@article {51509, title = {Calling Songs of Neduba macneilli and N. sierranus (Orthoptera: Tettigoniidae: Decticinae)}, journal = {Journal of the New York Entomological Society}, volume = {83}, year = {1975}, month = {12/1975}, pages = {229-234}, chapter = {229}, abstract = {

The calling songs of decticines remain largely undescribed. Songs of Neduba macneilli and N. sierranus were recorded and analysed. These species have mirror-image tegmina and individual specimens exhibit reversed wing overlap. Wing symmetry and the elaborate pronotum characteristic of this genus are discussed as adaptations which increase the efficiency of sound radiation.

}, author = {Glenn K. Morris and Ronald B. Aiken and Gordon E. Kerr} } @article {50909, title = {Morphological determinants of carrier frequency signal in katydids (Orthoptera): a comparative analysis using biophysical evidence}, journal = {Journal of Evolutionary Biology}, year = {2017}, month = {Apr-09-2018}, abstract = {

Male katydids produce mating calls by stridulation using specialized structures on the forewings. The right wing (RW) bears a scraper connected to a drum-like cell known as the mirror and a left wing (LW) that overlaps the RW and bears a serrated vein on the ventral side, the stridulatory file. Sound is generated with the scraper sweeping across the file, producing vibrations that are amplified by the mirror. Using this sound generator, katydids exploit a range of song carrier frequencies (CF) unsurpassed by any other insect group, with species singing as low as 600 Hz and others as high as 150 kHz. Sound generator size has been shown to scale negatively with CF, but such observations derive from studies based on few species, without phylogenetic control, and/or using only the RW mirror length. We carried out a phylogenetic comparative analysis involving 94 species of katydids to study the relationship between LW and RW components of the sound generator and the CF of the male\&$\#$39;s mating call, while taking into account body size and phylogenetic relationships. The results showed that CF negatively scaled with all morphological measures, but was most strongly related to components of the sound generation system (file, LW and RW mirrors). Interestingly, the LW mirror (reduced and non-functional) predicted CF more accurately than the RW mirror, and body size is not a reliable CF predictor. Mathematical models were verified on known species for predicting CF in species for which sound is unknown (e.g. fossils or museum specimens).

}, doi = {10.1111/jeb.13179}, url = {http://doi.wiley.com/10.1111/jeb.13179}, author = {Fernando Montealegre-Zapata and Ogden, Jessica and Jonsson, Thorin and Soulsbury, Carl D.} } @article {47332, title = {Clinal variation explains taxonomic discrepancy in the calling songs of shield-back katydids (Orthoptera: Tettigoniidae: Tettigoniinae: Aglaothorax)}, journal = {Biological Journal of the Linnean Society}, volume = {101}, year = {2010}, month = {Jan-12-2010}, pages = {910 - 921}, abstract = {

Understanding the relationship between mating trait evolution and speciation requires data from a variety of taxa. I analysed the calling songs of the shield-back katydid genus Aglaothorax, which represents a little-known lineage of acoustic insects. Field-collected males of all described species and most subspecies were recorded under controlled laboratory conditions. Discriminant analysis was 90.5\% successful in separating song types, but the song types thus delineated did not correspond to currently recognized taxa as defined by morphology. The discrepancy is caused by two species, Aglaothorax morsei and Aglaothorax longipennis, the songs of which vary in a cline across the Transverse Ranges and the Los Angeles Basin of southern California. From west to east, pulse rate and duty cycle decrease and interpulse interval increases. Selection for species recognition at a contact zone, sexual selection and interactions between signals and the environment are considered as causes of the cline.

}, keywords = {bioacoustics, California, cline, discriminant analysis, speciation, transverse ranges}, doi = {10.1111/bij.2010.101.issue-410.1111/j.1095-8312.2010.01532.x}, url = {http://doi.wiley.com/10.1111/bij.2010.101.issue-4https://academic.oup.com/biolinnean/article-lookup/doi/10.1111/j.1095-8312.2010.01532.xhttps://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111\%2Fj.1095-8312.2010.01532.x}, author = {Jeffrey A. Cole} } @inbook {40322, title = {Communication and Reproductive Behaviour in North American Jerusalem Crickets (Stenopelmatus) (Orthoptera: Stenopelmatidae)}, booktitle = {The Biology of Wetas, King Crickets and their Allies}, year = {2001}, pages = {351-375}, publisher = {CABI}, organization = {CABI}, chapter = {19}, address = {Wallingford, United Kingdom}, issn = {0851994083}, author = {David B. Weissman} } @article {17122, title = {Tettigoniidae of Australia Disc 1. The Austrosaginae, Zaprochilinae and Phasmodinae}, year = {1993}, publisher = {CSIRO}, address = {Melbourne, Australia}, author = {D. C. F. Rentz} }