Redefinition and taxonomic revision of the “buqueti” species-group, Dichotomius Hope, 1838 (Coleoptera: Scarabaeidae: Scarabaeinae)

Arias-Buriticá, Jorge Armando; Vaz‐de‐Mello, Fernando Z.

doi:10.1016/j.rbe.2018.11.002

Cited by 536 publications

(3 citation statements)

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“…This decision was confirmed by the distinctive shape of the lamella copulatrix, whose superior lobes are absent, while the two inferior lobes are well developed and distinctly curved upward. Unlike in D. worontzowi , the lamella copulatrix of D. semiaeneus exhibits the typical morphology of the species currently in the buqueti group (Arias‐Buriticá & Vaz‐de‐Mello ; see also Arias‐Buriticá 2011, unpublished M.Sc thesis; available online: http://www.bdigital.unal.edu.co/4208/1/01190368.2011.pdf), and also some of the Dichotomius studied by López‐Guerrero (). The lamella copulatrix of D. semiaeneus is indeed, squared and not separated into two distinct parts as in D. worontzowi .…”

Section: Taxonomymentioning

confidence: 92%

“…In 2011, J. A. Arias‐Buriticá carried out a morphology‐based taxonomic revision of the buqueti group (Luederwaldt ) (Arias‐Buriticá & Vaz‐de‐Mello ; but see also his M.Sc. thesis, unpublished; available online: http://www.bdigital.unal.edu.co/4208/1/01190368.2011.pdf), and comparison of the holotype of Dichotomius nimuendaju with the picture of the holotype of D .…”

Section: Taxonomymentioning

confidence: 99%

“…Despite the great contribution of Luederwaldt to the study of the genus Dichotomius , most of his species‐groups have now been demonstrated to be phylogenetically inconsistent, as they often comprise distantly related species. Recent taxonomic revisions have provided a more accurate morphological characterisation of Luederwaldt's groups, including also the description of several new species from Central and South America (Gandini & Aguilar ; Arias‐Buriticá & Vaz‐de‐Mello , , ; Nunes & Vaz‐de‐Mello , ; Maldaner et al . ; Nunes ; Vaz‐de‐Mello & Nunes ; Valois et al .…”

Section: Introductionmentioning

confidence: 99%

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Taxonomic review of theDichotomius mamillatusgroup (Coleoptera: Scarabaeidae), with a description of a new species,Dichotomius(Dichotomius)gandiniisp. nov., from western Amazonia

Rossini¹,

Vaz‐de‐Mello

2020

Austral Entomology

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We conducted a morphologically based taxonomic revision of the Dichotomius mamillatus species group (Scarabaeinae). A new species, Dichotomius (Dichotomius) gandinii sp. nov., from western Amazonia is described, illustrated and included in this group, along with Dichotomius (Dichotomius) mamillatus (Felsche, 1901), Dichotomius (Dichotomius) robustus (Luederwaldt, 1935) and Dichotomius (Dichotomius) worontzowi (Pereira, 1942). The external and genital morphology of the mamillatus group and its species are defined through an in‐depth examination of the surviving type material, as well as hundreds of reference specimens deposited in several natural history collections. An illustrated identification key to the Dichotomius species of the group is provided. Pinotus calcaratus Arrow, 1913 (currently Dichotomius calcaratus) is considered to be a junior subjective synonym of Dichotomius (Dichotomius) mamillatus. This research further resolves the many taxonomic questions that are still hampering the correct identification of Dichotomius species in the Neotropics, providing key diagnostic tools for researchers interested in these scarab beetles. The comprehensive morphological study of the D. mamillatus group highlights the important taxonomic value of the often‐overlooked endophallic structures, as well as their central role in informing hypotheses of systematic relationships.

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Section: Taxonomymentioning

confidence: 92%

Section: Taxonomymentioning

confidence: 99%