@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 {50735, title = {A new genus and other new species of Agraeciini from the Eastern Arc Mountains, East Africa (Orthoptera: Tettigoniidae; Conocephalinae; Agraeciini)}, journal = {Zootaxa}, volume = {4311}, year = {2017}, month = {Oct-08-2018}, pages = {1}, abstract = {

The genus Dendrobia n. gen. is erected to include D. amaniensis n. sp. from the East Usambara Mountains as type species. A second species in this genus, D. octopuncata n. sp., is described from the Udzungwa Mountains of Tanzania. Dendrobia n. gen. is a canopy dweller found only high up on trees in closed submontane and montane forest. The peak frequency of its song is lower than in all other known African Agraeciini, correlating with the large resonant areas in the tegmina. Two new Afroanthracites species, A. ngologolo n. sp. and A. nguru n. sp. are described from the Eastern Arc Mountains in Tanzania. These species are dwellers of understory vegetation in closed forest in the Udzungwa and Nguru Mountains respectively.

}, keywords = {bioacoustics, East Africa, Eastern Arc Mountains, new genus, new species, Orthoptera}, issn = {1175-5326}, doi = {10.11646/zootaxa.4311.110.11646/zootaxa.4311.1.1}, url = {https://biotaxa.org/Zootaxa/issue/view/zootaxa.4311.1https://biotaxa.org/Zootaxa/article/view/zootaxa.4311.1.1https://biotaxa.org/Zootaxa/article/viewFile/32748/29080https://biotaxa.org/Zootaxa/article/viewFile/32748/29080}, author = {Claudia Hemp and Ingrisch, Sigfrid and Klaus-Gerhard Heller} } @article {50717, title = {THE INFLUENCE OF FIRE ON SALTATORIA DIVERSITY IN COASTAL HABITATS NEAR PANGANI, TANZANIA (EAST AFRICA)}, journal = {Ecotropica}, volume = {11}, year = {2005}, pages = {53-61}, chapter = {53}, abstract = {

In burnt coastal grasslands, fire-disturbed forest remnants, and undisturbed coastal forests of the Pangani area (Tanzania) 61 Saltatoria species were recorded. Comparing open-land habitats with forest and forest edge habitats, diver- sity rises in open-land habitats, as nearly 60\% of the recorded species were found within grasslands. However, the share of endemic and near-endemic species decreases, as only 5\% of the species occurring in open-land habitats were endemics, 14\% are distributed throughout East Africa, and the majority (81\%) are widespread forms. Forest and forest edge habitats, on the other hand, had 60\% endemic species, 32\% species restricted to East Africa, and only 8\% widespread Saltatoria. The majority of the coastal endemics are highly endangered by the ongoing destruction of indigenous forest. Tangana asymmetrica was one of the few coastal endemics that also occurred in fire-influenced forest remnants, while most other forest species were exclusively found in closed undisturbed forest communities of the Gendagenda forest reserve. The new record of Parepistaurus pygmaeus in the Gendagenda reserve offers an explanation of the hitherto disjunct distribution of this flightless species.

}, keywords = {biodiversity, conservation, endemism, fire influence, indigenous tropical lowland forest, Orthoptera, Saltatoria, Tanzania, tropical coastal grasslands}, author = {Claudia Hemp} } @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 {47334, title = {Biogeography, ecology, acoustics and chromosomes of East African Eurycorypha St{\r a}l species (Orthoptera, Phaneropterinae) with the description of new species}, journal = {Organisms Diversity \& Evolution}, volume = {13}, year = {2013}, month = {Jan-09-2013}, pages = {373 - 395}, abstract = {

Although Eurycorypha is the most species-rich Phaneropterinae genus in Africa, little is known about the distribution and the ecology of the species. In this study data on distribution, ecology, song and on chromosomes of some East African species are provided. The nymphs of some species are shown, famous for their ant-like appearance and behaviour. The male of E. punctipennis Chopard and three species of Eurycorypha are newly described. These are E. resonans n. sp. and E. combretoides n. sp. occurring in different habitats on Mount Kilimanjaro, and E. conclusa n. sp from forest habitats along the Tanzanian coast. Bioacoustically, the four recorded species are unusually divers, presenting non-resonant and resonant songs. As four Eurycorypha species occur syntopically on geological young Mount Kilimanjaro, the biogeographical pattern and possible speciation mechanisms in the genus Eurycorypha are discussed in context of the climatical history of eastern Africa.

}, keywords = {bioacoustics, Biogeography, chromosomes, ecology, Mount Kilimanjaro, new species, Orthoptera, Phaneropterinae, speciation, Tanzania}, issn = {1439-6092}, doi = {10.1007/s13127-012-0123-1}, url = {http://link.springer.com/10.1007/s13127-012-0123-1}, author = {Claudia Hemp and Klaus-Gerhard Heller and Warcha{\l}owska-{\'S}liwa, El{\.z}bieta and Grzywacz, Beata and Hemp, Andreas} }