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Tribe Canthonini

Vigilant Tumblebug - Canthon vigilans Dung beetle with dung - Melanocanthon nigricornis Tumblebug - Canthon Canthon pilularius?? - Canthon pilularius Canthon sp. - Canthon Scarab.. - Pseudocanthon perplexus Dark, round beetle - Pseudocanthon perplexus Canthon ?
Classification
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 Scarabaeinae (Dung Beetles)
Tribe Canthonini
Numbers
Five genera

Canthon; divided into three subgenera
Canthon (Canthon) Hoffmansegg 1817
Canthon (Boreocanthon) Halffter 1958
Canthon (Glaphyrocanthon) Martínez 1948
21 spp.

Deltochilum Eschscholtz 1822
2 spp.

Malagoniella Martínez 1961
Malagoniella astyanax yucateca (Harold 1863) recently refound in southmost Texas

Melanocanthon Halffter 1958
4 spp.

Pseudocanthon Bates 1887
Pseudocanthon perplexus (LeConte 1847)
Identification
Canthonini have the hind tibiae slender (left)


Key to the genera and subgenera of Canthonini (minus Malagoniella)

1(0) Anterior tarsi absent .................................. Deltochilum

1’ Anterior tarsi present ................................... 2


2(1) Posterior tibiae each with 2 terminal spurs ............. Melanocanthon

2’ Posterior tibiae each with single terminal spur .......... 3


3(2) Clypeus bidentate, or notched ........................... 4

3’ Clypeus quadridentate ..................................... 5


4(3) Color black, bronze, sometimes with greenish hue;
granulate; length 11-22 mm .................................... Canthon, s. str.
4' Color bright green, or purple bronze in some specimens,
never gray or black; shiny; length 2-4 mm .................... Canthon, subgenus Glaphyrocanthon
[note: the common eastern sp., C. viridis is almost always a brilliant green]

5(3) Anterior border of each posterior femur without margin;
clypeus with teeth large; granulate black; length 4-10 mm ..... Canthon, subgenus Boreocanthon
5' Anterior border of each posterior femur with margin;
clypeus with teeth small; shiny metallic; length 3-5 mm ....... Pseudocanthon
[note: this is quite similar in general habitus to Ateuchus, but the slender legs will differentiate]