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Il Conte Umberto I. (Biancamano) : ricerche e documenti ; parte terza ; parte quarta ed ultima (1878)
Domenico Carutti

A revision of six minor genera of Myrmicinae (Hymenoptera: Formicidae) in the Ethiopian zoogeographical region (1981)
Barry Bolton: Synopsis The ant genera Ankylomyrrna Bolton, Atopomyrmex Andre, Cyphoidris Weber, Ocymyrmex Emery, Pristomyrmex Mayr (= Odontomyrmex Andre, = Hylidris Weber, = Dodous Donisthorpe) and Terataner Emery (= Tranetera Arnold) are revised for the Ethiopian zoogeographical region. Keys and descriptions of species are presented for each genus and the genera are defined on a world-wide basis. In Atopomyrmex two species are recognized and four new infraspecific synonyms are established. Three new species are described in the previously monotypic genus Cyphoidris. Twenty-three species of Ocymyrmex are recognized of which seven are described as new; seven new synonyms are established and new Status as valid species is granted to seven previously infraspecific forms. Five Pristomyrmex species are recognized of which one is new; five new Synonyms are proposed in this genus. In Terataner the former subgenus Tranetera is newly synonymized and six species recognized, of which one is new. The six Terataner species of Madagascar are summarized, one new species is described and a key presented. The genus Baracidris is described as new, containing two new species from West and central Africa. A key to Ethiopian region myrmicine genera in which the antennal club has two Segments is given under Baracidris. Introduction This paper is presented as a contribution towards a revision of the subfamily Myrmicinae in the Ethiopian zoogeographical region. The subfamily Myrmicinae is by far the largest and most diverse in the region (and the world), containing some 43 genera in sub-Saharan Africa at present. These genera can be categorized roughly as small (1-10 species), moderate (10-40 species) and large (more than 40 species). The vast majority of Ethiopian region myrrnicine genera fall into the small category (29 genera), about nine genera come in the moderate category and only five reach the final category, of which three (Tetramorium Mayr, Pheidole Westwood and Crematogaster Lund) are huge, with well over 100 species each in the region. A good indication of distribution of genera on a world basis is given by Brown (1973), and a discussion of the most prevalent ant genera is presented by Wilson (1976). Of the seven genera discussed in this paper only Ocymyrmex, with 23 species, reaches the moderate category; the rest, Ankylomyrma (1 species), Atopomyrmex (2 species), Baracidris (2 species), Cyphoidris (4 species), Pristomyrmex (5 species) and Terataner (6 species), are all small in terms of number of species. Only two of the genera under consideration here have species which occur outside of the Ethiopian region, Terataner and Pristomyrmex; the rest are peculiar to the region. Terataner, apart from its six African species, has another six in the Malagasy region whilst Pristomyrmex species are widely distributed in the Old World tropics, reaching a peak in the Indo-Australian region.