@article {58315, title = {Socotracris kleukersi n. gen. n. sp., a new troglobitic cricket from Socotra (Yemen) (Orthoptera: Grylloidea, Phalangopsidae)}, year = {2012}, abstract = {

The cricket Socotracris kleukersi n. gen., n. sp., collected in a cave at Wadi Zerik, Diksam Plateau, Socotra, Yemen is described. The genus and species are characterized by male and female genitalia and external morphology.

}, keywords = {Cave life, Indian Ocean, new species}, doi = {10.11646/zootaxa.3252.110.11646/zootaxa.3252.1.3}, url = {https://biotaxa.org/Zootaxa/issue/view/zootaxa.3252.1https://biotaxa.org/Zootaxa/article/view/zootaxa.3252.1.3https://biotaxa.org/Zootaxa/article/viewFile/48838/42297}, author = {Desutter-Grandcolas, Laure and Felix, Rob P. W. H.} } @article {58249, title = {Anterastes davrazensis sp. n. (Orthoptera, Tettigoniidae): morphology, song and 16S rDNA phylogeny}, year = {2012}, abstract = {

The new species Anterastes davrazensis sp. n. (Orthoptera, Tettigoniidae) is described from south-eastern Turkey. Description, diagnosis and relationships of the new species were studied utilizing morphology, male calling songs and 16S rDNA sequence data from all species in the genus. Morphology and song syllable structure indicate A. davrazensis sp. n. is related to A. uludaghensis. Phylogenetic analyses based on representative haplotypes of 16S rDNA, using Sureyaella bella, Parapholidoptera distincta and Bolua turkiyae as outgroups, also suggested strong support to the relationship of these two species. A. davrazensis sp. n. differs from its closest relative A. uludaghensis by the higher number of stridulatory pegs and the song, consisting of irregular syllable groups.

}, keywords = {Anatolia, Anterastes, Anterastes davrazensis sp. n., Orthoptera, phylogeny, song, taxonomy}, doi = {10.11646/zootaxa.3401.110.11646/zootaxa.3401.1.4}, url = {https://biotaxa.org/Zootaxa/issue/view/zootaxa.3401.1https://biotaxa.org/Zootaxa/article/view/zootaxa.3401.1.4https://biotaxa.org/Zootaxa/article/viewFile/49952/43338}, author = {Kaya, Sarp and CHOBANOV, DRAGAN and {\c C}iplak, Battal} } @article {58180, title = {Mating Behaviour and Vibratory Signalling in Non-Hearing Cave Crickets Reflect Primitive Communication of Ensifera}, year = {2012}, abstract = {

In Ensifera, the lack of well-supported phylogeny and the focus on acoustic communication of the terminal taxa hinders understanding of the evolutionary history of their signalling behaviour and the related sensory structures. For Rhaphidophoridae, the most relic of ensiferans following morphology-based phylogenies, the signalling modes are still unknown. Together with a detailed description of their mating process, we provide evidence on vibratory signalling for the sympatric European species Troglophilus neglectus and T. cavicola. Despite their temporal shift in reproduction, the species\’ behaviours differ significantly. Signalling by abdominal vibration constitutes an obligatory part of courtship in T. neglectus, while it is absent in T. cavicola. Whole-body vibration is expressed after copulation in both species. While courtship signalling appears to stimulate females for mating, the function of post-copulation signals remains unclear. Mating and signalling of both species were found to take place in most cases on bark, and less frequently on other available substrates, like moss and rock. The signals\’ frequency spectra were substrate dependent, but with the dominant peak always expressed below 120 Hz. On rock, the intensity of T. neglectus courtship signals was below the species\’ physiological detection range, presumably constraining the evolution of such signalling in caves. The species\’ behavioural divergence appears to reflect their divergent mating habitats, in and outside caves. We propose that short-range tremulation signalling in courtship, such as is expressed by T. neglectus, represents the primitive mode and context of mechanical signalling in Ensifera. The absence of high-frequency components in the signals may be related to the absence of the crista acoustica homologue (CAH) in the vibratory tibial organ of Rhaphidophoridae. This indirectly supports the hypothesis proposing that the CAH, as an evolutionary precursor of the ear, evolved in Ensifera along the (more) complex vibratory communication, also associated with signals of higher carrier frequency.

}, doi = {10.1371/journal.pone.004764610.1371/journal.pone.0047646.g00110.1371/journal.pone.0047646.g00210.1371/journal.pone.0047646.g00310.1371/journal.pone.0047646.g00410.1371/journal.pone.0047646.g00510.1371/journal.pone.0047646.t001}, url = {https://dx.plos.org/10.1371/journal.pone.0047646}, author = {Stritih, Nata{\v s}a and {\v C}okl, Andrej}, editor = {Gordon, Deborah M.} } @conference {57991, title = {Sound reception and radiation in a small insect}, booktitle = {Acoustics 2012}, year = {2012}, address = {Nantes, France}, abstract = {

Insects are small; this is a fact of their life. In some contexts this is an advantage, such as insects do not injure themselves through the effects of gravity. In other contexts this is a disadvantage, especially in the context of sound production and reception. The wavelengths of sound that insects such as crickets produce and receive are several times larger than their body size. For sound production, this is particularly challenging and inefficient, as sub-wavelength radiation (size to lambda ratio\ \>\ 1:100) requires great energy expenditure to produce sufficient sound pressure. In receiving sound, they face the reciprocal problem and are inefficient receivers. In addition,\  because of their size they cannot rely on cues other animals use to detect the direction of sound. Nonetheless, sound is extremely important to these insects as they use it for mate attraction and to evade predators. We investigate this problem by combining the technique of microscanning laser Doppler vibrometry with finite element modelling; and explain some of the biomechanical tricks a tiny tree cricket uses to overcome the disadvantages of size.

}, author = {Mhatre, Natasha and Montealegre-Z, Fernando and Rohini Balakrishnan and Daniel Robert} } @article {57974, title = {Traveling Waves on the Organ of Corti of the Chinchilla Cochlea: Spatial Trajectories of Inner Hair Cell Depolarization Inferred from Responses of Auditory-Nerve Fibers}, year = {2012}, abstract = {

Spatial magnitude and phase profiles for inner hair cell depolarization throughout the chinchilla cochlea were inferred from responses of auditory-nerve fibers to threshold- and moderate-level tones and tone complexes. Firing-rate profiles for frequencies \≤ 2 kHz are bimodal, with the major peak at the characteristic place and a secondary peak at 3\–5 mm from the extreme base. Response- phase trajectories are synchronous with peak outward stapes displacement at the extreme cochlear base and accumulate 1.5-period lags at the characteristic places. High-frequency phase trajectories are very similar to the trajectories of basilar-membrane peak velocity toward scala tympani. Low- frequency phase trajectories undergo a polarity flip in a region, 6.5\–9 mm from the cochlear base, where traveling-wave phase velocity attains a local minimum and a local maximum and where the onset latencies of near-threshold impulse responses computed from responses to near-threshold white noise exhibit a local minimum. That region is the same where frequency-threshold tuning curves of auditory-nerve fibers undergo a shape transition. Since depolarization of inner hair cells presumably indicates the mechanical stimulus to their stereocilia, the present results suggest that distinct low-frequency forward waves of organ of Corti vibration are launched simultaneously at the extreme base of the cochlea and at the 6.5\–9 mm transition region, from where antiphasic reflections arise.

}, doi = {10.1523/JNEUROSCI.1138-12.2012}, url = {http://www.jneurosci.org/cgi/doi/10.1523/JNEUROSCI.1138-12.2012}, author = {Temchin, A. N. and Recio-Spinoso, A. and Cai, H. and Ruggero, M. A.} } @article {57938, title = {Tonotopically Arranged Traveling Waves in the Miniature Hearing Organ of Bushcrickets}, year = {2012}, abstract = {

Place based frequency discrimination (tonotopy) is a fundamental property of the coiled mammalian cochlea. Sound vibrations mechanically conducted to the hearing organ manifest themselves into slow moving waves that travel along the length of the organ, also referred to as traveling waves. These traveling waves form the basis of the tonotopic frequency representation in the inner ear of mammals. However, so far, due to the secure housing of the inner ear, these waves only could be measured partially over small accessible regions of the inner ear in a living animal. Here, we demonstrate the existence of tonotopically ordered traveling waves covering most of the length of a miniature hearing organ in the leg of bushcrickets in vivo using laser Doppler vibrometery. The organ is only 1 mm long and its geometry allowed us to investigate almost the entire length with a wide range of stimuli (6 to 60 kHz). The tonotopic location of the traveling wave peak was exponentially related to stimulus frequency. The traveling wave propagated along the hearing organ from the distal (high frequency) to the proximal (low frequency) part of the leg, which is opposite to the propagation direction of incoming sound waves. In addition, we observed a non-linear compression of the velocity response to varying sound pressure levels. The waves are based on the delicate micromechanics of cellular structures different to those of mammals. Hence place based frequency discrimination by traveling waves is a physical phenomenon that presumably evolved in mammals and bushcrickets independently.

}, doi = {10.1371/journal.pone.0031008}, url = {https://dx.plos.org/10.1371/journal.pone.0031008}, author = {Arun Palghat Udayashankar and K{\"o}ssl, Manfred and Nowotny, Manuela} } @article {57936, title = {Acoustic analysis reveals a new cryptic bush{\textendash}cricket in the Carpathian Mountains (Orthoptera, Phaneropteridae)}, year = {2012}, abstract = {

A new morphologically cryptic species of phaneropterid bush\–cricket from the genus Isophya is described from the Eastern Carpathian Mountains: Isophya dochia sp. n. Sound analysis and morphological details are discussed in the paper, comparing the new species with several Isophya species having similar morphol- ogy and acoustic behavior.

}, doi = {10.3897/zookeys.254.3892}, url = {http://zookeys.pensoft.net/articles.php?id=3512}, author = {Ionut Stefan Iorgu} } @article {57337, title = {Towards understanding plant bioacoustics}, journal = {Trends in Plant Science}, volume = {17}, year = {2012}, month = {Jan-06-2012}, pages = {323 - 325}, abstract = {

Little is known about plant bioacoustics. Here, we pres- ent a rationale as to why the perception of sound and vibrations is likely to have also evolved in plants. We then explain how current evidence contributes to the view that plants may indeed benefit from mechanosen- sory mechanisms thus far unsuspected.

}, issn = {13601385}, doi = {10.1016/j.tplants.2012.03.002}, url = {https://linkinghub.elsevier.com/retrieve/pii/S1360138512000544https://api.elsevier.com/content/article/PII:S1360138512000544?httpAccept=text/xmlhttps://api.elsevier.com/content/article/PII:S1360138512000544?httpAccept=text/plain}, author = {Gagliano, Monica and Mancuso, Stefano and Daniel Robert} } @article {53560, title = {Synonymies of Wasp-Mimicking Species within the Katydid Genus Aganacris (Orthoptera: Tettigoniidae: Phaneropterinae)}, journal = {Journal of Orthoptera Research}, volume = {21}, year = {2012}, month = {Jan-11-2012}, pages = {245 - 250}, abstract = {

Five neotropical wasp-mimicking species of the genus Aganacris\—two known only from females and three from males\—are reviewed. Based on observation of interspecific interactions and morphological comparison, it is shown that sexual dimorphism occurs within species, and that female species are conspecific with sympatric male species. This is reinforced by field observations in northern Peru of a pairing between A. pseudosphex and A. nitida, wherein the male was in the process of secreting a spermatophore. Aganacris sphex and A. pseudosphex are morphologically nearly identical and probably represent variants of a single species. Since those species known from females only are both senior to sympatric male species, the number of species is reduced from five to two \– A. nitida (A. pseudosphex and A. sphex designated herein as junior synonyms) and A. velutina (A. insectivora designated herein as a junior synonym).

}, keywords = {katydid, mimicry, Pompilidae, Sphecidae}, issn = {1082-6467}, doi = {10.1665/034.021.0209}, url = {http://www.bioone.org/doi/abs/10.1665/034.021.0209}, author = {Nickle, David A.} } @article {53552, title = {Song and morphology of some little known species of Gomphocerinae (Orthoptera: Acrididae) from Turkey with description of a new species}, journal = {Entomologica Fennica}, volume = {23}, year = {2012}, pages = {127{\textendash}139}, abstract = {

Morphology and acoustic signals of four species of the subfamily Gompho- cerinae (Orthoptera: Acrididae) from Turkey are studied. Eremippus zeybekoglui Mol sp. n. is described from Northern Anatolia. Gomphocerus transcaucasicus Mistshenko, 1951, stat. n. is considered as a distinct species, not a subspecies of Gomphocerus sibiricus (Linnaeus, 1767). Previously unknown male of Dasypippus uvarovi Karabag, 1953 is described.

}, author = {Mol, Abbas} } @article {53550, title = {Song and morphology of some little known species of Gomphocerinae (Orthoptera: Acrididae) from Turkey with description of a new species}, journal = {Entomologica Fennica}, volume = {23}, year = {2012}, pages = {127{\textendash}139}, abstract = {

Morphology and acoustic signals of four species of the subfamily Gompho- cerinae (Orthoptera: Acrididae) from Turkey are studied. Eremippus zeybekoglui Mol sp. n. is described from Northern Anatolia. Gomphocerus transcaucasicus Mistshenko, 1951, stat. n. is considered as a distinct species, not a subspecies of Gomphocerus sibiricus (Linnaeus, 1767). Previously unknown male of Dasypippus uvarovi Karabag, 1953 is described.

}, author = {Mol, Abbas} } @article {53551, title = {Song and morphology of some little known species of Gomphocerinae (Orthoptera: Acrididae) from Turkey with description of a new species}, journal = {Entomologica Fennica}, volume = {23}, year = {2012}, pages = {127{\textendash}139}, abstract = {

Morphology and acoustic signals of four species of the subfamily Gompho- cerinae (Orthoptera: Acrididae) from Turkey are studied. Eremippus zeybekoglui Mol sp. n. is described from Northern Anatolia. Gomphocerus transcaucasicus Mistshenko, 1951, stat. n. is considered as a distinct species, not a subspecies of Gomphocerus sibiricus (Linnaeus, 1767). Previously unknown male of Dasypippus uvarovi Karabag, 1953 is described.

}, author = {Mol, Abbas} } @article {53548, title = {A Taxonomic Revision of the Neotropical Genus Aegimia St{\r a}l, 1874 (Orthoptera, Tettigoniidae, Phaneropterinae)}, journal = {Journal of Orthoptera Research}, volume = {21}, year = {2012}, month = {Jan-05-2012}, pages = {109 - 132}, abstract = {

Aegimia St\ål, 1874, a Neotropical katydid genus of the Phaneropterinae (Orthoptera: Tettigoniidae), is revised based on the examination of 106 specimens from Mexico, Costa Rica, Panama, Colombia and Brazil. The genus is recognized by a long sword-shaped fastigium, mid- and hindtibiae strongly flattened, and leaf-shaped tegmina. The following species are redescribed: A. catharinensis Piza, 1950, A. cultrifera St\ål, 1874 and A. elongata Rehn, 1903. Two new species are described: Aegimia maculifolia sp. nov. (from Costa Rica, Panama and Colombia) and Aegimia venarecta sp. nov. (from Costa Rica). Geographic distribution of A. cultrifera is expanded to Costa Rica. The female of A. catharinensis remains unknown. A pictorial key to all species is presented and details of the male genitalic characters described and illustrated.

}, issn = {1082-6467}, doi = {10.1665/034.021.0108}, url = {http://www.bioone.org/doi/abs/10.1665/034.021.0108}, author = {Dias, Priscila and Rafael, Jos{\'e} Albertino and Piotr Naskrecki} } @article {52676, title = {Speech enhancement using a minimum mean-square error short-time spectral modulation magnitude estimator}, journal = {Speech Communication}, volume = {54}, year = {2012}, month = {Jan-02-2012}, pages = {282 - 305}, abstract = {

In this paper we investigate the enhancement of speech by applying MMSE short-time spectral magnitude estimation in the modu- lation domain. For this purpose, the traditional analysis-modification-synthesis framework is extended to include modulation domain processing. We compensate the noisy modulation spectrum for additive noise distortion by applying the MMSE short-time spectral mag- nitude estimation algorithm in the modulation domain. A number of subjective experiments were conducted. Initially, we determine the parameter values that maximise the subjective quality of stimuli enhanced using the MMSE modulation magnitude estimator. Next, we compare the quality of stimuli processed by the MMSE modulation magnitude estimator to those processed using the MMSE acoustic magnitude estimator and the modulation spectral subtraction method, and show that good improvement in speech quality is achieved through use of the proposed approach. Then we evaluate the effect of including speech presence uncertainty and log-domain processing on the quality of enhanced speech, and find that this method works better with speech uncertainty. Finally we compare the quality of speech enhanced using the MMSE modulation magnitude estimator (when used with speech presence uncertainty) with that enhanced using different acoustic domain MMSE magnitude estimator formulations, and those enhanced using different modulation domain based enhancement algorithms. Results of these tests show that the MMSE modulation magnitude estimator improves the quality of processed stimuli, without introducing musical noise or spectral smearing distortion. The proposed method is shown to have better noise suppres- sion than MMSE acoustic magnitude estimation, and improved speech quality compared to other modulation domain based enhance- ment methods considered.

}, keywords = {Analysis-modification-synthesis (AMS), MMSE short-time modulation magnitude estimator (MME), MMSE short-time spectral magnitude estimator (AME), Modulation domain, Modulation magnitude spectrum, Modulation spectrum, Speech enhancement}, issn = {01676393}, doi = {10.1016/j.specom.2011.09.003}, url = {http://linkinghub.elsevier.com/retrieve/pii/S016763931100135X}, author = {Paliwal, Kuldip and Schwerin, Belinda and W{\'o}jcicki, Kamil} } @article {50677, title = {The acridoidea of Benin (Orthoptera): an annoted checklist}, journal = {International Journal of Science and Advanced Technology}, volume = {2}, year = {2012}, pages = {22-52}, chapter = {22}, abstract = {

S urveys were conducted from 1991 to 1994 and 2001 to 2005, to characterize grasshopper species occurring in Benin. The study covered 50 sites distributed throughout the different agro - ecological zones in Benin. The sampled sites ranged between latitudes 6\°N and 12\° N. An annotated checklist of the 8 6 species encountered in four families and 12 subfamilies was provided. Seven teen species, first recorded in Benin were described. Grasshoppers\’ ecology and their geographical distribution were described. In addition, habitat, characteristics including vegetations and soils preferred by these grasshopper species were mentionned. Th e different soil types on which the grasshoppers were found were reported. The population abundance of the different species was monitored in relation with the associated host - plants.

}, keywords = {distribution, diversity, ecological zone, grasshoppers, Orthoptera, West Africa}, author = {A. A. Para{\"\i}so and O-K. Douro-Kpindu and A. Onzo and A. Thomas Odjo and V. Ahomagnon and F. Obognon and I Godonou} } @article {47305, title = {Convergent Evolution Between Insect and Mammalian Audition}, journal = {Science}, volume = {338}, year = {2012}, month = {Apr-15-20122141}, pages = {968 - 971}, issn = {0036-8075}, doi = {10.1126/science.1225271}, url = {http://www.sciencemag.org/cgi/doi/10.1126/science.1225271https://syndication.highwire.org/content/doi/10.1126/science.1225271}, author = {Fernando Montealegre-Zapata and Jonsson, T. and Robson-Brown, K. A. and Postles, M. and Daniel Robert} } @book {16839, title = {Fauna d{\textquoteright}Italia Orthoptera}, series = {Fauna d{\textquoteright}Italia}, volume = {48}, year = {2012}, pages = {563}, publisher = {Calderini}, organization = {Calderini}, issn = {9788850654086}, author = {Massa, B. and Fontana, P. and Buzzetti, F. M. and Kleukers, R. and Ode, B} } @book {16747, title = {Grashoppers \& Crickets}, series = {New Naturalists}, volume = {120}, year = {2012}, publisher = {HarperCollins}, organization = {HarperCollins}, address = {London, United Kingdom}, isbn = {978-0-00-727723-0}, author = {Ted Benton} } @article {11172, title = {Wing stridulation in a Jurassic katydid (Insecta, Orthoptera) produced low-pitched musical calls to attract females}, journal = {Proceedings of the National Academy of Sciences}, volume = {109}, year = {2012}, month = {Jun-03-2012}, pages = {3868 - 3873}, abstract = {

Behaviors are challenging to reconstruct for extinct species, particularly the nature and origins of acoustic communication. Here we unravel the song of Archaboilus musicus Gu, Engel and Ren sp. nov., a 165 million year old stridulating katydid. From the exceptionally preserved morphology of its stridulatory apparatus in the forewings and phylogenetic comparison with extant species, we reveal that A. musicus radiated pure-tone (musical) songs using a resonant mechanism tuned at a frequency of 6.4 kHz. Contrary to previous scenarios, musical songs were an early innovation, preceding the broad-bandwidth songs of extant katydids. Providing an accurate insight into paleoacoustic ecology, the low-frequency musical song of A. musicus was well-adapted to communication in the lightly cluttered environment of the mid-Jurassic forest produced by coniferous trees and giant ferns, suggesting that reptilian, amphibian, and mammalian insectivores could have also heard A. musicus\&$\#$39; song.

}, keywords = {biological asymmetry, biomechanics, bushcricket, call evolution, Tettigoniidae}, issn = {0027-8424}, doi = {10.1073/pnas.1118372109}, url = {http://www.pnas.org/cgi/doi/10.1073/pnas.1118372109}, author = {Gu, J.-J. and Fernando Montealegre-Zapata and Daniel Robert and Engel, M. S. and Qiao, G.-X. and Ren, D.} }