@article {17245, title = {Ultraljud hos svenska v{\r a}rtbitare}, journal = {Entomologisk Tidskrift}, volume = {102}, year = {1981}, pages = {27-41}, chapter = {27}, abstract = {

Of the 10 Swedish species of bush crickets 9 stridulate with their elytra. The author recorded the songs of these species in their natural habitats, using instrumentation tape recorder and ultrasonic detectors. Song rhythm patterms and frequencies are presented for each species with comments on the ultrasonic components, audibility as a distance in the field with and without detectors etc. For 8 of the 9 stridulating species detectors seem to be necessary for efficient survey work and population studies in the field.

In 5 species differences found between the songs used in daytime and at night were analysed and discussed. The most important differences were found in species singing close to the ground (Platycleis denticulata, Metrioptera brachyptera, M. bicolor), whereas no corresponding difference was found in species singing from trees or high busghes (Tettigonia viridissima, Leptophyes punctatissima). The very intense songs heard at night have distinct and discrete tooth-pulses, while corresponding songs in daytime contain continuous sound waves and less conspicuous tooth-pulses in the file pulse-train. It is suggested taht this phenomenon could be something more than a mere influence of temperature on song rhythym. They could be adaptations to more efficient spread of sound waves under the acoustical conditions taht prevail above ground at night.

}, author = {Ingemar Ahl{\'e}n} } @article {17244, title = {L{\"o}vv{\r a}rtbitarens Leptophyes punctatissima s{\r a}ng}, journal = {Fauna och flora}, volume = {75}, year = {1980}, month = {December 1980}, pages = {265-268}, chapter = {265}, author = {Ingemar Ahl{\'e}n and Hans J{\o}rgen Degn} } @article {12075, title = {Speckled Bush Cricket Data Logger - Project Report}, year = {2015}, abstract = {

This report summarises work carried out on the Speckled Bush Cricket data logger project by Wil Bennett and Dave Chesmore at the University of York and Ed Baker at the Natural History Museum, who together designed and constructed - at the time of writing - a total of ten data logging devices to monitor the presence of Leptophyes punctatissima and other environmental variables such as temperature and humidity. This document summarises the capabilities and functionality of these devices, and comprehensively documents correct operational procedure for deploying the devices in the field.

}, doi = {10.6084/m9.figshare.1430094}, author = {Bennett, Wil and E. David Chesmore and Edward Baker} } @article {11865, title = {Acoustic behaviour of both sexes of the speckled bush cricket Leptophyes punctatissima}, journal = {Physiological Entomology}, volume = {1}, year = {1976}, month = {Jan-03-1976}, pages = {21 - 25}, abstract = {

As in other phaneropterine bush-crickets, both male and female Leptophyes punctatissima can stridulate. Stridulation in the female, which had previously been overlooked, occurs in response to the male call. The main frequency of the very brief chirps is around 40 kHz. The male is stimulated to chirp more frequently by receiving response chirps from the female. Unlike most Tettigoniidae the male moves toward the female and is thus dependant on her response signal. Communication can occur over distances of at least 5 m. Some structures involved in stridulation in the female differ from that described in other phaneropterines. The insects used in these experiments were all reared in the laboratory from wild-caught parents. Between forty and fifty different insects were used at various times for laboratory studies on the song, and four different males and three females were used on the field communication experiments. The sexes were kept separate from the moult to adult or for at least 10 days before experiments.

}, issn = {0307-6962}, doi = {10.1111/j.1365-3032.1976.tb00882.x}, url = {http://doi.wiley.com/10.1111/j.1365-3032.1976.tb00882.x}, author = {Hartley, J. C. and Robinson, D. J.} }