@article {50908, title = {Subspecies-specific song preferences and diverged heterospecific discrimination in females of the bush-cricket Isophya kraussii (Orthoptera: Phaneropterinae)}, journal = {Biological Journal of the Linnean Society}, year = {2017}, month = {Sep-09-2017}, abstract = {

Divergence of the acoustic signals used in mate calling may be an important driver of speciation. Male song may vary accordingly to, in mismatch with or independently of female preferences. Therefore, to estimate the importance of male signal variation between subspecies, female preferences against subspecies-specific signal variants must be tested. We examined the female response probability in the two subspecies of the bush-cricket Isophya kraussii for consubspecific and heterosubspecific male signals, and also for the song of a closely related species (I. camptoxypha), which is sympatric with one, but allopatric to the other subspecies. Performing no-choice playback experiments, we found that females of both subspecies responded to the male song of their own subspecies with significantly higher probability than to heterosubspecific and heterospecific songs. Response specificity for consubspecific vs. heterosubspecific signals was not significantly asymmetric comparing the two subspecies. A significant difference was found, however, in the discrimination of heterospecific calls: females showed stronger discrimination against the song of I. camptoxypha in the subspecies sympatric with that species. Our results are best explained by a tightly covarying, stepwise coevolution of male signals and female preferences.

}, keywords = {acoustic communication, mate recognition, signal evolution, speciation}, issn = {0024-4066}, doi = {10.1093/biolinnean/blx094}, url = {http://academic.oup.com/biolinnean/article/doi/10.1093/biolinnean/blx094/4110201/Subspeciesspecific-song-preferences-and-diverged}, author = {Kirill M{\'a}rk Orci and Ionut Stefan Iorgu} } @article {50819, title = {From an old sound recording to a new species in the genus Horatosphaga~(Orthoptera: Tettigonioidea: Phaneropterinae: Acrometopini)}, journal = {Zootaxa}, volume = {4323}, year = {2017}, month = {Oct-09-2018}, pages = {430-434}, chapter = {430}, abstract = {

Among insects, Orthoptera are a group famous for communicating by sound. This is especially true for bush-crickets (or katydids; Tettigonioidea). All acoustically active species produce sound by rubbing the fore wings (tegmina) against each other, using a stridulatory file situated on the lower side of the left tegmen and a scraper formed by the inner edge of the right tegmen (see e.g., Ragge \& Reynolds 1998). Bush-cricket species of the tribe Acrometopini often have complicated stridulatory files and also complex songs, as shown in a recent study (Hemp et al. 2017). During the preparation of that paper we discovered a sound record of a species of the group taken on 16th March 1972 by the entomologist David Hollis in Angola as part of the multi-disciplinary entomological South Western Africa Expedition (for more details see Lane et al. 2011, Pethers 2016). Hollis (principally a hemipterist) published several papers on different groups of insects (see http://bionames.org/authors/David\%20Hollis; incomplete), including Orthoptera (see Ingrisch \& Willemse 2004). The sound recording was deposited in the British Museum (Natural History) Library of Recorded Insect Sounds, and was later made openly accessible in the BioAcoustica repository (Baker et al. 2015). Hollis had found the animal at light, recorded it on the same day singing on a bush, and brought the specimen (together with two conspecific males) to the Natural History Museum (NHM), London. Here it was later identified as Horatosphaga ?stuhlmanni (Karsch 1896) by D. Ragge, the curator of Orthoptera at the NHM at that time. Under this name (Horatosphaga ?stuhlmanni) the song was described in Hemp et al. 2017. Horatosphaga males are fully winged while females are flightless and plump; sexual dimorphism reaches its extreme form in this group of species. Species of this genus are mostly recorded from open grasslands in savanna habitats up to montane elevations (e.g. H. heteromorpha, Hemp 2013).

}, issn = {1175-5326}, doi = {10.11646/zootaxa.4323.310.11646/zootaxa.4323.3.10}, url = {https://biotaxa.org/Zootaxa/issue/view/zootaxa.4323.3}, author = {Klaus-Gerhard Heller and Edward Baker} } @article {47981, title = {The genus Ectadia (Orthoptera: Phaneropteridae: Phaneropterinae) in East Asia: description of a new species, comparison of its complex song and duetting behavior with that of E. fulva and notes on the biology of E. fulva}, journal = {Journal of Orthoptera Research}, volume = {26}, year = {2017}, month = {Apr-06-2019}, pages = {39 - 51}, abstract = {

The genus Ectadia is an East Asian genus of the tribe Elimaeini (Phaneropterinae) and is known for the complex stridulatory files of its members. The calling song was so far known from only one species, the relatively widespread Ectadia fulva. Here a new species from Yunnan, China, is described, which is morphologically similar to E. fulva except for the stridulatory file. In this character E. fulva deviates strongly from the new species and from all other Ectadia species by its high tooth number. The long lasting song (duration 30 to 60 seconds at 25\°C) of the new species is very complex and differs widely from the much shorter song of E. fulva. Its spectral composition changes during stridulation. In the new species the females respond acoustically during gaps in the final part of the male song, whereas in E. fulva they answer typically after the male song. During mating Ectadia fulva males transfer small spermatophores without spermatophylax. All of its six nymphal stages are cryptically colored. In karyotype the new species being the first studied Ectadia species is similar to the related genera Elimaea and Ducetia (all 2n=29 chromosomes in the male).

}, keywords = {calling song, carrier frequency, male-female duet, stridulatory file, Yunnan}, issn = {1082-6467}, doi = {10.3897/jor.26.1454810.3897}, url = {https://jor.pensoft.net/articles.php?id=14548}, author = {Klaus-Gerhard Heller and Ingrisch, Sigfrid and Warcha{\l}owska-{\'S}liwa, El{\.z}bieta and Chunxiang Liu} } @article {47913, title = {A new, morphologically cryptic bush-cricket discovered on the basis of its song in the Carpathian Mountains (Insecta, Orthoptera, Tettigoniidae)}, journal = {ZooKeys}, volume = {680}, year = {2017}, month = {Feb-06-2018}, pages = {57 - 72}, abstract = {

A new, morphologically cryptic species of phaneropterine bush-crickets is described from the grasslands of the Romanian Eastern Carpathians. Despite the morphological and acoustic similarities with the recently described Isophya nagyi Sz\öv\ényi, Pusk\ás \& Orci, I. bucovinensis sp. n. is characterized by a peculiar male calling song, with faster syllable repetition rate (160\–220 syllables per minute, at 22\–27\°C) and less complex syllable structure (composed of only two elements instead of three observable in I. nagyi). The morphological description of the new species is supplemented with an oscillographic and spectrographic analysis of the male calling song and male\–female pair-forming acoustic duet. An acoustic signal-based identification key is provided for all the presently known species of the Isophya camptoxypha species group, including the new species.

}, keywords = {bioacoustics, Carpathians, Isophya, new species, taxonomy}, issn = {1313-2989}, doi = {10.3897/zookeys.680.12835}, url = {https://zookeys.pensoft.net/articles.php?id=12835}, author = {Ionut Stefan Iorgu and Elena Iulia Iorgu and Gergely Sz{\"o}v{\'e}nyi and Kirill M{\'a}rk Orci} } @article {16644, title = {Distinctive male{\textendash}female acoustic duetting supports the specific status of Isophya fatrensis , a West-Carpathian endemic bush-cricket (Insecta: Orthoptera: Tettigoniidae: Phaneropterinae)}, journal = {Bioacoustics}, year = {2017}, month = {Nov-01-2018}, pages = {1 - 14}, issn = {0952-4622}, doi = {10.1080/09524622.2016.1272005}, url = {https://www.tandfonline.com/doi/full/10.1080/09524622.2016.1272005}, author = {Ionut Stefan Iorgu and Kri{\v s}t{\'\i}n, Anton and Gergely Sz{\"o}v{\'e}nyi and Ka{\v n}uch, Peter and Jar{\v c}u{\v s}ka, Benjam{\'\i}n and Sahlean, Tiberiu Constantin and Elena Iulia Iorgu and Kirill M{\'a}rk Orci} } @article {16411, title = {Annotated checklist of Orthoptera from Kazimzumbwi Forest Reserve, Tanzania with the description of new species and discussion of the biogeographic patterns of threatened species}, journal = {Zootaxa}, volume = {4226}, year = {2017}, month = {Feb-01-2019}, pages = {151}, issn = {1175-5326}, doi = {10.11646/zootaxa.4226.210.11646/zootaxa.4226.2.1}, url = {http://biotaxa.org/Zootaxa/issue/view/zootaxa.4226.2}, author = {Claudia Hemp} }