Proceratium is a rare genus of ants in the subfamily Proceratiinae. It is the type genus of the tribe Proceratiini, which in addition to Proceratium consists of two even rarer genera: the extant Discothyrea and the fossil genus Bradoponera.
Distribution
The genus is rare, but widespread throughout the northern temperate and tropical zones. In the Old World, it is distributed from Spain to Japan, in sub-Saharan Africa, Mauritius, the Malay Archipelago, New Guinea, Queensland (Australia) and Fiji. In the New World, it is known from Canada to Brazil (and some Caribbean islands).
Biology
Colonies are relatively small, usually containing less than 200 individuals. They nest in soil, in rotten wood, under stones, or on tree branches. Similar to its sister genus Discothyrea, some species are specialist predators of arthropod eggs, mainly spider eggs.
Species
Proceratium algiricum Forel, 1899
Proceratium angulinode Baroni Urbani & De Andrade, 2003
Proceratium arnoldi Forel, 1913
Proceratium australe Baroni Urbani & De Andrade, 2003
Proceratium austronesicum Baroni Urbani & De Andrade, 2003
Proceratium avium Brown, 1974
Proceratium banjaranense Baroni Urbani & De Andrade, 2003
Proceratium boltoni Leston, 1971
Proceratium brasiliense Borgmeier, 1959
Proceratium burundense Baroni Urbani & De Andrade, 2003
Proceratium caledonicum Baroni Urbani & De Andrade, 2003
Proceratium californicum Cook, 1953
Proceratium catio Baroni Urbani & De Andrade, 2003
Proceratium cavinodus Baroni Urbani & De Andrade, 2003
Proceratium chickasaw Baroni Urbani & De Andrade, 2003
Proceratium colombicum Baroni Urbani & De Andrade, 2003
Proceratium compitale Ward, 1988
Proceratium confinium Baroni Urbani & De Andrade, 2003
Proceratium convexiceps Borgmeier, 1957
Proceratium crassicorne Emery, 1895
Proceratium creek Baroni Urbani & De Andrade, 2003
Proceratium croceum (Roger, 1860) Proceratium cubanum Baroni Urbani & De Andrade, 2003 Proceratium dayak Baroni Urbani & De Andrade, 2003 Proceratium deelemani Perrault, 1981 †Proceratium denticulatum Lattke, 1991 Proceratium diplopyx Brown, 1980 †Proceratium dominicanum Baroni Urbani & De Andrade, 2003 Proceratium dusun Baroni Urbani & De Andrade, 2003 Proceratium ecuadoriense Baroni Urbani & De Andrade, 2003 †Proceratium eocenicum Dlussky, 2009 Proceratium foveolatum Baroni Urbani & De Andrade, 2003 Proceratium galilaeum Baroni Urbani & De Andrade, 2003 †Proceratium gibberum Baroni Urbani & De Andrade, 2003 Proceratium gigas Baroni Urbani & De Andrade, 2003 Proceratium goliath Kempf & Brown, 1968 Proceratium google Fisher, 2005 Proceratium gracile Baroni Urbani & De Andrade, 2003 Proceratium hirsutum Baroni Urbani & De Andrade, 2003 Proceratium itoi (Forel, 1918) Proceratium ivimka Baroni Urbani & De Andrade, 2003 Proceratium japonicum Santschi, 1937 Proceratium lattkei Baroni Urbani & De Andrade, 2003 Proceratium lombokense Emery, 1897 Proceratium longigaster Karavaiev, 1935 Proceratium longiscapus Baroni Urbani & De Andrade, 2003 Proceratium longmenense Xu, 2006 Proceratium lunatum Terron, 1981 Proceratium malesianum Baroni Urbani & De Andrade, 2003 Proceratium mancum Mann, 1922 Proceratium melinum (Roger, 1860) Proceratium melitense Baroni Urbani & De Andrade, 2003 Proceratium mexicanum Baroni Urbani & De Andrade, 2003 Proceratium micrommatum (Roger, 1863) Proceratium microsculptum Baroni Urbani & De Andrade, 2003 Proceratium morisitai Onoyama & Yoshimura, 2002 Proceratium nujiangense Xu, 2006 Proceratium numidicum Santschi, 1912 Proceratium oceanicum Baroni Urbani & De Andrade, 2003 Proceratium panamense Baroni Urbani & De Andrade, 2003 Proceratium papuanum Emery, 1897 Proceratium pergandei (Emery, 1895) †Proceratium petrosum Dlussky, Rasnitsyn & Perfilieva, 2015 †Proceratium poinari Baroni Urbani & De Andrade, 2003 Proceratium politum Baroni Urbani & De Andrade, 2003 Proceratium pumilio Baroni Urbani & De Andrade, 2003 Proceratium relictum Mann, 1921