A monograph on the genus Tetraserica from the Indochinese region (Coleoptera, Scarabaeidae, Sericini)

Fabrizi, Silvia; Dalstein, Vivian; Ahrens, Dirk

doi:10.3897/zookeys.837.32057

Cited by 6 publications

(6 citation statements)

References 7 publications

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“…The resulting maximum likelihood trees represent the first molecular phylogenetic hypotheses for Sri Lankan Sericini. Two distinct clades of Selaserica that were previously also characterized by morphological data (Fabrizi & Ahrens, 2014) could be confirmed in the present study. The two groups are characterized by the presence or absence of a carinate hypomeron for the Selaserica splendifica group and the Se .…”

Section: Discussionsupporting

confidence: 90%

“…For this purpose, all male genitalia were dissected and labeled. Identification to species level was done using recent literature (Ahrens & Fabrizi, 2016; Fabrizi & Ahrens, 2014; Ranasinghe et al, 2020) and, in some cases, by comparison with type specimens. Three to seven male individuals of each morphospecies per location were selected for DNA extraction and subsequent sequencing (in total 280 individuals).…”

Section: Methodsmentioning

confidence: 99%

“…This is even true for herbivore scarab chafers, of which some species appear to be serious crop pests despite being highly endemic (Ahrens, 2004;. In the last decade, dozens of new herbivore scarab species have been discovered from the subcontinent, and Asia in general Ahrens et al, 2014aAhrens et al, , 2014bAhrens et al, , 2014cFabrizi & Ahrens, 2014;Liu et al, 2014aLiu et al, , 2014bLiu et al, , 2014cLiu et al, , 2015Liu et al, , 2016.…”

Section: Introductionmentioning

confidence: 99%

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Multiple species delimitation approaches with COI barcodes poorly fit each other and morphospecies – An integrative taxonomy case of Sri Lankan Sericini chafers (Coleoptera: Scarabaeidae)

Ranasinghe

Eberle

Thormann

et al. 2022

Ecology and Evolution

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DNA taxonomy including barcoding and metabarcoding is widely used to explore the diversity in biodiversity hotspots. In most of these hotspot areas, chafers are represented by a multitude of species, which are well defined by the complex shape of male genitalia. Here, we explore how well COI barcode data reflect morphological species entities and thus their usability for accelerated species inventorization. We conducted dedicated field surveys in Sri Lanka to collect the species-rich and highly endemic Sericini chafers (Coleoptera: Scarabaeidae). Congruence among results of a series of protocols for de novo species delimitation and with morphology-based species identifications was investigated. Different delimitation methods, such as the Poisson tree processes (PTP) model, Statistical Parsimony Analysis (TCS), Automatic Barcode Gap Discovery (ABGD), Assemble Species by Automatic Partitioning (ASAP), and Barcode Index Number (BIN) assignments, resulted in different numbers of molecular operational taxonomic units (MOTUs). All methods showed both over-splitting and lumping of morphologically identified species. Only 18 of the observed 45 morphospecies perfectly matched MOTUs from all methods. The congruence of delimitation between MOTUs and morphospecies expressed by the match ratio was low, ranging from 0.57 to 0.67. TCS and multirate PTP (mPTP) showed the highest match ratio, while (BIN) assignment resulted in the lowest match ratio and most splitting events. mPTP lumped more species than any other method. Principal coordinate analysis (PCoA) on a match ratio-based distance matrix revealed incongruent outcomes of multiple DNA delimitation methods, although applied to the same data. Our results confirm that COI barcode data alone are unlikely to correctly delimit all species, in particular, when using only a single delimitation approach. We encourage the integration of various approaches and data, particularly morphology, to validate species boundaries.

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Section: Discussionsupporting

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multiple species delimitation approaches with COI barcodes poorly fit each other and morphospecies – An integrative taxonomy case of Sri Lankan Sericini chafers (Coleoptera: Scarabaeidae)

Ranasinghe

Eberle

Thormann

et al. 2022

Ecology and Evolution

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“…We analyzed data for four available (out of five) South American genera and nineteen Old-Word genera of Sericini chafers (mainly from Asia), represented so far by 108 and 736 species, respectively (list of examined species, see Supplement Table 1). Data were taken on male holotype, syntype, or lectotype specimens of the respective species from newly measured specimens (Pacheco et al, in review a, b) and the following published taxonomic revisions Ahrens et al, 2014a, b, c;Bohacz & Ahrens 2020a, b;Chandra et al, 2021;Eberle et al, 2017b;Fabrizi et al, 2019aFabrizi et al, , b, 2021Liu et al, 2014a, b, c, d;2015aPacheco et al, 2021;Ranasinghe et al, 2020;Sreedevi et al, 2018Sreedevi et al, , 2019. In case no males were available, we used available female specimens (in a few cases in Astaena; Supplement Table 1).…”

Section: Methodsmentioning

confidence: 99%

Comparative analysis of morphospace of Neotropical Sericini (Coleoptera: Scarabaeidae): disparity in the light of species diversity and activity patterns

Pacheco

Monné²,

Ahrens

2021

Org Divers Evol

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The striking diversity among herbivorous Scarabaeoidea is still poorly understood. Therefore, we compare in these work linear measurements of body features of Neotropical and Old World linages of Sericini chafers to uncover patterns possibly linked to foraging behavior (day or night activity) or to the success of their diversification in terms of diversity. If diversity in Sericini chafers would be linked to morphological disparity, we would expect in the much less diverse Neotropical lineage a very clear drop of morphological disparity. Comparing the two major sister clades, Old World and Neotropical Sericini, in terms of their disparity and diversity, the here elaborated distance data do not support the hypothesis that morphological disparity could be a driver for the diversity of Sericini in the Old World. The influence of the metacoxal length on morphological disparity appears to represent a possible key for a better understanding of the evolution of Sericini in the Neotropical region (including their lower diversity) and answers the question of why they are so much less diverse than their sister lineage in the Old World. The increasing length of the metacoxal plate appears to be a result of the presence of a secondary metacoxal joint in Old World Sericini, which has a crucial impact on hind leg mobility and digging behavior. General body shape and single morphological characters appear under similar general evolutionary pressure: high morphometric disparity between nocturnal and diurnal Neotropical species was also corroborated by disparity estimated from discrete morphological characters.

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“…It comprises about 4000 species allocated in 200 genera (Ahrens 2006a). While Sericini are still generally poorly known in terms of their taxonomy and systematics, some significant progress has been made over the past two decades with hundreds of new species of Sericini discovered in Asia and Africa (e.g., Ahrens 2004a;Fabrizi & Ahrens 2014;Ahrens & Fabrizi 2016;Eberle et al 2017b;Fabrizi et al 2019aFabrizi et al , 2019bLiu et al 2019). However, South American species are still comparatively poorly known .…”

Section: Introductionmentioning

confidence: 99%

Revision of type specimens of Astaena (Coleoptera: Scarabaeidae: Melolonthinae: Sericini) described by L.W. Saylor

Pacheco

Monné

Vaz‐de‐Mello

et al. 2021

EJT

Self Cite

883

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This is the first part of a revision of the type specimens of the South American Sericini. Herein, we examine type specimens of Astaena described by Lawrence Webster Saylor (1913–1999). We provide diagnostic redescriptions, images of habitus, aedeagus, and labels of the type specimens of all 18 species described by him in the genus Astaena. We raise Sayloria Frey, 1973, a former subgenus of Symmela Erichson, 1835 that includes three species, to genus level. Our study results in the following new combinations and synonymy: Sayloria bicoloripes (Saylor, 1946) comb. nov. (= A. postnodata Frey, 1973 syn. nov.), S. abcora (Saylor, 1946) comb. nov. (= A. apolinarmaria Saylor, 1946 syn. nov.) and S. pottsi (Saylor, 1946) comb. nov.

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A monograph on the genus Tetraserica from the Indochinese region (Coleoptera, Scarabaeidae, Sericini)

Cited by 6 publications

References 7 publications

Multiple species delimitation approaches with COI barcodes poorly fit each other and morphospecies – An integrative taxonomy case of Sri Lankan Sericini chafers (Coleoptera: Scarabaeidae)

Multiple species delimitation approaches with COI barcodes poorly fit each other and morphospecies – An integrative taxonomy case of Sri Lankan Sericini chafers (Coleoptera: Scarabaeidae)

Comparative analysis of morphospace of Neotropical Sericini (Coleoptera: Scarabaeidae): disparity in the light of species diversity and activity patterns

Revision of type specimens of Astaena (Coleoptera: Scarabaeidae: Melolonthinae: Sericini) described by L.W. Saylor

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