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About this website:This website focusses on the secret and fascinating world of acoustic communication in planthoppers & leafhoppers (Hemiptera: Auchenorrhyncha) by means of substrate-borne vibration ('drumming') signals. The title 'Insect Drummers' is chosen as a tribute to the Swedish entomologist Frej Ossiannilsson, who was the first to publish on this subject in 1949 with a thesis carrying the same title and with the illustration of a drumming leafhopper on its cover. Biological background:Planthoppers and leafhoppers are a large and diverse group of small-sized (2 - 9 mm) insects, which feed on plants by sucking their juices, and usually go unnoticed to the general public. During mating behaviour males and females of these insects are known to communicate 'silently' by means of species specific vibration signals which are produced by an internal vibration organ ('tymbal') and which are transmitted through the hostplant substrate. However, these substrate vibrations are of very low intensity and not audible to the unaided human ear. They can only be monitored and recorded using special techniques (see below).Aims and objectives:The idea for this website originated in order to make a large collection of recordings of (mostly Dutch) planthopper species accessible to a wider audience. The signals were recorded by a group of Dutch entomologists in Wageningen, The Netherlands. (Read more here) Recordings can be played directly from the website or downloaded as an mp3-file. (For terms of use see below.)Additionally, the website may also serve as a platform for others who want to share their recordings of this group of insects. Therefore, contributions from others with recordings of other species and/or from different geographical areas, will be highly welcome. Those who want to share their recordings are invited to contact the organizer of this website. Finally, we hope that the information on this website may inspire others to start their own investigations of this very exciting but largely unexplored world of 'silent singers'. Recording technique:Vibration signals can be recorded using various types of vibration transducers. The most simple technique involves the use of an ordinary grammophone cartridge connected to a suitable amplifier. The amplified signals can be recorded on tape or directly fed into a laptop or desktop computer with standard soundcard. For more information on techniques and methods see here.Copyright © and terms of use:All recordings are copyrighted by the recordists. Downloading and copying are authorized for personal use only such as playback on a personal computer, portable music player or other device. All other use is forbidden without written permission from the recordist. This website is developed and managed by Peter de Vrijer (for contact see here).Kees den Bieman is greatly acknowledged for his collaboration and valuable comments.

News:December 2016:- Calling signals of following 3 species added:Laodelphax striatellusParadelphacodes paludosaEuides basilineaJanuary 2013: - Official launching of website (first version), presenting male calling signals of 50 species of Dutch planthoppers for playing and downloading.- All comments and suggestions for improvement or additions are welcome.

Copyright © 2013

Last update: 2013.01.16

Insect Drummers

Website on bioacoustic vibration signals of planthoppers & leafhoppers