Centro de Estudios Parasitolgicos y de Vectores (CEPAVE); CONICET UNLP; La Plata; Argentina; Divisin Entomologa; Museo de La Plata FCNYM-UNLP; La Plata; Argentina.
Centro de Estudios Parasitolgicos y de Vectores (CEPAVE); CONICET UNLP; La Plata; Argentina; Comisin de Investigaciones Cientficas de la Provincia de Buenos Aires (CICPBA); Argentina.
Zootaxa. 2023 Aug 21;5336(1):33-81. doi: 10.11646/zootaxa.5336.1.2.
Diponthus Stl, one of the most diversified and widely distributed Romaleinae genera, is endemic to southern South America. This colorful grasshopper genus is placed within Romaleini and currently includes 16 valid species from a total of 22 nominal ones, most of them only known from their original descriptions. The aims of this study were to propose a morphology-based phylogenetic hypothesis of relationships among the species of Diponthus, and to conduct a taxonomic revision, including the description of four previously unknown species. Parsimony analysis of 79 morphological characters strongly recovered the monophyly of genus Diponthus, and Gurneyacris as its sister group. Internal clades within Diponthus were supported by external morphology and coloration patterns, while characters from male genitalia were shown to be more useful for species differentiation. Based on the results of the taxonomic review, Diponthus is constituted by 16 valid species, with the following nomenclatural changes proposed: Diponthus nigroconspersus (Stl) is considered a valid name; D. invidus Carl and D. bilineatus Rehn are synonymized under D. virgatus (Gerstaecker); Diponthus clarazianus Pictet & Saussure is synonymized under D. cribratus (Serville); D. paulista Rehn is synonymized under D. porphyreus (Gerstaecker); D. maculiferus (Walker) is synonymized under D. electus (Serville). New names are proposed for four undescribed species from Bolivia (D. colorbellus sp. nov. and D. dilatatus sp. nov.), Argentina (D. paranaensis sp. nov.) and Brazil (D. salvadorii sp. nov.).
多蓬突斯 Stl，最具多样性和广泛分布的罗玛利inae 属之一，是南美的特有种。这个色彩斑斓的蚱蜢属被置于罗玛利尼内，目前包括 16 个有效种，共有 22 个命名种，其中大多数仅根据原始描述而为人所知。本研究的目的是提出基于形态的 Diponthus 种间关系的系统发育假说，并进行分类修订，包括描述四个以前未知的物种。基于 79 个形态特征的简约分析强烈地恢复了多蓬突斯属的单系性，以及 Gurneyacris 作为其姐妹群。多蓬突斯属内的内部分支得到了外部形态和体色模式的支持，而雄性生殖器的特征被证明更有助于物种分化。基于分类修订的结果，Diponthus 由 16 个有效种组成，提出了以下命名变更：Diponthus nigroconspersus (Stl)被认为是有效名称；D. invidus Carl 和 D. bilineatus Rehn 被归入 D. virgatus (Gerstaecker)；Diponthus clarazianus Pictet & Saussure 归入 D. cribratus (Serville)；D. paulista Rehn 归入 D. porphyreus (Gerstaecker)；D. maculiferus (Walker)归入 D. electus (Serville)。为来自玻利维亚的四个未描述的物种（D. colorbellus sp. nov. 和 D. dilatatus sp. nov.）、阿根廷（D. paranaensis sp. nov.）和巴西（D. salvadorii sp. nov.）提出了新的名称。
