Revisão do gênero Mecocephala Dallas, 1851 (Heteroptera, Pentatomidae)

Schwertner, Cristiano Feldens; Grazia, Jocélia; Fernandes, José Antônio Marin

doi:10.1590/s0085-56262002000200009

Cited by 543 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By briefly analyzing the taxonomic literature, we found five other species belonging to other tribes and subfamilies that exhibit similar ventral rims: Acledra spp. (Faúndez, Rider & Carvajal, 2014), Cahara incisura (Fan & Liu, 2013), Braunus sciocorinus (Barão et al, 2016), Edessa puravida (Fernandes et al, 2015), Mecocephala bonariensis (Schwertner, Grazia & Fernandes, 2002). This series of potential convergences reinforce that shape changes of the pygophore in the parts that touch the female plates (and vice versa) are advantageous strategies to perform an effective genital coupling in Pentatomidae.…”

Section: Convergence and Evolutionary Trends Of The Pentatomidae Genimentioning

confidence: 78%

Strong functional integration among multiple parts of the complex male and female genitalia of stink bugs

Genevcius¹,

Schwertner²

2017

Biological Journal of the Linnean Society

View full text Add to dashboard Cite

Genitalia are among the most studied phenotypes because they exhibit high anatomical diversity, experience fast evolutionary rates and may be shaped by several evolutionary mechanisms. A key element to uncover the mechanisms behind such impressive diversity is their copulatory function. This topic has been overlooked, especially concerning structures not directly involved in sperm transfer and reception. Here, we conduct a hypothesis-driven experimental study to elucidate the operation of various external genital parts in five species of stink bugs with differing levels of phylogenetic relatedness. These insects are unique because their male and female genitalia are externally well developed, rigid and composed of multiple components. In contrast with their anatomical complexity and diversity, we show that genital structures work jointly to perform a single function of mechanical stabilization during copula. However, distinct lineages have evolved alternative strategies to clasp different parts of the opposite sex. In spite of a high functional correspondence between male and female traits, the overall pattern of our data does not clearly support an intersexual coevolutionary scenario. We propose that the extraordinary male genital diversity in the family is probably a result of a process of natural selection enhancing morphological accommodation, but we consider alternative mechanisms.

show abstract

Section: Convergence and Evolutionary Trends Of The Pentatomidae Genimentioning

confidence: 78%

Strong functional integration among multiple parts of the complex male and female genitalia of stink bugs

Genevcius¹,

Schwertner²

2017

Biological Journal of the Linnean Society

View full text Add to dashboard Cite

show abstract

“…2002; Schwertner et al . 2002). Most of these genera show reduced or absent parameres, elongate head and second antennal segment reduced, making them easily distinguishable from the genera in the Euschistus group.…”

Section: Discussionmentioning

confidence: 99%

“…2002; Schwertner et al . 2002). Thus, we informally call this aggregate of genera the Euschistus group.…”

Section: Methodsmentioning

confidence: 99%

Phylogenetic analysis of the Euschistus group (Hemiptera: Pentatomidae) suggests polyphyly of Dichelops Spinola, 1837 with the erection of Diceraeus Dallas, 1851, stat. rev.

2020

View full text Add to dashboard Cite

Carpocorini are the most diverse tribe within Pentatominae, comprising about 100 genera and 500 species, with the highest diversity found in the Neotropics. Within Carpocorini, some groups of genera have been, formally or informally, proposed based on morphological similarities and taxonomic history. The Euschistus group was informally proposed and comprises 20 genera, including Euschistus Dallas, 1851 and Dichelops Spinola, 1837. Both of these genera had their monophyly under dispute recently. Dichelops, which includes the species commonly known as the green‐belly stink bug, comprises 16 species in three subgenera, with an exclusively Neotropical distribution. The genus was revised recently, and for each subgenus, a set of distinct morphological characters was listed, which allow their precise identification. We tested the monophyly of the Euschistus group and of Dichelops under parsimony criteria using discrete and continuous characters and two‐character weighting methods. The Euschistus group was paraphyletic, and Dichelops was polyphyletic in every analysis, and the taxonomic characters formerly proposed as diagnostic for the genus and its subgenera were homoplastic. On the basis of the phylogenetic result, we propose the erection of Diceraeus Dallas, 1851, stat. rev. to the status of genus and Dichelops comprising two subgenera, the nominal and Prodichelops Grazia, 1978. This decision has implications for applied entomology, because species of Diceraeus are important crop pests in the Neotropics.

show abstract

Diversity of the external thoracic scent efferent system of Carpocorini (Heteroptera: Pentatomidae) with character selection for phylogenetic inference

Barão

Ferrari

Adami

et al. 2017

Zoologischer Anzeiger

View full text Add to dashboard Cite

Revisão do gênero Mecocephala Dallas, 1851 (Heteroptera, Pentatomidae)

Abstract: ABSTRACT. Revision of the genus

Cited by 543 publications

References 1 publication

Strong functional integration among multiple parts of the complex male and female genitalia of stink bugs

Strong functional integration among multiple parts of the complex male and female genitalia of stink bugs

Phylogenetic analysis of the Euschistus group (Hemiptera: Pentatomidae) suggests polyphyly of Dichelops Spinola, 1837 with the erection of Diceraeus Dallas, 1851, stat. rev.

Diversity of the external thoracic scent efferent system of Carpocorini (Heteroptera: Pentatomidae) with character selection for phylogenetic inference

Contact Info

Product

Resources

About