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The geographical distribution of all species of the genus is completed through the study of new material present in various collections (932 specimens). Distribution maps are presented and a summary of ecological data is provided based on label informations, mainly collecting methods and altitudes. The genus is found for the first time from Belize, with D. penatii and D. pusillus. D. hielkemai is probably the species with the largest distribution. C. barberoi, C. bihamatus and D. yvesi show disjunct distributions but probably not for the same reasons. As most species were found under 500 m of altitude, D. diquis, D. pseudohamatus and D. yvesi were collected mainly between 1000 and 2000 m. D. lewisi in Bolivia and D. peruvianus in Peru were collected mainly higher than 2000 m. As most specimens were trapped by FIT, eight species were collected sifting forest litters, and D. antoinei and D. hielkemai were also found through canopy fogging. D. antoinei, D. hielkemai and D. striatus were occasionally found in refuse piles of army ants or leafcutter ants., La distribution géographique des espèces est précisée grâce à l'étude d'un nouveau matériel issu de diverses collections. Des cartes de distribution sont présentées et une synthèse des données écologiques est fournie d'après les renseignements présents sur les étiquettes.

Chaetabraeus (s. str.) tuberculatus n. sp. and C. (s. str.) francoisi n. sp. are very distinctive species described as new from South Africa. They are the only Chaetabraeus species which have a tubercle in each anterior pronotal angle. With Chaetabraeus (s. str.) johnstoni n. sp., they are the first histerid beetles collected in hyrax (Procavia capensis) dens. A synthesis of ecological data about the Chaetabraeus (s. str.) species is presented., Chaetabraeus (s. str.) tuberculatus n. sp. et C. (s. str.) francoisi n. sp. sont deux espèces très particulières décrites d'Afrique du Sud. Ces deux espèces sont les seuls Chaetabraeus (s. str.) connus possèdant un tubercule à chaque angle antérieur de leur pronotum. Avec Chaetabraeus (s. str.) johnstoni n. sp., ce sont les premiers Histeridae signalés des latrines du Daman des rochers (Procavia capensis). Des données écologiques concernant les espèces du genre Chaetabraeus (s. str.) sont rassemblées.

Margarinotus felipae (Lewis) Distribution. Throughout the central United States. New Arkansas Records. Cleburne Co.: Heber Springs, jct. SR-25 & SR-5; 14-27.IV.2008 (8); pitfall. Scott Co.: ~ 2 km E of Mansfield, 0.5km S. on Harp Rd.; 5.IV.2009 (4); burrow excavation. Published Arkansas Records. None. Published Records. Iowa City, Johnson County, Iowa is the type locality (Lewis 1901). Remarks. Margarinotus felipae was described from Iowa City, Iowa with no other habitat associations noted (Lewis 1901). There is not enough habitat data known about M. felipae to determine its affinity with pocket gopher burrows., Published as part of Connior, Matthew B., Kovarik, Peter W., Iii, Stephen Chordas, Robison, Henry W. & Skelley, Paul E., 2014, Coleoptera (Histeridae, Leiodidae and Scarabaeidae) inhabiting the burrows of Baird's pocket gopher (Rodentia: Geomyidae: Geomys breviceps) in Arkansas, pp. 1-27 in Insecta Mundi 2014 (389) on pages 4-5, DOI: 10.5281/zenodo.5179638, {"references":["Lewis, G. 1901. On new species of Histeridae. Annnals of the Magazine of Natural History (7) 8: 366 - 383."]}

Geomysaprinus rugosifrons (Fall) Distribution. Found throughout the central United States and Canada (Fig. 5). New Arkansas Records. Calhoun Co.: 2 km W Harrell, 7-8.III.2009 (2); pitfall. Columbia Co.: Magnolia; 28.X.2010 (1); burrow excavation. Hot Spring Co.: Malvern, 1 km S jct. US-67 and SR-171; 13-16.IV.2012 (7); pitfall. Jefferson Co.: Pine Bluff, Prison; 10-16.IV.2010 (2); pitfall. Lafayette Co.: Bradley, 0.5 km W jct. AR St Hwy 160 and Co. Rd. 9; 15-25.IV.2012 (23); pitfall. Miller Co.: Fouke; Jct. AR St Hwy 71 and Co. Rd. 24. 15-25.IV.2012 (5); pitfall. Saline Co.: vic. East End, Jct N Sardis Rd. and Wilson St.; 5-IV-4.V.2013 (1); pitfall. Published Arkansas Records. None. Published Records. (Fall 1919). CANADA: Manitoba. UNITED STATES: Illinois: Cook Co. Remarks. The species was described from pocket gopher burrows in Aweme, Manitoba, Canada (Fall 1919). Wenzel (1944) reported the collection of G. rugosifrons “at large” from Cook Co., IL, where pocket gophers do not occur. Blume and Summerlin (1988) collected six specimens of Geomysaprinus resembling rugosifrons from Brazos Co., Texas, the only reported collection of this apparently undescribed species., Published as part of Connior, Matthew B., Kovarik, Peter W., Iii, Stephen Chordas, Robison, Henry W. & Skelley, Paul E., 2014, Coleoptera (Histeridae, Leiodidae and Scarabaeidae) inhabiting the burrows of Baird's pocket gopher (Rodentia: Geomyidae: Geomys breviceps) in Arkansas, pp. 1-27 in Insecta Mundi 2014 (389) on page 4, DOI: 10.5281/zenodo.5179638, {"references":["Fall, H. C. 1919. New Coleoptera. VIII. Canadian Entomologist 51: 212 - 216.","Wenzel, R. L. 1944. On the classification of the histerid beetles. Publications of the Field Museum of Zoology Series 28: 51 - 151.","Blume, R. B., and J. W. Summerlin. 1988. Histeridae (Coleoptera) from pocket gopher burrows (Geomyidae) in East Central Texas. The Coleopterists Bulletin 42: 202 - 204."]}

Catops geomysi Peck and Skelley Distribution. Restricted to the southern United States (Fig. 8). New Arkansas Records. Scott Co.: ~ 2 km E of Mansfield, 0.5km S. on Harp Rd.; 5.IV.2009 (1); burrow excavation. Sevier Co.: Gilham, 1 km W jct. US-71 and Mineral Rd.; 7.IV-23.V.2012 (7); pitfall. White Co.: ~ 2 km W of Center Hill; Junc. AR 36/ Tater Hill Rd.; 25.IV.2009 (1); burrow excavation. Published Arkansas Records. None. Published Records. (Peck and Skelley 2001). ALABAMA: Coffee Co. FLORIDA: Alachua, Flagler, Gilchrist, Highlands and Leon Cos. GEORGIA: Dodge, Richmond, Schreven and Thomas Cos. MISSISSIPPI: Oktibbeha Co. OKLAHOMA: Latimer Co. TEXAS. Brazos and Tyler Cos. Remarks. This species has been collected either in flight traps, carrion baits or burrows of pocket gophers (Peck 2001). The species was named based on its association with pocket gophers., Published as part of Connior, Matthew B., Kovarik, Peter W., Iii, Stephen Chordas, Robison, Henry W. & Skelley, Paul E., 2014, Coleoptera (Histeridae, Leiodidae and Scarabaeidae) inhabiting the burrows of Baird's pocket gopher (Rodentia: Geomyidae: Geomys breviceps) in Arkansas, pp. 1-27 in Insecta Mundi 2014 (389) on page 6, DOI: 10.5281/zenodo.5179638, {"references":["Peck, S. B., and P. E. Skelley. 2001. Small carrion beetles (Coleoptera: Leiodidae: Cholevinae) from burrows of Geomys and Thomomys pocket gophers (Rodentia: Geomyidae) in the United States. Insecta Mundi 15: 139 - 150."]}

Connior, Matthew B., Kovarik, Peter W., Iii, Stephen Chordas, Robison, Henry W., Skelley, Paul E. (2014): Coleoptera (Histeridae, Leiodidae and Scarabaeidae) inhabiting the burrows of Baird's pocket gopher (Rodentia: Geomyidae: Geomys breviceps) in Arkansas. Insecta Mundi 2014 (389): 1-27, DOI: http://doi.org/10.5281/zenodo.5179638, {"references":["Blume, R. B., and J. W. Summerlin. 1988. Histeridae (Coleoptera) from pocket gopher burrows (Geomyidae) in East Central Texas. The Coleopterists Bulletin 42: 202-204.","Casey, T. L. 1916. Memoirs on the Coleoptera, vii. New Era Printing Company, Lancaster, PA.","Caterino, M. S. 1998. A phylogenetic revision of Spilodiscus Lewis (Coleoptera: Histeridae). Journal of Natural History 32: 1129-1168.","Connior, M. B. 2010a. Annotated checklist of the recent wild mammals of Arkansas. Occasional Papers, Museum of Texas Tech 293: 1-12.","Connior, M. B. 2010b. Nestlings of Baird's pocket gopher, Geomys breviceps (Rodentia: Geomyidae) in Arkansas. Texas Journal of Science 62: 59-62.","Connior, M. B. 2011a. Histeridae and Scarabaeidae from unsampled populations of pocket gopher burrows in Louisiana. Insecta Mundi 153: 1-5.","Connior, M. B. 2011b. Geomys bursarius. Mammalian Species 43 (879): 104-117.","Connior, M. B, A. A. Kershen, R. E. Medlin, D. E. Elrod, D. B. Sasse, and T. S. Risch. 2010. Distribution and habitat affinities of an endemic pocket gopher. American Midland Naturalist 164: 217-229.","Connior, M. B, and C. T. McAllister. 2013. Coleoptera (Histeridae and Scarabaeidae) from Baird's pocket gopher (Geomys breviceps) burrows from Southeastern Oklahoma. Proceedings of the Oklahoma Academy of Science 93:19-22.","Fall, H. C. 1919. New Coleoptera. VIII. Canadian Entomologist 51: 212-216.","Fiene, J. G., M. B. Connior, R. Androw, B. Baldwin, and T. McKay. 2011. Surveys of Arkansas dung beetles (Coleoptera: Scarabaeidae and Geotrupidae): phenologies, mass occurrences, state and distributional records. American Midland Naturalist 165: 319-337.","Godwin, W. B. 2000. Second record of Euphoria aestuosa Horn 1880 reared from dung chambers of Geomys breviceps Baird. Southwestern Entomologist 25: 145-147.","Gordon, R. D., and P. E. Skelley. 2007. A monograph of the Aphodiini inhabiting the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae). Memoirs of the American Entomological Institute 79: 1-580.","Helava, J. 1978. A revision of the Neartic species of the Genus Onthophilus Leach (Coleoptera: Histeridae). Contributions of the American Entomological Institute 15: 1-43.","Kovarik, P., S. Chordas III, H. Robison, P. Skelley, M. Connior, J. Fiene, and G. Heidt. 2008. Insects inhabiting the burrows of the Ozark pocket gopher in Arkansas. Journal of the Arkansas Academy of Science 62: 75-78.","Kriska, N. L., and K. Katovich. 2005. Scarab beetles (Coleoptera: Scarabaeidae) associated with pocket gophers in Wisconsin. The Great Lakes Entomologist 38: 42-50.","Lewis, G. 1901. On new species of Histeridae. Annnals of the Magazine of Natural History (7) 8: 366-383.","Orozco, J. 2012. Monographic revision of the American Genus Euphoria Burmeister, 1842 (Coleoptera: Scarabaeidae: Cetoniinae). The Coleopterists Bulletin 11: 1-182.","Peck S. B. 1973. A systematic revision and the evolutionary biology of Ptomaphagus (Adelops) beetles of North America (Coleoptera; Leiodidae; Catopinae), with emphasis on cave-inhabiting species. Bulletin of the Museum of Comparative Zoology (Harvard) 145: 29-162.","Peck, S. B. 2001. 19. Leiodidae Fleming, 1821. p. 250-258. In: R. H. Arnett, Jr., and M. C. Thomas (eds.). American beetles, Volume 1. CRC Press; Boca Raton, FL. ix-443 p.","Peck, S. B., and P. E. Skelley. 2001. Small carrion beetles (Coleoptera: Leiodidae: Cholevinae) from burrows of Geomys and Thomomys pocket gophers (Rodentia: Geomyidae) in the United States. Insecta Mundi 15: 139-150.","Ratcliffe, B. C., and M. J. Paulsen. 2008. The Scarabaeoid beetles of Nebraska (Coleoptera: Scarabaeoidea). Bulletin of the University of Nebraska State Museum 22: 1-570.","Ross, E. S. 1940. New Histeridae (Coleoptera) from the burrows of the Florida pocket gopher. Annals of the Entomological Society of American 33: 1-9.","Ross, E. S. 1944a. Arthropod collecting in the burrows of a Texas pocket-gopher. Entomological News 55: 57-61.","Ross, E. S. 1944b. Onthophilus kirni new species, and two other noteworthy Histeridae from burrows of a Texas pocket-gopher. Entomological News 55: 115-118.","Skelley, P. E., and R. D. Gordon. 2001. Scarab beetles from pocket gopher burrows in the southeastern United States (Coleoptera: Scarabaeidae). Insecta Mundi 15: 77-93.","Skelley, P. E., and P. W. Kovarik. 2001. Insect surveys in the Southeast: investigating relictual entomofaunas. Florida Entomologist 84: 552-555.","Sulentich, J. M., L. R. Williams, and G. N. Cameron. 1991. Geomys breviceps. Mammalian Species 383: 1-4.","Tishechkin, A. K., and A. R. Cline. 2008. The beetle (Coleoptera) fauna of pocket gopher burrows in Louisiana. Proceedings of the Entomological Society of Washington 110: 331-339.","Wenzel, R. L. 1944. On the classification of the histerid beetles. Publications of the Field Museum of Zoology Series 28: 51-151.","Worthington, R. J., and K. J. Larsen. 2010. An annotated checklist of scarab beetles (Coleoptera: Scarabaeidae) from northeastern Iowa. The Great Lakes Entomologist 43: 77-90."]}