Phylogeny of North Americas largest cicada radiation redefines Tibicinoides and Okanagana (Hemiptera: Auchenorrhyncha: Cicadidae: Tibicininae)

Tibicinoides, with three small endemic California cicada species, has a confusing, intertwined systematic history with Okanagana that we unravel here. An ingroup including all species of Tibicinoides and the majority (84.7%) of Okanagana species were sampled for six gene regions, polarized with Clidophleps, Okanagodes, Subpsaltria, and Tibicina outgroups, and subjected to Bayesian phylogenetic analysis. Although the ingroup was monophyletic from all outgroups including Tibicina, Tibicinoides rendered Okanagana paraphyletic among two major ingroup clades. To bring classification into agreement with phylogeny, we redescribe and redefine Tibicinoides to include all Okanagana species with a hooked uncus in the male genitalia, all of which grouped with the type T. cupreosparsa (Uhler, 1889) in the first of these clades: T. boweni (Chatfield-Taylor & Cole, 2020) comb. n., T. catalina (Davis, 1936) comb. n., T. hesperia (Uhler, 1876) comb. n., T. mercedita (Davis, 1915), T. minuta (Davis, 1915), T. pallidula (Davis, 1917a) comb. n., T. pernix (Bliven, 1964) comb. n., T. rubrovenosa (Davis, 1915) comb. n., T. simulata (Davis, 1921) comb. n., T. striatipes (Haldeman, 1852) comb. n., T. uncinata (Van Duzee, 1915) comb. n., T. utahensis (Davis, 1919) comb. n., and T. vanduzeei (Distant, 1914) comb. n. Okanagana is redescribed and restricted to the species of the second major clade which contained the type O. rimosa (Say, 1830). We describe two new genera for morphologically distinct orphan lineages: Chlorocanta gen. nov. for C. viridis (Davis, 1918) comb. n. and Hewlettia gen. nov. for H. nigriviridis (Davis, 1921) comb. n. We recognize O. rubrobasalis Davis, 1926 stat. rev. as a species and relegate two former species to junior subjective synonyms: O. noveboracensis (Emmons, 1854) = O. canadensis (Provancher, 1889) and O. occidentalis (Walker in Lord, 1866) = O. lurida Davis, 1919. Tibicinoides and Okanagana together represent a rapid radiation that presents challenges to phylogenetic analysis including suboptimal outgroups and short internodes.

The genus Tibicina Kolenati, 1857 in Morocco (Hemiptera: Cicadidae: Tibicininae): taxonomic assessment from integrative research

A new subspecies, Tibicina quadrisignata pilleti Puissant ssp. nov. is described from Morocco. This cicada is similar to Tibicina quadrisignata (Hagen, 1855) but differs mainly in the body color of the males and some acoustic parameters, notably in the courtship song. A complete pipeline is developed for detailed analysis of the morphology and acoustic behavior of the two Tibicina taxa currently known in Morocco, i.e. Tibicinaquadrisignata (Hagen, 1855) pilleti Puissant ssp. nov. and Tibicina maldesi Boulard, 1981. Biology, ecology and distribution are presented for the first time for both taxa. Tibicinamaldesi emits an abnormally high carrier frequency relative to its size. It could be an adaptation to avoid acoustic interference with a sympatric Tibicina species yet to be discovered or extinct.

Phylogeography of the endemic red-tailed cicadas of New Zealand (Hemiptera: Cicadidae: Rhodopsalta), and molecular, morphological and bioacoustical confirmation of the existence of Hudson’s Rhodopsalta microdora

Why do some genera radiate, whereas others do not? The genetic structure of present-day populations can provide clues for developing hypotheses. In New Zealand, three Cicadidae genera are depauperate [Amphipsalta (three species), Notopsalta (one species) and Rhodopsalta (three species)], whereas two have speciated extensively [Kikihia (~30 species/subspecies) and Maoricicada (~20 species/subspecies). Here, we examine the evolution of Rhodopsalta, the last New Zealand genus to be studied phylogenetically and phylogeographically. We use Bayesian and maximum-likelihood analyses of mitochondrial cox1 and nuclear EF1α gene sequences. Concatenated and single-gene phylogenies for 70 specimens (58 localities) support its monophyly and three described species: Rhodopsalta cruentata, Rhodopsalta leptomera and Rhodopsalta microdora, the last taxon previously regarded as uncertain. We provide distribution maps, biological notes and the first descriptions of diagnostic songs. We show that both R. cruentata and R. microdora exhibit northern and southern genetic subclades. Subclades of the dry-adapted R. microdora clade show geographical structure, whereas those of the mesic R. cruentata and sand-dune specialist R. leptomera have few discernible patterns. Genetic, bioacoustical and detailed distributional evidence for R. microdora add to the known biodiversity of New Zealand. We designate a lectotype for Tettigonia cruentata  Fabricius, 1775, the type species of Rhodopsalta.

Checklist and provisional atlas of singing cicadas (Hemiptera: Cicadidae) of Bulgaria, based on bioacoustics

Background

The singing cicadas (Hemiptera: Cicadidae) of Bulgaria were poorly known. There are published records for 14 species: Cicadaorni, Lyristesplebejus, Cicadatraatra, Cicadatrahyalina, Cicadatrapersica, Cicadettamontana, Cicadettamediterranea, Dimissalnadimissa, Oligoglenatibialis, Tympanistalnagastrica, Pagiphoraannulata, Saticulacoriaria, Tibicinahaematodes and Tibicinasteveni.

New information

Two species from this list were doubtful in the beginning of our study, since Tympanistalnagastrica is distributed in central and southern Portugal and Saticulacoriaria is a north African species.

We checked three major institutional collections housed in Sofia, Bulgaria: the National Museum of Natural History (SOFM), the Institute of Zoology (ZISB) and the Biology Faculty of Sofia University "St. Kliment Ohridski" (BFUS). We confirmed 11 of the species mentioned in literature, except Cicadettamediterranea and found two additional species: Cicadatraplatyptera and Cicadettamacedonica (the specimens in BFUS were bioacoustically confirmed).

Based on this knowledge, we further investigated the singing cicadas of Bulgaria with the use of morphological and bioacoustic methods in the years 2008, 2009, 2010, 2012, 2016, 2018 and 2019. We were not able to confirm the presence of Cicadatrapersica and Cicadettamediterranea, but found three additional species: Cicadettabrevipennis s. lat., Cicadettacantilatrix and Tettigettulapygmea. Using the bioacoustic methods, we also detected unknown singing patterns, which could belong to three or four additional taxa, which need to be described.

The Bulgarian fauna of singing cicadas at the moment consists of 16 confirmed and 3-4 potential species.