Clarification of the taxonomy of extant crickets of the subfamily Eneopterinae (Orthoptera: Grylloidea; Gryllidae)

Robillard, Tony; Desutter‐Grandcolas, Laure

doi:10.11646/zootaxa.1789.1.3

Cited by 24 publications

(13 citation statements)

References 15 publications

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“…(). The genus Swezwilderia , previously considered as Eneopterinae incertae sedis (Robillard & Desutter‐Grandcolas, ), is confirmed within the tribe Lebinthini, as suggested by previous studies (Nattier et al ., ; Chintauan‐Marquier et al ., ). It seems related to the clade ( Ligypterus + Ponca ), although this relationship is poorly supported.…”

Section: Discussionsupporting

confidence: 69%

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In and out of the Neotropics: historical biogeography of Eneopterinae crickets

Vicente

Kergoat

Dong

et al. 2017

Journal of Biogeography

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Aim Multiple biogeographical scenarios involving vicariance and different colonization routes can explain disjunct species distributions in the Southern Hemisphere. Here, we tested several alternative hypotheses in Eneopterinae crickets, a diverse subfamily presenting a disjunct worldwide distribution. We inferred a dated phylogeny of Eneopterinae and reconstructed their biogeographical history to unravel the origin of their present-day distribution, focusing on their multiple origins in the Neotropics.Location Worldwide.Methods We sampled 62 eneopterine species representing all extant genera. We inferred their phylogenetic relationships through Bayesian and maximum likelihood approaches based on four mitochondrial and three nuclear gene sequences. Divergence time estimates were inferred using Bayesian relaxed clock approaches and primary fossil calibrations. Biogeographical analyses were conducted with the default dispersal-extinction-cladogenesis (DEC) model and a variant model (DEC+J), which accounts for rare-jump dispersal events. ResultsOur dating analyses showed that the Eneopterinae is far older than expected and its diversification can be traced back to the Late Cretaceous (c. 76 Ma). In this context, the most supported biogeographical scenario (under DEC+J) suggests that the Neotropics were colonized twice independently: first during the break-up of Gondwana, when Antarctica, Australia and South America started separating (compatible with a vicariance event if relying on the result of the DEC model alone); later through a northern recolonization originating from Southeast Asia, likely related to a Holarctic Boreotropical distribution of an eneopterine lineage during the Eocene. Main conclusionsWe provided a dated worldwide biogeographical framework for the Eneopterinae crickets. Overall, the subfamily disjunct distribution pattern is better explained by both ancient and recent dispersal events. Whether this could reflect a widespread pattern in insect groups exhibiting a disjunct distribution remains to be investigated by studying other insect lineages. The information gathered here will also help foster new directions for future studies concerning the acoustic innovations of this clade.We used the software Muscle (Edgar, 2004) with default parameters, implemented in Mega 6.0 (Tamura et al., 2013) to align the sequences. With Mega, we also checked if the protein-coding genes were congruent with codon reading frames. We conducted preliminary maximum likelihood

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Section: Discussionsupporting

confidence: 69%

“…The c . 250 species of Eneopterinae ( sensu Robillard & Desutter‐Grandcolas, ) have been extensively studied for the diversity of their communication signals (e.g. Robillard et al ., ; ter Hofstede et al ., ).…”

Section: Introductionmentioning

confidence: 99%

In and out of the Neotropics: historical biogeography of Eneopterinae crickets

Vicente

Kergoat

Dong

et al. 2017

Journal of Biogeography

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“…They have a world‐wide distribution, with most of the diversity located in Pacific islands. The subfamily has been the subject of several phylogenetic studies focused on the evolution of acoustic communication and behaviour (Robillard & Desutter‐Grandcolas, 2004a,b, 2006, 2011b). Previous studies were based on both morphological (Robillard & Desutter‐Grandcolas, 2004a) and limited molecular data sets (Robillard & Desutter‐Grandcolas, 2006), and did not discuss distributional evidence.…”

Section: Methodsmentioning

confidence: 99%

“…The ingroup consists of 43 eneopterine species (see Appendix S1 in the Supporting Information), representing all tribes of the subfamily and 15 of the 17 genera ( sensu Robillard & Desutter‐Grandcolas, 2008; Robillard, 2011). Given the region of interest for the study, the sampling is concentrated on taxa from the South Pacific and in particular around New Caledonia (Fig.…”

Section: Methodsmentioning

confidence: 99%

Older than New Caledonia emergence? A molecular phylogenetic study of the eneopterine crickets (Orthoptera: Grylloidea)

Nattier

Robillard

Desutter‐Grandcolas

et al. 2011

Journal of Biogeography

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Aim A New Caledonian insect group was studied in a world‐wide phylogenetic context to test: (1) whether local or regional island clades are older than 37 Ma, the postulated re‐emergence time of New Caledonia; (2) whether these clades show evidence for local radiations or multiple colonizations; and (3) whether there is evidence for relict taxa with long branches in phylogenetic trees that relate New Caledonian species to geographically distant taxa. Location New Caledonia, south‐west Pacific. Methods We sampled 43 cricket species representing all tribes of the subfamily Eneopterinae and 15 of the 17 described genera, focusing on taxa distributed in the South Pacific and around New Caledonia. One nuclear and three mitochondrial genes were analysed using Bayesian and parsimony methods. Phylogenetic divergence times were estimated using a relaxed clock method and several calibration criteria. Results The analyses indicate that, under the most conservative dating scenario, New Caledonian eneopterines are 5–16 million years old. The largest group in the Pacific region dates to 18–29 Ma. New Caledonia has been colonized in two phases: the first around 10.6 Ma, with the subsequent diversification of the endemic genus Agnotecous, and the second with more recent events around 1–4 Ma. The distribution of the sister group of Agnotecous and the lack of phylogenetic long branches in the genus refute an assumption of major extinction events in this clade and the hypothesis of local relicts. Main conclusions Our phylogenetic studies invalidate a simple scenario of local persistence of this group in New Caledonia since 80 Ma, either by survival on the New Caledonian island since its rift from Australia, or, if one accepts the submergence of New Caledonia, by local island‐hopping among other subaerial islands, now drowned, in the region during periods of New Caledonian submergence.

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“…This subfamily has a worldwide distribution and encompasses 249 valid extant species (Cigliano et al 2018). Its taxonomy and phylogeny is a research focus in recent years (Robillard and Desutter-Grandcolas 2008;Nattier et al 2011;Vicente et al 2017). Although mitogenome represents a powerful tool to elucidate insect phylogenetic relationships (Cameron 2014), its utilization in Eneopterinae is not feasible so far due to the availability of only one mitogenome in GenBank (Dong et al 2017).…”

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confidence: 99%

Characterization of the complete mitochondrial genome of a bush cricket Xenogryllus marmoratus (Insecta: Orthoptera)

Zhang

2019

Mitochondrial DNA Part B

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To provide genetic data for the cricket subfamily Eneopterinae, the complete mitochondrial genome (mitogenome) of a bush cricket Xenogryllus marmoratus (Haan, 1844) was determined. This mitogenome was 15,762 bp in size containing the typical 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, and a control region (CR). Compared with the ancestral insect gene arrangement, X. marmoratus had an inversion involving trnE-trnS1-trnN. Phylogenetic analysis supported that X. marmoratus was sister to a formerly sequenced species Cardiodactylus muiri of Eneopterinae. This study provides new data for further phylogenetic studies of Eneopterinae or higher taxa.

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Clarification of the taxonomy of extant crickets of the subfamily Eneopterinae (Orthoptera: Grylloidea; Gryllidae)

Cited by 24 publications

References 15 publications

In and out of the Neotropics: historical biogeography of Eneopterinae crickets

In and out of the Neotropics: historical biogeography of Eneopterinae crickets

Older than New Caledonia emergence? A molecular phylogenetic study of the eneopterine crickets (Orthoptera: Grylloidea)

Characterization of the complete mitochondrial genome of a bush cricket Xenogryllus marmoratus (Insecta: Orthoptera)

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