.
Univ. Wisconsin page showing a species of Phanaeus