@article {53378, title = {A new species and a new record of genus Hexacentrus Serville, 1831 (Orthoptera: Tettigoniidae: Hexacentrinae) from India}, journal = {Zootaxa}, volume = {4526}, year = {2018}, month = {Mar-12-2018}, pages = {547}, abstract = {

The paper deals with a new record Hexacentrus japonicus Karny, 1907 and a new species Hexacentrus bifurcata sp. nov. from India. Necessary and important illustrations with SEM images of stridulatory file of Hexacentrus japonicus and Hexacentrus bifurcata sp. nov. are provided. A key to the Indian species of Hexacentrus and morphometric ranges of all the species have also been included. Type specimens have been preserved for further investigation in Zoology Department, Aligarh Muslim University (ZDAMU).

}, keywords = {Hexacentrinae, India, new species, Orthoptera, Tettigoniidae}, issn = {1175-5326}, doi = {10.11646/Zootaxa.4526.410.11646/zootaxa.4526.4.7}, url = {https://biotaxa.org/Zootaxa/issue/view/Zootaxa.4526.4https://biotaxa.org/Zootaxa/article/view/zootaxa.4526.4.7} } @article {52768, title = {Extremely divergent song types in the genus Aerotegmina Hemp (Orthoptera: Tettigoniidae: Hexacentrinae) and the description of a new species from the Eastern Arc Mountains of Tanzania (East Africa)}, journal = {Bioacoustics}, year = {2018}, month = {Feb-04-2018}, pages = {1 - 17}, abstract = {

The genus Aerotegmina comprises a group of African canopy-dwelling, predatory bushcrickets (katydids) that is known for its inflated tegmina and the unusually loud and low-frequency calling song of its type species. Here, we describe the songs of another two species of the genus which are much larger than the type species and have an even lower peak frequency. In addition, small and large species differ in song structure. While the type species and closely related forms have a broad banded, multi-peak song with strong components in the audio and ultrasonic range, the species treated here have an extremely narrow banded, resonant song with a carrier frequency of 2 kHz. With Q-values above 100 these sounds belong to the purest songs ever recorded in Orthoptera. Besides describing songs, stridulatory organs and a new species we discuss the possible functions of the song type. A key to the species of Aerotegmina is provided.

}, keywords = {Aerotegmina, bioacoustics, Eastern Arc Mountains, Orthoptera, resonant song}, issn = {0952-4622}, doi = {10.1080/09524622.2018.1443284}, url = {https://www.tandfonline.com/doi/full/10.1080/09524622.2018.1443284https://www.tandfonline.com/doi/pdf/10.1080/09524622.2018.1443284}, author = {Klaus-Gerhard Heller and Claudia Hemp} } @article {47842, title = {Warm-Up and Stridulation in the Buschcricket, Hexacentrus Unicolor Serville (Orthoptera, Conocephalidae, Listroscelidinae)}, journal = {Journal of Experimental Biology}, volume = {126}, year = {1986}, pages = {97-109}, chapter = {97}, abstract = {

The morphology of the stridulatory organ of the tropical bushcricket Hexacentrus unicolor is described and an investigation is made of stridulatory movements and muscle activities.

\ \ \  1. The song is produced by extremely fast stridulatory movements (320\–415 Hz), during which, while closing the wings, a highly specialized file is brought into contact with the plectrum to produce sound. The muscles are activated with the same frequency, i.e. they work synchronously (neurogenic).

\ \ \  2. A few minutes before the stridulation starts, the muscles are activated in a similar rhythm to that pertaining during singing (pattern of spike trains and pauses). As a result, the thorax temperature increases considerably (up to approximately 37\°C, 13\–15\°C higher than the ambient temperature). The frequency of the muscle potentials within the spike trains rises during warm-up. There are, however, indications that no phase displacement of antagonistically working muscles takes place.

}, author = {Klaus-Gerhard Heller} } @article {47335, title = {The genus Aerotegmina (Orthoptera, Tettigoniidae, Hexacentrinae): chromosomes, morphological relations, phylogeographical patterns and description of a new species}, journal = {Organisms Diversity \& Evolution}, volume = {13}, year = {2013}, month = {Jan-12-2013}, pages = {521 - 530}, abstract = {

The genus Aerotegmina Hemp is common on East African mountains. Two species are known and a third, A. taitensis n. sp., is described in this paper. A. kilimandjarica Hemp is widespread while A. shengenae Hemp is endemic to the South Pare Mountains and A. taitensis n. sp. is known only from the Taita Hills. Morphologically, and from their song, A. shengenae and A. taitensis n. sp. are closely related. In chromosome number A. kilimandjarica (2n\ =\ 33) differs clearly from A. shengenae (2n\ =\ 27). Data presented on other flightless Orthoptera suggest that the South Pare Mountains and the Taita Hills, both belonging to the geologically old mountain chain of the Eastern Arc, show a faunistic similarity not shared by any other mountain range in the area. The mechanisms that led to this phylogeographic pattern in flightless Orthoptera in the Eastern Arc Mountains of northern Tanzania and southern Kenya and the inland volcanoes are discussed. A key to the three Aerotegmina species is presented, as well as bioacoustical data of all species compared to the phaneropterine species Euryastes jagoi.

}, keywords = {Aerotegmina, bioacoustics, chromosomes, East Africa, Eastern Arc Mountains, Euryastes, Hexacentrinae, morphology, new species, Orthoptera, phylogeography, Taita Hills}, issn = {1439-6092}, doi = {10.1007/s13127-013-0133-7}, url = {http://link.springer.com/10.1007/s13127-013-0133-7}, author = {Claudia Hemp and Klaus-Gerhard Heller and Warchalowska-Sliwa, Elzbieta and Hemp, Andreas} } @article {15290, title = {Taxonomic, bioacoustic and faunistic data on a collection of Tettigonioidea from Eastern Congo (Insecta: Orthoptera)}, journal = {Zootaxa}, volume = {3785}, year = {2014}, month = {Apr-04-2014}, pages = {343}, issn = {1175-5326}, doi = {10.11646/zootaxa.3785.310.11646/zootaxa.3785.3.2}, url = {http://biotaxa.org/Zootaxa/issue/view/zootaxa.3785.3}, author = {Klaus-Gerhard Heller and Claudia Hemp and Chunxiang Liu and Volleth, Marianne} }