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Genus Trigonarthris

Cerambycid - elytra brown with black tips - Trigonarthris Flower Longhorn Beetle - Trigonarthris minnesotana Trigonarthris proxima? - Trigonarthris minnesotana Longhorn Beetle - Trigonarthris Trigonarthris atrata (LeConte) - Trigonarthris atrata Trigonarthris - female Coleoptera. Cerambycidae. Trigonarthris? - Trigonarthris Trigonarthris proxima or T. minnesotana? - Trigonarthris minnesotana - male - female
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)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Cerambycidae (Long-horned Beetles)
Subfamily Lepturinae (Flower Longhorns)
Tribe Lepturini
Genus Trigonarthris
Explanation of Names
Trigonarthris Haldeman 1847
Greek trigon 'triangular' + arthron 'joint'
3 spp. total, all in our area(1)
13-20 mm
e. NA (T. atrata in se. US to KS-TX, other spp. more widespread)(1)
Deciduous and mixed forests
mostly: May-Jul (BG data)
Adults take nectar and/or pollen at flowers.
Life Cycle
Larvae live in decomposing hardwoods, perhaps pine.