@article {52747, title = {Sound production of two endemic Oedipodinae grasshoppers from the Iberian Peninsula: Jacobsiella imitans and Leptopternis candidus lusitanicus (Orthoptera: Acrididae)}, journal = {Italian Journal of Zoology}, volume = {77}, year = {2010}, month = {Sep-12-2010}, pages = {443 - 452}, abstract = {

In this study, which was conducted with captive specimens kept in wooden cages and separated by sex, the sounds produced by Jacobsiella imitans (Brunner, 1882) and Leptopternis candidus lusitanicus (Ebner, 1941) (Orthoptera, Acrididae) are described. Sounds were recorded with a digital audio tape recorder; the signal was digitized and then analysed with the Avisoft\® software. Two types of sound, both produced by stridulation, were recorded in these species: an interaction song, produced when specimens are disturbed by others, and a courtship song, emitted by males when mounting another individual in trying to copulate. In both species, females are mute. Data concerning the time and frequency domains of these sounds are presented. The behaviour observed by both species in nature and that displayed when interacting with other individuals and during courtship are described. The role of song as an isolation mechanism is discussed.

}, keywords = {behaviour, Jacobsiella, Leptopternis, Oedipodinae, Orthoptera, sound production}, issn = {1125-0003}, doi = {10.1080/11250000903457830}, url = {http://www.tandfonline.com/doi/abs/10.1080/11250000903457830}, author = {Larrosa, E. and M. Garcia and Presa, J. J.} } @article {52731, title = {Two new katydids of the genus Melanonotus from Costa Rica with Comments on their life history strategies (Tettigoniidae pseudophyllinae)}, journal = {Entomological News}, volume = {86}, year = {1975}, pages = {129-140}, chapter = {129}, abstract = {

Two new katydids are described from Costa Rica extending the known range of\ Melanonotus\ northward. The contrast in life history and morphology between primary forest katydids and secondary growth or temperate species is discussed. The absence of regular nightly stridulation and morphological differences such as the extremely long antennae of the two\ Melanonotus\ species and other primary forest epiphyllic katydids are suggested as adaptations to bat predation.

}, keywords = {bat predation, behaviour, Costa Rica, Melanonotus, Pseudophyllinae, Tettigoniidae}, author = {D. C. F. Rentz} } @article {52581, title = {Antennal sensilla of the armoured ground cricket, Eugaster powysi Kirby, 1891 (Orthoptera, Tettigoniidae, Hetrodinae)}, journal = {Bulletin de l{\textquoteright}Institut Scientifique, Rabat, Section Sciences de la Vie}, volume = {39}, year = {2017}, pages = {1-17}, chapter = {1}, abstract = {

Sensilla on the antennae of the adult armoured ground cricket, Eugaster powysi, were studied using scanning electron microscopy to determine the sensilla morphology and their possible chemo- and mechanoreceptive functions for food detection. Twelve types or subtypes occur in males and thirteen in females: aporous sensilla chaetica (62.6 \% of total sensilla in males, 63.5\% in females) with a tactile mechanoreceptive function; uniporous sensilla chaetica of three subtypes (12.5-12.7\%) with a contact chemoreceptive function; multiporous sensilla trichodea (5.6-7.9\%); multiporous sensilla basiconica of three subtypes (13.1-13.9\%); multiporous sensilla coeloconica (0.8-0.9\%), all multiporous sensilla being olfactory receptors; aporous sensilla coeloconica (2.2\%) and aporous sensilla coelocapitula (0.1\% in female) with a possible thermo- hygroreceptive function; aporous B\öhm sensilla (0.4-0.5\%) and sensilla campaniformia (0.5-0.6\%) which are proprioceptors. These results are related to the behaviour of Eugaster and compared with those obtained in other Orthoptera, Mantodea and Blattodea.

}, keywords = {antenna, behaviour, Eugaster, sensilla, Tettigoniidae}, author = {Michel J. Faucheux} }