Exploring Phylogenetic Relationships of the Mecocephala Group (Hemiptera: Pentatomidae) Using Continuous and Discrete Characters, with Notes on Taxonomy.

IF 1.4 3区 农林科学 Q2 ENTOMOLOGY Neotropical Entomology Pub Date : 2024-08-01 Epub Date: 2024-07-02 DOI:10.1007/s13744-024-01143-8
Lurdiana Dayse de Barros, Kim Ribeiro Barão, Jocélia Grazia
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Abstract

The Mecocephala group comprises about 50 species, restricted to the Neotropics and with the highest species richness in Neotropical South America. Several species use rice as host plants and their identification is facilitated by the presence of exaggerated head proportions and a unique male genitalic morphology. The taxonomy of the group has been extensively explored, but inferring its monophyly and especially its internal phylogenetic relationships has been challenging. Here, we inferred the phylogenetic relationships for the group assembling the most complete taxonomic sampling to date, analyzing discrete and continuous morphological characters through equal and implied weighted parsimony analyses. The monophyly of the group was recovered, but internal relationships varied slightly according to the dataset tested. Thus, we propose internal arrangements for the group and provide a formal description of the Mecocephala group, diagnoses for each genus, a dichotomous key to identify its genera, and illustrations of the morphological characters and type species.

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利用连续和离散特征探索 Mecocephala 组(半翅目:五蠹科)的系统发育关系,并附分类说明。
Mecocephala 类包括约 50 个物种,局限于新热带地区,其中南美洲新热带地区的物种丰富度最高。有几个物种以水稻为寄主植物,它们的头部比例夸张,雄性生殖器形态独特,便于识别。人们对该类群的分类进行了广泛的探讨,但推断其单系,特别是其内部的系统发生关系一直是个难题。在此,我们收集了迄今为止最完整的分类学样本,通过等权和隐含加权解析分析离散和连续形态特征,推断了该类群的系统发生关系。该类群的单系得到恢复,但其内部关系因测试的数据集不同而略有差异。因此,我们提出了该类群的内部排列,并提供了 Mecocephala 类群的正式描述、各属的诊断、识别其属的二分法检索表以及形态特征和模式种的插图。
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来源期刊
Neotropical Entomology
Neotropical Entomology 生物-昆虫学
CiteScore
3.30
自引率
5.60%
发文量
69
审稿时长
6-12 weeks
期刊介绍: Neotropical Entomology is a bimonthly journal, edited by the Sociedade Entomológica do Brasil (Entomological Society of Brazil) that publishes original articles produced by Brazilian and international experts in several subspecialties of entomology. These include bionomics, systematics, morphology, physiology, behavior, ecology, biological control, crop protection and acarology.
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