Abstract
A new species, Hexantheda entrerriana, from the province of Entre Ríos, Argentina, is described. These bees have an unusual labial palp with eight segments. Features distinguishing the new species from the other two species of the genus are presented.References
Brothers, D.J. (1975) Phylogeny and classification of the aculeate Hymenoptera, with special reference to Mutillidae. University of Kansas Science Bulletin, 50, 483–648.
Brothers, D.J. (1976) Modifications of the metapostnotum and origin of the “propodeal triangle” in Hymenoptera Aculeata. Systematic Entomology, 1, 177–182.
Brothers, D.J. & Carpenter, J.M. (1993) Phylogeny of Aculeata: Chrysidoidea and Vespoidea (Hymenoptera). Journal of Hymenoptera Research, 2, 227–304.
Matsuda, R. (1965) The morphology and evolution of the insect head. Memoirs of the American Entomological Institute, 4, 1–334.
Michener, C.D. (1944) Comparative external morphology, phylogeny, and a classification of the bees. Bulletin of the American Museum of Natural History, 82, 151–326.
Michener, C.D. (1965) A classification of the bees of the Australian and South Pacific regions. Bulletin of the American Museum of Natural History, 130, 1–362
Michener, C.D. (1989) Classification of the American Colletinae. University of Kansas Science Bulletin, 53, 622–703.
Michener, C.D. (2000) The Bees of the World. The John Hopkins University Press, Baltimore and London, xiv+913 pp.
Moure, J.S., Graf, V. & Urban, D. (1999) Catálogo de Apoidea da Regino Neotropical (Hymenoptera, Colletidae). I. Paracolletini. Revista brasileira de Zoologia, 16 (supl.1), 1–46.
Ogloblin, A. (1948) Descripción de dos géneros nuevos de Paracolletini argentinos (Colletidae, Apoidea, Hymenoptera). Notas del Museo de La Plata, Zool., 13, 165–177, lám. I–IV.
Silveira, F.A., Melo, G.A.R. & Almeida, E.A.B. (2002) Abelhas brasileiras. Sistemática e identificaçno. Belo Horizonte, 253 pp.
Snodgrass, R.E. (1935) Principles of insect morphology. McGraw-Hill Book Co., New York, 667 pp.
Stehmann, J.R. & Semir, J. (2001) Biologia reprodutiva de Calibrachoa elegans (Miers) Stehmann & Semir (Solanaceae). Revista brasileira de Botanica, 24, 43–49.
Urban, D. & Graf, V. (2000) Albinapis gracilis gen. n. e sp. n. e Hexantheda enneomera sp. n. do Sul do Brasil (Hymenoptera, Colletidae, Paracolletini). Revista brasileira de Zoologia, 17, 595–601.