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Phylogeny of the tribe Dorynotini based on maximum likelihood analysis of the concatenated molecular dataset comprising two nuclear (28S, CAD) and one mitochondrial (CO1) gene fragment. Nodal support values represent bootstraps of the maximum likelihood analysis and posterior probabilities of the Bayesian inference. Nodes that were not consistently recovered in all phylogenetic analyses are indicated by '*'. Adult Cassidinae photographs (top to bottom): Physonota attenuata Boheman; Stolas modica (Boheman); Eremionycha bahiana (Boheman); Dorynota (s.s.) pugionata (Germar); Omoteina humeralis (Olivier); and Dorynota (Akantaka) truncata (Fabricius).

Phylogeny of the tribe Dorynotini based on maximum likelihood analysis of the concatenated molecular dataset comprising two nuclear (28S, CAD) and one mitochondrial (CO1) gene fragment. Nodal support values represent bootstraps of the maximum likelihood analysis and posterior probabilities of the Bayesian inference. Nodes that were not consistently recovered in all phylogenetic analyses are indicated by '*'. Adult Cassidinae photographs (top to bottom): Physonota attenuata Boheman; Stolas modica (Boheman); Eremionycha bahiana (Boheman); Dorynota (s.s.) pugionata (Germar); Omoteina humeralis (Olivier); and Dorynota (Akantaka) truncata (Fabricius).

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The Neotropical tribe Dorynotini is characterized by a conspicuous tubercle or spine adorning the elytra, which, along with a few other characters, has been used to differentiate its recognized five genera and two subgenera. However, relationships among these taxa and the evolutionary origin of the pronounced tubercle remain speculative. Here we pr...

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Context 1
... lecular dataset recovered Cassidini as the sister group to Dorynotini with strong support (UFBoot = 100, PP = 1.0). Cassidini is decisively paraphyletic, as pre- vious phylogenetic reconstructions have demonstrated (Chaboo, 2007;López-Pérez et al., 2017). A repre- sentative of Cassidini was recovered as sister taxon to Dorynotini in all analyses (Fig. 3), Syngambria bisinuata (Boheman, 1855) in the ML analysis and Eremionycha bahiana (Boheman, 1855) in the BI ana- lysis (Fig. ...
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... (s.s.) aculeata, was recovered as sister to Paratrikona (UFBoot = 97, PP = 0.87), together with Omoteina forming a clade endemic to the Greater Antilles, with high support ('clade 2'; UFBoot = 100, PP = 1.0); and (3) Dorynota (s.s.) bidens was recovered as sister to the subgenus Akantaka, with high support ('clade 3' UFBoot = 99, PP = 0.99) (Fig. ...
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... 2 is consistently recovered as monophyletic in all analyses, with high nodal support (see Fig. 3; Supporting To address the incongruence of the current classifi- cation with our results, we propose a nomenclatural reorganization of clade 2, by proposing the synonymy of the genus Omoteina with Paratrikona syn. nov., and the transfer of its species and D. (s.s.) aculeata to the genus Omoteina. As a result, the clade is composed of ...
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... subgenus Dorynota s.s. was diagnosed by pos- sessing a spiniform post-scutellar projection, the pro- notum partly inserted in the elytral anterior margin, and subequal pretarsal claws (Monrós & Viana, 1949). In our analysis, we recover the subgenus Dorynota s.s. as paraphyletic, with representatives dispersed in three separate clades (Fig. 3). Clade 1 is recovered as sister to all other Dorynotini, grouping with a wide geographical range throughout central and southwest South America. The ancestral character state recon- struction did not recover potential synapomorphies for the clade. However, its internal sister taxa, D. (s.s.) parallela + D. (s.s.) pugionata, share two ...

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