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Species Xyloryctes thestalus

Big horned scarab - Xyloryctes thestalus - male Unknown Beetle - Xyloryctes thestalus Xyloryctes thestalus - female Female, Xyloryctes thestalus? - Xyloryctes thestalus - female Male, Xyloryctes thestalus? - Xyloryctes thestalus - male Male, Xyloryctes thestalus? - Xyloryctes thestalus - male Male, Xyloryctes thestalus? - Xyloryctes thestalus - male Male, Xyloryctes thestalus? - Xyloryctes thestalus - male
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 Dynastinae (Rhinoceros Beetles)
Tribe Oryctini
Genus Xyloryctes (Rhinoceros Beetles)
Species thestalus (Xyloryctes thestalus)
Explanation of Names
Xyloryctes thestalus Bates 1888
Size
23.5-43.0 mm(1)
Identification
has a distinctly protuberant pronotal process with an emarginate apex in the males; elytra vary from smooth to longitudinally furrowed with punctures; apex of metatibia has 7-8 small teeth; parameres with a relatively long basolateral flange(1)
Range
sw US (UT-AZ-TX) to Guatemala(1)
Life Cycle
Adults are commonly attracted to lights and to Arizona ash, Fraxinus velutina (Oleaceae)(1)
Remarks
former records of X. jamaicensis from AZ, NM, and sw. TX refer to X. thestalus(1)
at high risk of endangerment due to the EAB (2)