@article {57956, title = {Sound emission and reception tuning in three cicada species sharing the same habitat}, journal = {The Journal of the Acoustical Society of America}, volume = {127}, year = {2010}, month = {Jan-03-2010}, pages = {1681 - 1688}, abstract = {

Many animal species acoustically communicate at the same place and time generating complex acoustic environments. However, the acoustic parameter space is usually structured, with each species emitting identifiable signals. While signal partitioning has been reported, very few analyses include the mechanical spectral response of auditory organs. The loud chorus generated by . The vibration pattern of L. plebejus shows traveling waves as previously observed in Ctra. atra. The spectral properties of both calling songs and tympanal auditory systems primarily indicate that each species uses its own frequency band.y, except for C. orni, which is sensitive to the lowest frequency band of its song. In contrast, female TMs are broadly tuned to the male songs. Ctra. atra females differ by tuning to frequencies slightly higher than the male song. Hence, acoustic space partitioning occurs for both emitter and receiver, but does not seem to fully preclude interference risk as some spectral overlap exists. In addition to the local physical ecology of each species, selective attention to conspecific signals is likely to be enhanced by further mechanical and neuronal processing.

}, issn = {0001-4966}, doi = {10.1121/1.3291036}, url = {http://asa.scitation.org/doi/10.1121/1.3291036}, author = {Sueur, Jerome and James F.C. Windmill and Daniel Robert} } @article {57637, title = {Sexual dimorphism in auditory mechanics: tympanal vibrations of Cicada orni}, year = {2008}, abstract = {

In cicadas, the tympanum is anatomically intricate and employs complex vibrations as a mechanism for auditory frequency analysis. Using microscanning laser Doppler vibrometry, the tympanal mechanics of Cicada orni can be characterized in controlled acoustical conditions. The tympanum of C. orni moves following a simple drum-like motion, rather than the travelling wave found in a previous study of Cicadatra atra. There is a clear sexual dimorphism in the tympanal mechanics. The large male tympanum is unexpectedly insensitive to the dominant frequency of its own calling song, possibly a reflection of its dual purpose as a sound emitter and receiver. The small female tympanum appears to be mechanically sensitive to the dominant frequency of the male calling song and to high-frequency sound, a capacity never suspected before in these insects. This sexual dimorphism probably results from a set of selective pressures acting in divergent directions, which are linked to the different role of the sexes in sound reception and production. These discoveries serve to indicate that there is far more to be learnt about the development of the cicada ear, its biomechanics and evolution, and the cicada\&$\#$39;s acoustic behaviour.

}, keywords = {biomechanics, hearing, high-frequency reception, laser vibrometry, predation, selective forces, tympanum}, doi = {10.1242/jeb.018804}, url = {http://jeb.biologists.org/cgi/doi/10.1242/jeb.018804https://syndication.highwire.org/content/doi/10.1242/jeb.018804}, author = {Sueur, J. and James F. C. Windmill and Robert, D.} } @article {57635, title = {The next step in cicada audition: measuring pico-mechanics in the cicada{\textquoteright}s ear}, year = {2009}, abstract = {

Female cicadas use sound when they select a mate from a chorus of singing males. The cicada has a tympanal ear; and the tympanal membrane, and constituent tympanal ridge, act as both acousto-mechanical transducers and frequency filters. The tympanal ridge is physically connected to a large number of mechanoreceptor neurons via a cuticular extension known as the tympanal apodeme. Using microscanning laser Doppler vibrometry, we measured for the first time the in vivo vibrations of the apodeme of female Cicadatra atra in response to the motion of the tympanum driven by sound. These measurements reveal that the nanoscale motion of the tympanal membrane is over a magnitude greater than that of the apodeme. Furthermore, the apodeme acts as an additional mechanical frequency filter, enhancing that of the tympanal ridge, narrowing the frequency band of vibration at the mechanoreceptor neurons to that of the male calling song. This study enhances our understanding of the mechanical link between the external ear of the cicada and its sensory cells.

}, keywords = {apodeme, biomechanics, Cicada, frequency discrimination, hearing, tympanum}, doi = {10.1242/jeb.033019}, url = {http://jeb.biologists.org/cgi/doi/10.1242/jeb.033019https://syndication.highwire.org/content/doi/10.1242/jeb.033019}, author = {James F. C. Windmill and Sueur, J. and Robert, D.} } @article {57622, title = {Tuning the drum: the mechanical basis for frequency discrimination in a Mediterranean cicada}, year = {2006}, abstract = {

Cicadas are known to use sound to find a mate. While the mechanism employed by male cicadas to generate loud calling songs has been described in detail, little information exists to explain how their ears work. Using microscanning laser Doppler vibrometry, the tympanal vibrations in the cicada Cicadatra atra are measured in response to acoustic playbacks. The topographically accurate optical measurements reveal the vibrational behaviour of the anatomically complex tympanal membrane. Notably, the tympanal ridge, a distinct structural element of the tympanum that is a link to the receptor cells, undergoes mechanical vibrations reminiscent of a travelling wave. In effect, the frequency for which the maximum deflection amplitude is observed regularly decreases from the apex to the base of the ridge. It is also shown that whilst female ears are mechanically tuned to the male\&$\#$39;s song, the male\&$\#$39;s tympanum is only partially tuned to its own song. This study establishes the presence of a peripheral auditory mechanism that can potentially process auditory frequency analysis. In view of the importance of acoustic signalling in cicadas, this unconventional tympanal mechanism may be employed in the context of species recognition and sexual selection.

}, keywords = {biomechanics, Cicada, frequency discrimination, hearing, travelling wave, tympanum}, author = {Sueur, Jerome and James F.C. Windmill and Daniel Robert} } @article {57601, title = {Auditory Sensitivity of an Acoustic Parasitoid (Emblemasoma sp., Sarcophagidae, Diptera) and the Calling Behavior of Potential Hosts}, journal = {Brain, Behavior and Evolution}, volume = {72}, year = {2008}, month = {Jan-01-2008}, pages = {16 - 26}, abstract = {

Using field broadcasts of model male calling songs, we tested whether Tibicen pruinosa and T. chloromera (Homoptera: Cicadidae) are candidate hosts for acoustic parasitoid flies. The model calling song of T. pruinosa attracted 90\% of the flies (Sarcophagidae: Emblemasoma sp.; all larvapositing females) when broadcast simultaneously with the model T. chloromera song, a phonotactic bias reconfirmed in single song playbacks. In paired broadcasts of model T. pruinosa songs with different relative amplitudes (3 dB or 6 dB), significantly more flies were attracted to the more powerful song, a result consistent with the responses predicted by a model proposed by Forrest and Raspet [1994]. Using intracellular recordings and dye injections, we characterized the sensitivity of auditory units in sound-trapped flies. Intracellular recordings from six auditory units (5 interneurons, 1 afferent) revealed best sensitivity for frequencies near 3-4 kHz, matching the predominant spectral components of the calling songs of both species of cicada. Interestingly, although flies could be attracted to T. pruinosa broadcasts throughout the day, hourly censuses of singing males revealed that calling occurred exclusively at dusk. Furthermore, the duration of the dusk chorus in T. pruinosa was significantly shorter than the midday chorus of the less attractive song of T. chloromera. We propose that the tight temporal aggregation of the dusk chorus time could function to reduce risk from attracted parasitoids.

}, keywords = {Chorus, Cicada, cricket, Diel Behavior, Emblemasoma, frequency tuning, interneuron, Ormia, parasitoid, phonotaxis, Tibicen}, issn = {0006-8977}, doi = {10.1159/000139458}, url = {https://www.karger.com/Article/FullText/139458}, author = {Farris, H.E. and Oshinsky, M.L. and Forrest, T.G. and Ronald R. Hoy} } @article {50511, title = {Caledopsalta gen. nov., a new genus for the New Caledonian cicadas previously assigned to Pauropsalta Goding \& Froggatt, plus the description of four new species (Hemiptera: Cicadoidea: Cicadidae)}, journal = {Austral Entomology}, year = {2017}, month = {May-08-2018}, abstract = {

Species currently assigned to Pauropsalta Goding \& Froggatt in New Caledonia are reviewed. Molecular and morphological studies indicate that New Caledonian cicadas placed in this genus belong in a different genus. The genus Caledopsalta gen. nov. is therefore erected to accommodate Caledopsalta johanae comb. nov., and Caledopsalta judithae. comb. nov., as well as the following four new species: Caledopsalta ouitchamboensis sp. nov., C. canteminvantum sp. nov., C. garrula sp. nov. and C. sciaphila sp. nov. Male calling songs of all species are analysed and described from field recordings. A key to the species of Caledopsalta gen. nov. is provided. This new genus is included within the tribe Cicadettini, with Pauropsalta johanae designated as the type species.

}, keywords = {bioacoustics, Cicada, short-range endemism, taxonomy}, doi = {10.1111/aen.12295}, url = {http://doi.wiley.com/10.1111/aen.12295}, author = {Delorme, Quentin} } @article {47307, title = {Is microhabitat segregation between two cicada species ( Tibicina haematodes and Cicada orni ) due to calling song propagation constraints?}, journal = {Naturwissenschaften}, volume = {90}, year = {2003}, month = {Jan-07-2003}, pages = {322 - 326}, abstract = {

The cicada species Tibicina haematodes and Cicada orni are two sympatric species often inhabiting vineyards. We show that they occupy two distinct levels: males of T. haematodes produce their calling songs from a high position in vine foliage while males of C. orni call from a low position near the ground on vine trunks. Experiments consisting of broadcasting and re-recording experimental signals in natural habitats from low and high positions show that signals are more and more modified as sender\–receiver distance increases. T. haematodes would have an advantage when calling on trunks rather than on branches whereas C. orni would be able to call indiscriminately from both low and high positions. Thus, the microhabitat segregation observed between T. haematodes and C orni in vineyards does not seem to be related to calling song propagation constraints, but may be due to other ethological or ecological factors.

}, issn = {0028-1042}, doi = {10.1007/s00114-003-0432-5}, url = {http://link.springer.com/10.1007/s00114-003-0432-5}, author = {Sueur, J. and Aubin, T.} } @article {17275, title = {Morphology, songs and genetics identify two new cicada species from Morocco: Tettigettalna afroamissa sp. nov. and Berberigetta dimelodica gen. nov. \& sp. nov. (Hemiptera: Cicadettini)}, journal = {Zootaxa}, volume = {4237}, year = {2017}, month = {Jan-03-2017}, pages = {517}, abstract = {

Morocco has been the subject of very few expeditions on the last century with the objective of studying small cicadas. In the summer of 2014 an expedition was carried out to Morocco to update our knowledge with acoustic recordings and genetic data of these poorly known species. We describe here two new small-sized cicadas that could not be directly assigned to any species of North African cicadas: Tettigettalna afroamissa sp. nov. and Berberigetta dimelodica gen. nov. \& sp. nov. In respect to T. afroamissa it is the first species of the genus to be found outside Europe and we frame this taxon within the evolutionary history of the genus. Acoustic analysis of this species allows us to confidently separate T. afroamissa from its congeners. With B. dimelodica, a small species showing a remarkable calling song characterized by an abrupt frequency modulation, a new genus had to be erected. Bayesian inference and maximum likelihood phylogenetic analyses with DNA-barcode sequences of Cytochrome C Oxidase 1 support the monophyly of both species, their distinctness and revealed genetic structure within B. dimelodica. Alongside the descriptions we also provide GPS coordinates of collection points, distributions and habitat preferences

}, keywords = {Cicada, Hemiptera, Morocco, new genus, new species}, issn = {1175-5326}, doi = {10.11646/zootaxa.4237.310.11646/zootaxa.4237.3.4}, url = {http://biotaxa.org/Zootaxa/issue/view/zootaxa.4237.3}, author = {Gon{\c c}alo Jo{\~a}o Costa and Vera L. Nunes and Eduardo Marabuto and Raquel Mendes and Telma G. Laurentino and Jos{\'e} Alberto Quartau and PAULO, OCT{\'A}VIO S. and Paula Cristina Sim{\~o}es} }