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Subfamily Prioninae

Smuckers - Mallodon dasystomus Big Beetle - Prionus fissicornis Root borer larva, ventral - Prionus laticollis Big beetle: Trichocnemis, formerly Ergates? - Derobrachus thomasi Broad-necked Root Borer (Prionus laticollis) - Prionus laticollis Broad-necked Root Borer? - Prionus laticollis Longhorn Beetle - Orthosoma brunneum Hardwood Stump Borer - Mallodon dasystomus
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 Chrysomeloidea (Long-horned and Leaf Beetles)
Family Cerambycidae (Long-horned Beetles)
Subfamily Prioninae
Numbers
37 spp. in 13 genera of 5 tribes in our area; >350 spp. in ~100 genera of 9 tribes in the New World(1)
Size
our spp. 25-70 mm; world's largest beetles are members of this subfamily
Identification
Large, robust, usually brown to black; antennae long, prominent, sometimes flattened. Often sexually dimorphic; males having large, strong jaws (presumably used in intraspecific fights).(2)
Revisions/keys:(3)(4)
Range
by far more diverse in the tropics (in our area, in so. US) but a few spp. range far north(1)
Habitat
Larvae usually in rotting wood, often wood in contact with soil (roots/stumps)
Remarks
adults nocturnal, come to lights; tree-associated species often have gregarious larvae(2)