Euceraia acreana (Piza, 1973) Piza, 1973

Chamorro-Rengifo, Juliana & Braun, Holger, 2010, The Tettigoniidae (Orthoptera) described by Salvador de Toledo Piza Jr. and deposited in the collection of the University of São Paulo, Escola Superior de Agricultura " Luiz de Queiroz ", Brazil, Zootaxa 2635, pp. 41-66 : 55

Euceraia acreana (Piza, 1973) comb. nov.

Zenirella acreana Piza, 1973

Ferreiraia nigropunctata Piza, 1976 syn. nov.

Zenirella Piza, 1973 syn. nov. of Euceraia Hebard, 1927

Ferreiraia Piza, 1976 syn. nov. of Euceraia Hebard, 1927

Zenirella acreana and Ferreiraia nigropunctata , each described from a male specimen from northern Brazil, not only represent a single genus, but also a single species. Habitus, coloration, including the dark spots on the tegmina, and the male genitalia, most notably the conspicuous appendages of the tenth tergite are identical. In nigropunctata the dark markings on the hind tibia are more conspicuous, but they are present in acreana as well. While there is little doubt that the species belongs to the genus group Plagiopleurae, it was difficult to decide whether the insufficiently diagnosed genus Zenirella should be conserved. Piza considered the modified tenth tergite as diagnostic of Zenirella , without mentioning any other genera. He mentioned these appendages also for Ferreiraia , a genus he otherwise compared to Parableta . Such cerciform processes are actually diagnostic of Euceraia , and Piza’s specimens comply quite well with Grant’s (1964) diagnosis of that genus. So it is probably better to accommodate the species there.