/ y\> w u c ( The Afrotropical dacetine ants (Formicidae) Barry Bolton i LIBRARY -V Department of Entomology, British Museum (Natural History), Cromwell Road, London SW7 5BD Contents Synopsis 267 Introduction 267 Measurements and indices 271 Abbreviations of depositories 272 Diagnosis of Afrotropical dacetine ants 272 Key to Afrotropical dacetine genera (workers) 273 Smithistruma Brown 274 Key to species (workers) 276 Key to species-groups (workers) 280 Trichoscapa Emery 319 Glamyromyrmex Wheeler 320 Key to species (workers) ? 321 Serrastruma Brown 335 Key to species (workers) 337 Cladarogenys Brown 353 Epitritus Emery 354 Key to species (workers) 354 Strumigenys Smith 358 Key to species (workers) 360 Quadristruma Brown 400 Microdaceton Santschi 401 Key to species (workers) 402 Acknowledgements 403 References 403 Index 416 Synopsis The nine genera (107 species) of Afrotropical dacetine ants are revised; keys to the genera and to the species of each genus are presented. The genus-level name Miccostruma Brown is newly synonymized with Smithistruma Brown, of which 35 species are recognized and 27 are described as new. Two species formerly placed in Codiomyrmex Wheeler are transferred to Glamyromyrmex Wheeler, of which a total of 11 Afrotropical species are described. Eleven species of Serrastruma are recognised of which five are new (one is an inquiline form). Six new synonyms are proposed in this genus and one previously synonymized name is returned to specific status. Four species of Epitritus Emery and two of Microdaceton Santschi are known, and one species each of Quadristruma Brown, Cladarogenys Brown and Trichoscapa Emery, the last recorded for the first time from sub-Saharan Africa. Of the 41 recognized Afrotropical Strumigenys Smith 23 are described as new in this paper and two previously synonymized names are returned to specific status. Introduction Modern taxonomic work on the dacetine ants dates back only to Brown (1948) who published a revisionary survey of the tribe as it was then understood. This was followed by a series of papers refining the ideas of the original study by defining some of the genera more accurately and delimiting other new genera (Brown, 1949a; 19496; 1950a). During the course of these studies it was recognized that a number of genera originally placed with the dacetines did in fact constitute a separate but convergently similar tribe, the Basicerotini, which was established by Bull. Br. Mus. not. Hist. (Ent.) 46 (4): 267-416 Issued 25 August 1983
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