This study is mainly based on breeding. Started in 1999 and continued until today, this breeding has permitte to observe for the first time the reproduction of "different species" of Pterochroza, and to note that they can naturally mate with each other. Layings follow these matings and viable larvae are born looking more or less one or the other of their parents. As an outcome, the species created by Vignon, do not exist: Pterochroza (Serville, 1831) becomes a monospecific genus and P. ocellata the single species of the genus. The following new synonyms are proposed: Gryllus ocellatus Linné (1923) = P. infestata Vignon (1922) n. syn. = P. nimia Vignon (1922) n. syn. = P. uniexcisa Vignon (1923) n. syn. = P. maculata Vignon (1925) n. syn.
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