Proceratium stictum clade

Staab, Michael, Garcia, Francisco Hita, Liu, Cong, Xu, Zheng-Hui & Economo, Evan P., 2018, Systematics of the ant genus Proceratium Roger (Hymenoptera, Formicidae, Proceratiinae) in China - with descriptions of three new species based on micro-CT enhanced next-generation-morphology, ZooKeys 770, pp. 137-192 : 137

Proceratium stictum clade

Definition.

Worker of this clade can be separated from all other Proceratium by the combination of calcar of strigil with a basal spine and clypeus distinctly and broadly notched (definition follows Baroni Urbani and de Andrade 2003).

Comments.

This is an exclusively tropical clade with species occurring in Africa, Australia, Madagascar, the Mascarene Islands, Mesoamerica, and tropical southeast Asia. Eleven extant species are known, of which P. deelemani Perrault, 1981, P. foveolatum Baroni Urbani & de Andrade, 2003, P. stictum Brown, 1958, and the newly described P. shohei are known from the oriental zoogeographic region. Proceratium shohei is the only species known from China.