01368nas a2200157 4500008004100000022001400041245008000055210006900135260001600204300001200220490000800232520077800240100003201018700002201050856013801072 1987 eng d a0036-807500aBat Predation and Its Influence on Calling Behavior in Neotropical Katydids0 aBat Predation and Its Influence on Calling Behavior in Neotropic cFeb-10-1987 a64 - 670 v2383 a

Insectivorous bats have influenced the development of antipredator behavior in moths, green lacewings, crickets, and mantids; until recently, such adaptations were unknown in katydids. Foliage-gleaning bats in Panama can use the female-attracting, airborne calling songs of nocturnal katydids to locate prey. They also feed heavily on these insects. Katydid species sympatric with these bats exhibit markedly reduced calling song duty cycles. Males supplement shortened songs with complex, species-specific tremulations that generate vibrations that are inaudible to bats but reach conspecific females through a shared plant substrate. Female katydids do not call audibly but are also preyed on in large numbers, perhaps as a result of moving toward calling males.

1 aBelwood, Jacqueline, Janine1 aMorris, Glenn, K. uhttp://www.sciencemag.org/cgi/doi/10.1126/science.238.4823.64https://syndication.highwire.org/content/doi/10.1126/science.238.4823.6401488nas a2200145 4500008004100000022001300041245010600054210006900160260001600229300000800245520098200253100002901235700002201264856005601286 1999 eng d a1082646700aSongs and Systematics of Some Tettigoniidae from Colombia and Ecuador I. Pseudophyllinae (Orthoptera)0 aSongs and Systematics of Some Tettigoniidae from Colombia and Ec cJan-11-1999 a1633 a

This paper provides taxonomic description for 16 species of pseudophylline katydid. Analysis of the calling songs is given for all but one. Among 14 genera Mystron and Stetharasa are new. Eleven new species are described from four Provinces in Ecuador: Morona Santiago, Pichincha, Los Rios and Napo, and two southern Departamentos of Colombia: Valle del Cauca and Risaralda. The diverse species-specific calling songs of Pseudophyllinae are comprised of either transient or sinusoidal pulses. The carrier frequency song spectrum occurs in conjunction with these two pulse types, as either a band (transient pulse, low Q) or a single dominant narrow-peak carrier (sinusoidal, high Q). And stridulatory file morphology differs accordingly. Principal carriers in the songs of the species described here range from the audio to the low ultrasonic (20-30 kHz); overall among pseudophylline species whose songs are known (n = 65), a majority (75%) incorporate high Q pulses.

1 aZ., Fernando, Montealegr1 aMorris, Glenn, K. uhttp://www.jstor.org/stable/3503439?origin=crossref02113nas a2200145 4500008004100000245013500041210006900176260001600245520156700261100003301828700001901861700002001880700002401900856004301924 2017 eng d00aMorphological determinants of carrier frequency signal in katydids (Orthoptera): a comparative analysis using biophysical evidence0 aMorphological determinants of carrier frequency signal in katydi cApr-09-20183 a

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'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).

1 aMontealegre-Zapata, Fernando1 aOgden, Jessica1 aJonsson, Thorin1 aSoulsbury, Carl, D. uhttp://doi.wiley.com/10.1111/jeb.13179