Martins Pedro H, Santos Adalberto J
Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, Brazil. CEP 31270-901..
Zootaxa. 2018 May 1;4415(3):423-451. doi: 10.11646/zootaxa.4415.3.2.
The spider genus Mecynogea comprises nine species distributed predominantly in the Neotropics. Although the genus has been revised recently, several aspects of its taxonomy and morphology are still unresolved. In this paper, Mecynogea infelix (Soares Camargo, 1948) is removed from the synonymy of Mecynogea bigibba Simon, 1903 and redescribed. Mecynogea chavona Levi, 1997 is considered a junior synonym of M. infelix. The male of Mecynogea buique Levi, 1997 is described and illustrated for the first time. The internal female genitalia of M. buique and M. infelix is described and shown to be remarkably different from each other. We show that part of the intraspecific variation reported previously for the female of M. infelix is the result of epigynum mutilation, possibly during copulation. We also report the presence of an internal branch on the terminal apophysis in the male palp of Mecynogea species. This structure, in some species visible only on the expanded bulb, is shown to be present in all Cyrtophorinae. The internal branch of the terminal apophysis, together with the conductor fully fused to the tegulum, is herein proposed as synapomorphic for the subfamily. Mecynogea lemniscata (Walckenaer, 1841) is recorded for the first time in Bolivia. We also provide new Brazilian records for M. infelix, M. bigibba, M. buique, M. eryhtromela (Holmberg, 1876), and M. sucre Levi, 1997. Mecynogea carvalhoi Mello-Leitão, 1944, currently considered a nomen dubium, is revalidated, transferred to Argiope Audouin, 1826, redescribed and illustrated for the first time.
蜘蛛属Mecynogea包含9个物种，主要分布在新热带地区。尽管该属最近已被修订，但在其分类学和形态学的几个方面仍未得到解决。在本文中，Mecynogea infelix（Soares Camargo，1948）被从Mecynogea bigibba Simon，1903的同物异名中移除并重新描述。Mecynogea chavona Levi，1997被认为是M. infelix的次异名。首次描述并图示了Mecynogea buique Levi，1997的雄性。描述了M. buique和M. infelix的雌性内部生殖器，结果表明它们彼此明显不同。我们发现，先前报道的M. infelix雌性的部分种内变异是外雌器残缺的结果，可能发生在交配过程中。我们还报告了在Mecynogea物种雄性触肢的末端突上存在一个内分支。这种结构，在某些物种中仅在膨大的球茎上可见，结果表明在所有曲腹蛛亚科中都存在。末端突的内分支，连同完全融合到 tegulum的引导器，在此被提议作为该亚科的共衍征。首次在玻利维亚记录到Mecynogea lemniscata（Walckenaer，1841）。我们还提供了M. infelix、M. bigibba、M. buique、M. eryhtromela（Holmberg，1876）和M. sucre Levi，1997在巴西的新记录。目前被认为是疑名的Mecynogea carvalhoi Mello-Leitão，1944被重新确认，转移到Argiope Audouin，1826，首次重新描述并图示。
