@article {48158, title = {GRYLLUS CAYENSIS N. SP. (ORTHOPTERA: GRYLLIDAE), A TACITURN WOOD CRICKET EXTIRPATED FROM THE FLORIDA KEYS: SONGS, ECOLOGY AND HYBRIDS}, journal = {The Florida Entomologist}, volume = {84}, year = {2001}, pages = {700-705}, chapter = {700}, abstract = {

Gryllus cayensis, new species, formerly occurred in tropical hammocks in the Florida Keys but has not been found there since 1972, the initial year of aerial spraying of north Key Largo hammocks for mosquito control. It is now known only from pineland in Everglades National Park. Males of G. cayensis make no ordinary calling songs, but some caged males occasionally produce soft 3-4 pulse chirps with a principal frequency of nearly 11 kHz. Males of its sister species, G. fultoni (Alexander), which occurs in north Florida, call with loud 2-4 pulse chirps with a principal frequency of about 4.5 kHz.

}, keywords = {calling song, Gryllus cayensis, Gryllus fultoni, hybridization, phylogeny}, author = {Thomas J. Walker} } @book {47928, title = {Field Guide to Grasshoppers, Katydids and Crickets of the United States}, year = {2004}, pages = {249}, publisher = {Cornell University Press}, organization = {Cornell University Press}, address = {Ithaca}, isbn = {0801489482}, author = {John L. Capinera and Ralph D. Scott and Thomas J. Walker} } @article {47302, title = {Effects of Temperature, Humidity, and Age on Stridulatory Rates in Atlanticus spp. (Orthoptera: Tettigoniidae: Decticinae)}, journal = {Annals of the Entomological Society of America}, volume = {68}, year = {1975}, month = {Mar-05-1976}, pages = {607 - 611}, abstract = {

In Atlanticus gibbosus Scudder the wing-cycle rate during stridulation is a linear function of temperature: y = 1.35 T \— 9.56 (T = \°C; r2 = .99). In A. dorsalis (Burmeister) the tooth-strike rate during stridulation can be described approximately as either a linear or an exponential function of temperature: y = 33.55 T \— 268.32 (r2 = .96) or Ln y = .065 T + 4.523 (r2 = .96). Humidity and aging had statistically significant but ecologically unimportant effects on stridulatory rates. In A. gibbosus the wing-cycle rate at low humidities (25\±5\% RH) was reduced to the extent expected from 0.7\°C evaporative cooling. In A. dorsalis aging beyond ecological life expectancy caused an increase in tooth-strike rate and the occurrence of gaps in the tooth-strike sequence.

}, issn = {0013-8746}, doi = {10.1093/aesa/68.3.607}, url = {http://entnem.ufl.edu/walker/buzz/s104lw75.pdf}, author = {Thomas J. Walker} } @article {47301, title = {Wing movements of calling katydids: fiddling finesse.}, journal = {Science}, volume = {178}, year = {1972}, month = {1972 Oct 13}, pages = {174-6}, abstract = {

Stridulating Uhler\&$\#$39;s katydids produce the most complex song known for insects. Series of four types of sounds are made in stereotyped sequence. Sound-synchronized high-speed photography reveals that each type of sound is produced by a distinctively different wing-movement cycle. The most complex of these cycles includes a two-step closure and a nearly silent close-open movement.

}, issn = {0036-8075}, doi = {10.1126/science.178.4057.174}, author = {Thomas J. Walker and Dew, D} } @article {47296, title = {CALLING SONGS OF ORCHELIMUM MEADOW KATYDIDS (TETTIGONIIDAE): I. MECHANISM, TERMINOLOGY, AND GEOGRAPHIC DISTRIBUTION}, journal = {The Canadian Entomologist}, volume = {108}, year = {1976}, month = {Jan-08-1976}, pages = {785 - 800}, abstract = {A terminology useful in describing conocephaline amplitude modulation patterns is presented in this first part of a three-part study of calling songs in Orchelimum meadow katydids. Geographical distributions are mapped for the 18 species which occur in North America north of Mexico and several substantial range extensions reported, Comparison of stridulatory files indicates two types within the genus, one characterized by more widely spaced teeth near the basal end of the file. Teeth are asymmetrical in accordance with the generation of the loudest song components on wing closure. }, issn = {0008-347X}, doi = {10.4039/Ent108785-8}, url = {http://entnemdept.ufl.edu/walker/ce108p785.pdf}, author = {Glenn K. Morris and Thomas J. Walker} } @article {17247, title = {A New North American Species of Bucrates (Orthoptera: Tettigoniidae: Conocephalinae: Copiphorini)}, journal = {Journal of Orthoptera Research}, volume = {23}, year = {2014}, month = {Jan-07-2014}, pages = {69 - 73}, abstract = {

Bucrates weissmani n.sp. is known from four localities in southern Arizona. It is smaller and more slender than the other four species of Bucrates, making it superficially similar to the Central American copiphorine Caulopsis cuspidata, but more fundamental features refute the notion that it belongs in Caulopsis rather than Bucrates. Four other species of Bucrates are known. Two of these, capitatus (De Geer) and clausus (Scudder), occur in sympatry in Central America and tropical South America; lanista Rehn is known only from southern Brazil; and malivolans (Scudder) is restricted to the southeastern United States. All are easily distinguished morphologically and, for the three for which the songs are known, by their songs. Unlike the two other species of Bucrates for which the habitat is known, B. weissmani occurs on altitudinal islands at the edge of a desert. The calling song of B. weissmani resembles that of numerous species of Neoconocephalus, whereas the songs of B. malivolans and B. capitatus, resemble each other more than either song resembles that of B. weissmani.

}, issn = {1082-6467}, doi = {10.1665/034.023.010110.1665/034.023.0101.s4}, url = {http://www.bioone.org/doi/abs/10.1665/034.023.0101}, author = {Thomas J. Walker} } @article {16624, title = {New World Thermometer Crickets: The Oecanthus rileyi Species Group and a New Species from North America}, journal = {Journal of Orthoptera Research}, volume = {19}, year = {2010}, month = {Jan-12-2010}, pages = {371 - 376}, issn = {1082-6467}, doi = {10.1665/034.019.022710.1665/034.019.0227.s1}, url = {http://www.bioone.org/doi/abs/10.1665/034.019.0227}, author = {Thomas J. Walker and Collins, Nancy} } @article {16473, title = {Systematics and Acoustics of North American Anaxipha (Gryllidae: Trigonidiinae)}, journal = {Journal of Orthoptera Research}, volume = {23}, year = {2014}, month = {Jan-07-2014}, pages = {1 - 38}, issn = {1082-6467}, doi = {10.1665/034.023.010210.1665/034.023.0102.s13}, url = {http://www.bioone.org/doi/abs/10.1665/034.023.0102}, author = {Thomas J. Walker and Funk, David H.} } @article {16471, title = {Effects of temperature on rates in poikilotherm nervous systems: Evidence from the calling songs of meadow katydids (Orthoptera: Tettigoniidae:Orchelimum) and reanalysis of published data}, journal = {Journal of Comparative Physiology ? A}, volume = {101}, year = {1975}, month = {Jan-01-1975}, pages = {57 - 69}, issn = {0340-7594}, doi = {10.1007/BF00660119}, url = {http://link.springer.com/10.1007/BF00660119}, author = {Thomas J. Walker} } @article {16468, title = {The Taxonomy and Calling Songs of United States Tree Crickets (Orthoptera: Gryllidae: Oecanthinae). II. The nigricornis Group of the Genus Oecanthus}, journal = {Annals of the Entomological Society of America}, volume = {56}, year = {1963}, month = {Jan-11-1963}, pages = {772 - 789}, issn = {0013-8746}, doi = {10.1093/aesa/56.6.772}, url = {https://academic.oup.com/aesa/article-lookup/doi/10.1093/aesa/56.6.772https://academic.oup.com/aesa/article/56/6/772/58845/The-Taxonomy-and-Calling-Songs-of-United-States}, author = {Thomas J. Walker} } @article {16467, title = {The Taxonomy and Calling Songs of United States Tree Crickets (Orthoptera: Gryllidae: Oecanthinae). I. The Genus Neoxabea and the niveus and varicornis Groups of the Genus Oecanthus}, journal = {Annals of the Entomological Society of America}, volume = {55}, year = {1962}, month = {Jan-05-1962}, pages = {303 - 322}, issn = {0013-8746}, doi = {10.1093/aesa/55.3.303}, url = {https://academic.oup.com/aesa/article-lookup/doi/10.1093/aesa/55.3.303https://academic.oup.com/aesa/article/55/3/303/138073/The-Taxonomy-and-Calling-Songs-of-United-States}, author = {Thomas J. Walker} }