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Genus Trichiotinus

Scarab mimics bumble bee - Trichiotinus affinis Flower Chafer Beetle? - Trichiotinus lunulatus Trichiotinus sp. - Trichiotinus affinis Trichiotinus affinis Unknown beetle - Trichiotinus lunulatus hairy flower beetle? - Trichiotinus affinis Bee-like Flower Scarabs - Genus Trichiotinus? - Trichiotinus piger Trichiotinus texanus ? - Trichiotinus texanus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
Superfamily Scarabaeoidea
Family Scarabaeidae (Scarab Beetles)
Subfamily Cetoniinae (Fruit and Flower Chafers)
Tribe Trichiini
Genus Trichiotinus
Other Common Names
Hairy Flower Scarabs
Synonyms and other taxonomic changes
Trichiotinus Casey 1915
Numbers
8 spp., all in our area(1)
Size
7‒12 mm
Identification
keys to spp. in (2)(3) ▪ se. spp. in (4)
Species identification from photos difficult.
Two informal groups:
Pronotum brown/black, elytra brown/black, white stripes on sides: assimilis —mostly northern & western; affinis —similar to piger but elytral intervals 2 & 4 shiny, with scattered large punctures, look same as slightly elevated and convex intervals 3 & 5, pygidium distinctly and closely rugose; piger —like affinis but intervals 2 & 4 finely and densely punctate, less shiny than distinctly elevated intervals 3 & 5; pygidium medially distinctly setose, noncretaceous surface with irregular rugae usually separated by ≤0.2 mm in median area; rufobrunneus —very brown, FL endemic; texanus TBA
Pronotum green, elytra brown to green, with no distinct white bars: bibens —elytra brown with green tinge, flies in mid-late summer; lunulatus —elytra brighter green than in bibens, flies in late spring and early summer [overlooked in(5)]; viridans TBA
Range
NA (all but one sp. east of the Rockies)(3)
Habitat
Larvae in rotting wood, adults visit flowers
Season
Apr‒Aug
Print References
(6)
Works Cited
1.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
2.The biology and taxonomy of the genus Trichiotinus (Scarabaeidae-Coleoptera)
Hoffman C. 1935. Entomologica Americana 15: 134‒209.
3.A review of the Trichiinae of North and Central America (Coleoptera: Scarabaeidae)
Henry F. Howden. 1968. The Memoirs of the Entomological Society of Canada, Volume 100, Supplement S54 , pp. 5 - 77 .
4.Scarab beetles (Coleoptera: Scarabaeidae) of South Carolina
Phillip J. Harpootlian. 2001. Clemson University Public Service.
5.The Beetles of Northeastern North America, Vol. 1 and 2.
Downie, N.M., and R.H. Arnett. 1996. The Sandhill Crane Press, Gainesville, FL.
6.Phylogenetic Analysis of the North American Beetle Genus Trichiotinus (Coleoptera: Scarabaeidae: Trichiinae)
T. Keith Philips, Jesus Orozco, Mark Callahan, Naomi Rowland. 2016. Psyche A Journal of Entomology (4):1-9.