J. HYM. RES. Vol. 6(2), 1997, pp. 353-418 Phylogeny of the Ammobatini and Revision of the Afrotropical Genera (Hymenoptera: Apidae: Nomadinae) CONNAL D. EaRDLEY AND DeNIS J. BROTHERS (CDE) Biosystematics Division, Plant Protection Research Institute, Private Bag X134, Pretoria, 0001 South Africa; (DJB) Department of Zoology and Entomology, University of Natal (Pietermaritzburg), Private Bag XOl, Scottsville, 3209 South Africa Abstract. — The phylogeny of the genera of Ammobatini was studied using cladistic methods and the classification is consequently revised. The tribe forms a monophyletic group that com-prises five monophyletic genera: Pasites Jurine, Sphecodopsis Bischoff, Ammohates Latreille, Mela-uewpis Saussure and Oreopasites Cockerell, and one monotypic genus Spinopasites Warncke. They all occur in the Afrotropical Region except Oreopasites, and the Afrotropical species are revised. Pasites (Morgania Smith, Omachthes Gerstaecker and Pasitoiiiachthes Bischoff, new synonymy) in-cludes 17 Afrotropical species, Sphecodopsis {Pseudopasites Bischoff and Pseudodichroa Bischoff, new synonymy) 10 species, and Ainwobates and Mclaneinpis are each known from a single Afrotropical species. Ten new species are described (all attributed to Eardley alone): Pasites iiilssoni, P. paiilyi, P. Iiumectus, P. gnomus, P. iiarnihiensis, P. somalicus, Sphecodopsis vespericena, S. longipygidnitn, S. namaquensis and Ammobates auster. Thirty-four species names are newly synonymized: Pasites nigerrimus Friese and Pasitomachthes argentatus Baker = Pasites barkeri (Cockerell); Morgania chubhi Cockerell, M. nigritula Bischoff and M. peratra Cockerell = Pasites friesei Friese; Omachthes nigripes Friese, Morgania fortis Cockerell, M. subfortis Cockerell, M. stordi/i Cockerell, M. voiensis Cockerell and M. altior Cockerell = Pasites carnifex (Gerstaecker); M. nigrithorax Strand = P. dichrous Smith; Omachthes alboguttatus Friese, Morgania nataleiisis Cockerell and M. ogilviei Cockerell = Pasites jenseui (Friese); Morgania histrio transvaalensis Bischoff, M. alivalensis Cockerell and M. rufitarsis Cockerell = Pasites histrio (Gerstaecker); Morgania marshalli Cockerell = Pasites jonesi (Cockerell); Omachthes ahessinicus Friese, Morgania fiilviventris Bischoff, M. rhodesiana Bischoff, M. apicalis Bis-choff, M. turneri Cockerell, M. politula Cockerell, M. indecisa Cockerell, M. nudicauda Cockerell, M. bechiianica Cockerell and M. breviceps Cockerell = Pasites appletoni (Cockerell); Morgania rufiila Cockerell = Sphecodopsis miniitissima (Cockerell); Pasites pygmaeus Friese, Sphecodopsis rufescens Bischoff, S. algoensis Bischoff and Morgania perpunctata Cockerell = Sphecodopsis acideata (Friese); Morgania leonis Cockerell = Sphecodopsis semirufa (Cockerell). Keys to the genera and Afrotropical species are provided. The purpose of this study is to provide edge of the identity of the Afrotropical a comprehensive revision of the system-species and the relationships between spe-atics of the Afrotropical Ammobatini (Ap-cies. idae: Nomadinae). To attain this objective. The Ammobatini are cleptoparasitic three main aspects were investigated. The bees, also known as cuckoo-bees. They lay first was to establish whether the Ammo-their eggs in the nests of pollen-collecting batini is a monophyletic taxon and, in so bees that provision each larval cell with doing, establish its validity. The second sufficient food for the larva to develop to was to review the generic classification of maturity. Like other Nomadinae, the am-the Ammobatini and gain an understand-mobatines lay each egg in a hole in the ing of the relationships among the genera, wall of the host's larval cell. When the egg The third was to acquire a sound knowl-hatches the tiny mobile first-instar larva.
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