@article {47710, title = {A new Neotibicen cicada subspecies (Hemiptera: Cicadidae) from the southeastern USA forms hybrid zones with a widespread relative despite a divergent male calling song}, journal = {Zootaxa}, volume = {4272}, year = {2017}, month = {Jul-05-2019}, pages = {529}, abstract = {

A morphologically cryptic subspecies of Neotibicen similaris (Smith and Grossbeck) is described from forests of the Apalachicola region of the southeastern United States. Although the new form exhibits a highly distinctive male calling song, it hybridizes extensively where it meets populations of the nominate subspecies in parapatry, by which it is nearly surrounded. This is the first reported example of hybridization between North American nonperiodical cicadas. Acoustic and morphological characters are added to the original description of the nominate subspecies, and illustrations of complex hybrid song phenotypes are presented. The biogeography of N. similaris is discussed in light of historical changes in forest composition on the southeastern Coastal Plain.

}, keywords = {acoustic behavior, hybrid zone, hybridization, parapatric distribution, sexual signals, speciation}, issn = {1175-5326}, doi = {10.11646/zootaxa.4272.410.11646/zootaxa.4272.4.3}, url = {http://www.biotaxa.org/Zootaxa/issue/view/zootaxa.4272.4}, author = {Marshall, David C. and Kathy B. R. Hill} } @article {13531, title = {Cicadas (Hemiptera: Cicadidae) from Camiguin of Mindanao Province and Dinagat Island in the Philippines, with a new genus and three new species}, journal = {Zootaxa}, volume = {4097}, year = {2016}, pages = {187}, abstract = {

This paper provides the first faunal checklist for the family Cicadidae (Hemiptera) from Camiguin of Mindanao Province and Dinagat Island in the Philippines, comprising ten species belonging to nine genera. Cryptotympana shillana Lee \& Mohagan sp. nov., Orientopsaltria inermis (St\ål, 1870), Purana crassinotata Lee, 2015, and Huechys parvula Haupt, 1924 are recorded for the first time from Camiguin. Platypleura dinagatensis Lee sp. nov., Chremistica kyoungheeae Lee, 2010, Dundubia vaginata (Fabricius, 1787), Oncotympana pallidiventris St\ål, 1870, and Philipsalta nigrina Lee, Marshall \& Hill sp. nov. are newly recorded from Dinagat Island. A new genus Philipsalta Lee, Marshall \& Hill gen. nov. is erected. Huechysini Distant, 1905 syn. nov. is synonymized with Cicadettini Buckton, 1889. Information on geographic distributions of the Camiguin and Dinagat species is also provided.

}, keywords = {checklist, Cicadettini, Cryptotympana shillana, distribution, fauna, Huechysini, Philipsalta, Philipsalta nigrina, Platypleura dinagatensis, taxonomy}, issn = {1175-5326}, doi = {10.11646/zootaxa.4097.210.11646/zootaxa.4097.2.2}, url = {http://biotaxa.org/Zootaxa/issue/view/zootaxa.4097.2}, author = {Lee, Young June and Marshall, David C. and Alma B. Mohagan and Kathy B. R. Hill} } @article {12973, title = {Inflation of Molecular Clock Rates and Dates: Molecular Phylogenetics, Biogeography, and Diversification of a Global Cicada Radiation from Australasia (Hemiptera: Cicadidae: Cicadettini)}, journal = {Systematic Biology}, volume = {65}, year = {2016}, pages = {16-34}, chapter = {16}, abstract = {

Dated phylogenetic trees are important for studying mechanisms of diversification, and molecular clocks are important tools for studies of organisms lacking good fossil records. However, studies have begun to identify problems in molecular clock dates caused by uncertainty of the modeled molecular substitution process. Here we explore Bayesian relaxed-clock molecular dating while studying the biogeography of ca. 200 species from the global cicada tribe Cicadettini. Because the available fossils are few and uninformative, we calibrate our trees in part with a cytochrome oxidase I (COI) clock prior encompassing a range of literature estimates for arthropods. We show that tribe-level analyses calibrated solely with the COI clock recover extremely old dates that conflict with published estimates for two well-studied New Zealand subclades within Cicadettini. Additional subclade analyses suggest that COI relaxed-clock rates and maximum-likelihood branch lengths become inflated relative to EF-1? intron and exon rates and branch lengths as clade age increases. We present corrected estimates derived from: (i) an extrapolated EF-1? exon clock derived from COI-calibrated analysis within the largest New Zealand subclade; (ii) post hoc scaling of the tribe-level chronogram using results from subclade analyses; and (iii) exploitation of a geological calibration point associated with New Caledonia. We caution that considerable uncertainty is generated due to dependence of substitution estimates on both the taxon sample and the choice of model, including gamma category number and the choice of empirical versus estimated base frequencies. Our results suggest that diversification of the tribe Cicadettini commenced in the early- to mid-Cenozoic and continued with the development of open, arid habitats in Australia and worldwide. We find that Cicadettini is a rare example of a global terrestrial animal group with an Australasian origin, with all non-Australasian genera belonging to two distal clades. Within Australia, we show that Cicadettini is more widely distributed than any other cicada tribe, diverse in temperate, arid and monsoonal habitats, and nearly absent from rainforests. We comment on the taxonomic implications of our findings for thirteen cicada genera. [Aridification; Australia; branch lengths; calibration; climate change; gamma distribution; maximum-likelihood; relaxed clock.]

}, doi = {10.1093/sysbio/syv069}, author = {Marshall, David C. and Kathy B. R. Hill and Moulds, Max and Vanderpool, Dan and Cooley, John R. and Simon, Chris} }