Chamorro-Rengifo Juliana, Silva Bruno cansanÇÃo, Olivier Renan da Silva, Braun Holger, Araujo Douglas
Laboratório de Citotaxonomia e Evolução Cromossômica Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil.
Zootaxa. 2018 Mar 4;4388(3):347-372. doi: 10.11646/zootaxa.4388.3.3.
Three species of Conocephalus and two of Euxiphidion from several localities of the Central-West Region of Brazil were studied. Conocephalus goianus Piza, 1977, C. saltator (Saussure, 1859) and C. versicolor (Redtenbacher, 1891) are recorded for the first time from Mato Grosso do Sul, one new species Euxiphidion veroni sp. nov. is described, and a new combination, Euxiphidion caizanum comb. nov. is proposed. The calling songs of C. saltator, C. versicolor, and E. veroni sp. nov. are described. All these three species call very continuously, also in the daytime. The three species of Conocepha-lus have mitotic metaphases with 2n♂ = 33 = 32 + X and 2n♀ = 34 = 32 + XX. Euxiphidion caizanum comb. nov. and E. veroni sp. nov. have 2n♂ = 31 = 30 + X and 2n♀ = 32 = 30 + XX. Most of the autosomes of C. saltator and C. versicolor are meta/submetacentric, differing from C. goianus that has seven biarmed and nine monoarmed autosomes. Both Euxiphidion species present mostly telo/subtelocentric autosomes. The X chromosome is metacentric, and the largest element of the karyotype in the five species. No interstitial telomeric site (ITS) was observed in mitotic metaphases submitted to telomeric fluorescent in situ hybridization. Ecological aspects of the studied species are discussed.
对来自巴西中西部地区多个地点的3种草螽属（Conocephalus）和2种尤西菲螽属（Euxiphidion）进行了研究。戈亚斯草螽（Conocephalus goianus Piza，1977）、跳跃草螽（C. saltator (Saussure, 1859)）和杂色草螽（C. versicolor (Redtenbacher, 1891)）首次在南马托格罗索州被记录，描述了一个新物种——维罗尼尤西菲螽（Euxiphidion veroni sp. nov.），并提出了一个新组合——凯赞尤西菲螽（Euxiphidion caizanum comb. nov.）。描述了跳跃草螽、杂色草螽和维罗尼尤西菲螽的求偶鸣声。这三个物种都非常持续地鸣叫，白天也鸣叫。三种草螽属物种的有丝分裂中期染色体数目为2n♂ = 33 = 32 + X，2n♀ = 34 = 32 + XX。凯赞尤西菲螽和维罗尼尤西菲螽的2n♂ = 31 = 30 + X，2n♀ = 32 = 30 + XX。跳跃草螽和杂色草螽的大多数常染色体为中着丝粒/亚中着丝粒，这与戈亚斯草螽不同，戈亚斯草螽有7条双臂常染色体和9条单臂常染色体。两种尤西菲螽属物种的常染色体大多为端着丝粒/近端着丝粒。X染色体为中着丝粒，是这五个物种核型中最大的元素。在进行端粒荧光原位杂交的有丝分裂中期未观察到间插端粒位点（ITS）。讨论了所研究物种的生态方面。
