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A revision of the subgenus Osmia (Diceratosmia), with descriptions of four new species (Hymenoptera, Megachilidae)



The eleven species of the North American subgenus Osmia (Diceratomsia) are revised, four of which are new: Osmia (Diceratosmia) exquisita, n. sp., from Honduras; Osmia (Diceratomia) gonzalezi, n. sp., and Osmia (Diceratomia) spinulifera, n. sp., from Mexico; and Osmia (Diceratomsia) lacunosa, n. sp., from the Bahamas. Diagnoses for the remaining seven species and a key to the males and females of all species are provided. We newly designate a neotype for Osmia botitena Cockerell, junior synonym of Osmia subfasciata Cresson, and remove from synonymy Osmia marilaunidii Cockerell, new status. In addition, we review the known nesting biology, floral hosts, and geographic range of each species.



Hymenoptera, Megachilinae, Osmiini, bee, taxonomy, pollen collecting, North and Central America

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Arnold, G. (1936) Emergence of the sexes from cocoons of the bee Osmia aurulenta Panz. nesting in snail‐shells at Wallasey. Proceedings of the Royal Entomological Society of London. Series A, General Entomology, 11, 45.

Ayala, R. & Griswold, T. (2005) Nueva especie de abeja del género Osmia (Hymenoptera: Megachilidae) de México. Folia Entomologica Mexicana, 44, 139–145.

Cane, J.H., Griswold, T. & Parker, F.D. (2007) Substrates and materials used for nesting by North American Osmia bees (Hymenoptera: Apiformes: Megachilidae). Annals of the Entomological Society of America, 100, 350–358.[350:SAMUFN]2.0.CO;2

Cockerell, T.D.A. (1907) Some bees in the Museum of Comparative Zoölogy, Harvard University. University of Colorado Studies, 5, 35–39.

Cockerell, T.D.A. (1909) Descriptions and records of bees.—XXI. Annals and Magazine of Natural History, Seris 8, 4, 25–31.

Cockerell, T.D.A. (1912) Descriptions and records of bees.—XLIV. Annals and Magazine of Natural History, Series 8, 9, 554–568.

Cockerell, T.D.A. (1914) Descriptions and records of bees.—LXIII. Annals and Magazine of Natural History, Seris 8, 14, 361–369.

Cresson, E.T. (1864) On the North American species of the genus Osmia. Proceedings of the Entomological Society of Philadelphia, 3, 17–38.

Cresson, E.T. (1872) Hymenoptera Texana. Transactions of the American Entomological Society, 4, 153–285.

Cresson, E.T. (1878) Descriptions of new North American Hymenoptera in the collections of the American Entomological Society. Transactions of the American Entomological Society, 7, 64–136.

Cresson, E.T. (1916) The Cresson types of Hymenoptera. Memoirs of the American Entomological Society, 1, 1–141.

Dalla Torre, C.G. de (1896) Catalogus Hymenopterorum. Vol. 10. Apidae (Anthophila). Engelmann, Leipzig, viii + 643 pp.

Erbar, C. & Leins, P. (2017) Sex and breeding behaviour of the Sicilian snail-shell bee (Rhodanthidium siculum Spinola, 1838; Apoidea–Megachilidae): preliminary results. Arthropod-Plant Interactions, 11 (3), 317–328.

Friese, H. (1925) Neue neotropische Bienenarten, zugleich II. Nachtrag zur Bienenfauna von Costa Rica (Hym.). Stettiner Entomologische Zeitung, 86, 1–41.

Genaro, J.A. (2001) Especies nuevas de abejas de Cuba y La Española (Hymenoptera: Colletidae, Megachilidae, Apidae). Revista de Biología Tropical, 49, 1027–1035.

Gess, S.K. & Gess, F.W. (2008) Patterns of usage of snail shells for nesting by wasps (Vespidae: Masarinae and Eumeninae) and bees (Megachilidae: Megachilinae) in southern Africa. Journal of Hymenoptera Research, 17, 86–109.

Gonzalez, V.H. & Griswold, T.L. (2013) Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae, Anthidiini): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnaean Society, 168, 221–425.

Harris, R.A. (1979) A glossary of surface sculpturing. Occasional Papers in Entomology, State of California Department of Food and Agriculture, 28, 1–31.

Hurd, P.D. (1979) Superfamily Apoidea. In: Krombein, K.V., Hurd, P.D., Smith, D.R. & Burks, P.D. (Eds.), Catalog of Hymenoptera in North America North of Mexico. Vol. 2. Smithsonian Institution Press, Washington, D.C., pp. 1741–2209.

Hurd, P.D. & Michener, C.D. (1955) The megachiline bees of California (Hymenoptera: Megachilidae). Bulletin of the California Insect Survery, 3, 1–248.

Krombein, K.V. (1967) Trap-nesting wasps and bees: life histories, nests and associates. Smithsonian Press, Washington, D.C., vi + 570 pp.

Linsley, E.G. (1946) Insect pollinators of alfalfa in California. Journal of Economic Entomology, 39, 18–29.

Maeta, Y. (1978) [Comparative studies on the biology of the bees of the genus Osmia of Japan, with special reference to their management for pollination of crops (Hymenoptera: Megachilidae)]. Bulletin of the Tohoku National Agricultural Experiment Station, 57, 1–221. [in Japanese with English summary]

Maeta, Y. (1980) [Appendix of the nest structure of Osmia (Chalcosmia) orientalis Benoist.] Bulletin of Iwate Insect Club, 5, 1–4. [in Japanese]

Medler, J.T. & Lussenhop, J.F. (1968) Leafcutter bees of Wisconsin (Hymenoptera: Megachilidae). Research Bulletin, College of Agricultural and Life Sciences, University of Wisconsin, 274, i + 1–80.

Michener, C.D. (1936) New Californian Osmiinae (Hymen., Megachilidae). Bulletin of the Southern California Academy of Sciences, 35, 84–93.

Michener, C.D. (1947) Bees of a limited area of southern Mississippi (Hymenoptera; Apoidea). American Midland Naturalist, 38, 443–455.

Michener, C.D. (1949) A revision of the American species of Diceratosmia (Hymenoptera, Megachilidae). Annals of the Entomological Society of America, 42, 258–264.

Michener, C.D. (2007) The Bees of the World, second edition. Johns Hopkins University Press, Baltimore, Maryland, xvi + [1] + 953 pp.

Mitchell, T.D. (1962) The bees of the eastern United States. II. Technical Bulletin (North Carolina Agricultural Research Station), 152, 1–557.

Moreno-Rueda, G., Marfil-Daza, C., Ortiz-Sánchez, F.J. & Melic, A. (2008) Weather and the use of empty gastropod shells by arthropods. Annales de la Société Entomologiqué de France, 44, 373–377.

Neff, J.L. & Simpson, B.B. (1992) Nest biology of Osmia (Diceratosmia) subfasciata Cresson in central Texas (Hymenoptera: Megachilidae). The Pan-Pacific Entomologist, 68, 15–26.

Praz, C.J., Müller, A., Danforth, B.N., Griswold, T.L., Widmer, A. & Dorn, S. (2008) Phylogeny and biogeography of bees of the tribe Osmiini (Hymenoptera: Megachilidae). Molecular Phylogenetics and Evolution, 49, 185–197.

Rau, P. (1937) The life-history of Osmia lignaria and Osmia cordata, with notes on Osmia conjuncta. Annals of the Entomological Society of America, 30, 324–343.

Rightmyer, M.G., Deyrup, M., Ascher, J.S. & Griswold, T. (2011) Osmia species (Hymenoptera, Megachilidae) from the southeastern United States with modified facial hairs: taxonomy, host plants, and conservation status. ZooKeys, 148, 257–278.

Rightmyer, M.G., Griswold, T. & Brady, S.G. (2013) Phylogeny and systematics of the bee genus Osmia (Hymenoptera: Megachilidae) with emphasis on North American Melanosmia: Subgenera, synonymies, and nesting biology revisited. Systematic Entomology, 38, 561–576.

Robertson, C. (1893) Notes on bees, with descriptions of new species. Transactions of the American Entomological Society, 20, 273–276.

Robertson, C. (1903) Synopsis of Megachilidae and Bombinae. Transactions of the American Entomological Society, 29, 163–178.

Sandhouse, G.A. (1939) The North American bees of the genus Osmia. Memoirs of the Entomological Society of Washington, 1, 1–167.

Sinha, R. (1958) A subgeneric revision of the genus Osmia in the Western Hemisphere (Hymenoptera: Megachilidae). University of Kansas Science Bulletin, 39, 211–261.

Strand, E. (1921) Apidologisches, insbesondere über paläarktische Andrena-Arten auf Grund von Material des Deutschen Entomologischen Museums. Archiv für Naturgeschichte, 87, 266–304.

Tkalců, B. (1986) Die Identität von Osmia mea Strand (Hymenoptera: Apoidea, Megachilidae). Beiträge zur Entomologie, 36, 231–232.

Webb, D.W. (1980) Primary insect types in the Illinois Natural History Survey Collection, exclusive of the Collembola and Thysanoptera. Illinois Natural History Survey Bulletin, 32, 51–191.

Westrich, P. (1996) Habitat requirements of central European bees and the problems of partial habitats. Linnean Society Symposium Series, 18, 1–16.

Zanden, G. van der (1996) Neue Arten und Synonyme bei paläarktischen Bauchsammlern (Hymenoptera aculeata, Apoidea, Megachilidae). Linzer Biologische Beiträge, 28, 883–895.



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