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Species Mallodon dasystomus - Hardwood Stump Borer

Smuckers - Mallodon dasystomus Some sort of Stag Beetle? - Mallodon dasystomus Longhorned Beetle - Mallodon dasystomus Hardwood Stump Borer - Mallodon dasystomus Not a Horned Passalus as I originally thought - Mallodon dasystomus Hardwood Stump Borer - Mallodon dasystomus big chompers - Mallodon dasystomus - male another big male - Mallodon dasystomus - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Longhorn and Leaf Beetles)
Family Cerambycidae (Longhorn Beetles)
Subfamily Prioninae
Tribe Mallodonini
Genus Mallodon
Species dasystomus (Hardwood Stump Borer)
Synonyms and other taxonomic changes
Orig. Comb: Prionus dasystomus Say, 1824
Syn: Stenodontes dasystomus (Say)
Explanation of Names
Mallodon dasystomus (Say 1823)
dasystomus = 'hairy mouth'
20-50 mm
Antennal tubercles at the base of the antennae acute; mandibles nearly horizontal, prolonged in male, more or less carinate above, most bidentate and pubescent internally.
se. US to AZ (AZ-FL-VA-OK) to Columbia - Map (1)(2)
Deciduous forests
Larvae bore in live heartwood of trees, incl. oak, elm, willow, pecan, maple, sycamore, etc.(3)
Life Cycle
take 3-4 years to mature. Can be economically damaging. Adults come to lights.

Eggs are laid around wounds, particularly near the base of the tree. The larvae bore into the heartwood, feeding gregariously.(4)
See Also
Resembles Archodontes melanopus, see discussion in(5)
Works Cited
1. A distributional checklist of the beetles (Coleoptera) of Florida.
Peck & Thomas. 1998. Florida Department of Agriculture and Consumer Services, Gainesville. 180 pp.
2.Global Biodiversity Information Facility (GBIF)
3.Illustrated Key to the Longhorned Woodboring Beetles of the Eastern United States
Steven W. Lingafelter. 2008. Coleopterists Society.
4.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.
5.Field Guide to Northeastern Longhorned Beetles (Coleoptera: Cerambycidae)
Douglas Yanega. 1996. Illinois Natural History Survey.