The authors revised the genus Morgenia Karsch, 1890 which now consists of eight species, of which three are here newly described (Morgenia plurimaculata Massa & Moulin, sp. n., M. angustipinnata Massa, sp. n., and M. lehmannorum Heller & Massa, sp. n.). Six of the eight species occur in the Tri National Sangha (TNS) comprising Dzanga-Sangha Special Reserve and Dzanga Ndoki National Park (Central African Republic), whose high biodiversity has been recently highlighted. In particular the genus is characterised by the presence of a more or less long spur at the inner mid tibia, different in each species; in M. modulata, it moved lower down into a new position at about 1⁄4 of tibia, which has a hollow underneath where the rest of the spur remains hidden. This is a unique known case in Phaneropterinae. Morphological characters distinguishing males of different species are presented. Bioacoustics of the new species M. lehmannorum are described. The patterns of the chromosome evolution in M. lehmannorum differ from other investigated African Phaneropterinae in terms of chromosome number and morphology, reduced ancestral chromosome number (2n = 25) implying a more derived condition.

中文翻译：

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热带非洲属 (Orthoptera, Tettigoniidae, Phaneropterinae)，重点是胫骨中部的骨刺

作者对 1890 年的 Morgenia Karsch 属进行了修订，该属现在由 8 个物种组成，其中 3 个在此处是新描述的（Morgenia plurimaculata Massa & Moulin, sp. n.、M. angustipinnata Massa, sp. n. 和 M. lehmannorum Heller & Massa, sp. n.)。八个物种中的六个出现在三国僧伽 (TNS) 中，包括 Dzanga-Sangha 特别保护区和 Dzanga Ndoki 国家公园（中非共和国），它们的高度生物多样性最近得到了强调。特别是该属的特点是在胫骨内侧中部存在或多或少长的骨刺，每个物种都不同；在 M. modulata 中，它向下移动到胫骨约 1⁄4 处的新位置，该位置下方有一个凹陷，其余的骨刺仍然隐藏。这是 Phaneropterinae 中一个独特的已知案例。呈现了区分不同物种雄性的形态特征。描述了新物种 M. lehmannorum 的生物声学。M. lehmannorum 的染色体进化模式在染色体数量和形态方面与其他研究的非洲 Phaneropterinae 不同，祖先染色体数量减少 (2n = 25) 意味着更衍生的条件。