Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Information, insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


Species Gymnetis thula - Harlequin Flower Beetle

Gymnetis caseyi - Gymnetis thula I believe this is the Harlequin Flower Beetle..... - Gymnetis thula Gymnetis at the diner, side view - Gymnetis thula Scarab - Gymnetis thula Black and Yellow - Gymnetis thula Gymnetis caseyi - Harlequin Flower Beetle? - Gymnetis thula Beetle - Gymnetis thula Unknown beetle - Gymnetis thula
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 Cetoniinae (Fruit and Flower Chafers)
Tribe Gymnetini
Genus Gymnetis
Species thula (Harlequin Flower Beetle)
Synonyms and other taxonomic changes
misidentified as: G. sallei and G. flavomarginata, these names correctly apply to species from southern Mexico and S. Amer. respectively.
unavailable: Gymnetis caseyi Antoine, 2001, see Ratcliffe (2018) for discussion (1)
Explanation of Names
Gymnetis thula Ratcliffe, 2018
thula (L). 'the furthest north" (1)
Ratcliffe (2018) determined 56 spp. within Gymnetis, but only G. thula reaches the U.S. (1)
16-21 mm (1)
mostly of the interior of TX to the Rio Grande - Map) with limited records in LA and FL / Tamps & SLP, Mex. (1)(2)(3)(4), plus Ocean Springs, Miss. (5)
all months, but mostly April-July (1)
Life Cycle
Adults have been taken feeding on ripe fruit, in syrup and fruit traps, and occasionally at lights. Also at sap flows on false willow, Baccharis neglecta. (1)
Ritcher (1966) reported three third instar larvae collected December 31, 1919, at Blue Mott, Victoria Co., TX in rotten moss in a hollow anacua (Ehretia anacua) tree. (6)
Sundberg (pers. comm. to BCR, 2017) reports larvae in tree holes of living mesquite, post oak, and several other trees. (1)
Gymnetis sallei Schaum has been reported from AZ, but Ratcliffe (2018) found no spmns to confirm this. (1)
Print References
Antoine, P. 2001. Contribution a la connaissance des Gymnetini (Coleoptera, Cetoniidae). Coléoptères 7: 113-136.
Ratcliffe, B.C. 2018. A monographic revision of the genus Gymnetis MacLeay, 1819 (Coleoptera: Scarabaeidae: Cetoniinae). Bulletin of the University of Nebraska State Museum 31: 1-250. (1)
Internet References
Texas Entomology - Mike Quinn, 2018
Works Cited
1.A monographic revision of the genus Gymnetis MacLeay, 1819 (Coleoptera: Scarabaeidae: Cetoniinae).
Ratcliffe, B.C. 2018. Bulletin of the University of Nebraska State Museum 31: 1-250.
2.An annotated checklist of the Scarabaeoidea of Texas.
Edward G. Riley & Charles S. Wolfe. 2003. Southwestern Entomologist, Supplement. 37 pp.
3. A distributional checklist of the beetles (Coleoptera) of Florida.
Peck & Thomas. 1998. Florida Department of Agriculture and Consumer Services, Gainesville. 180 pp.
4.Global Biodiversity Information Facility (GBIF)
6.White Grubs and Their Allies, a Study of North American Scarabaeoid Larvae
Paul O. Ritcher. 1966. Oregon State University Press, Corvallis. 219 pp.