01440nas a2200133   4500008004100000245011900041210006900160300001200229490000800241520097300249100002201222700002101244856004101265       1996                        eng d00aSound production and cannibalism in larvae of the pine-sawyer beetle Monochamus sutor L.(Coleoptera: Cerambycidae)0 aSound production and cannibalism in larvae of the pinesawyer bee  a29–330 v1173 a<p>One-year old larvae of the pine-sawyer beetle, Monochamus sutor L. (Coleoptera: Ceram&shy; bycidae), produced regular, chirping sounds, easily heard up to 10 meters away. Larvae were positioned within their hibernation tunnel in sapwood of recently fire-killed spruce and pine trees. Their heads were directed outwards, and the sound was probably produced by the scratching of their mandibles against the bark. Since the larvae produce this sound in spite of the risk of attracting parasites and predators such as wood-peckers, this behaviour most likely has an adaptive value. We suggest that sound production helps a larva to secure resources around its hibernation tunnel for its own development by keeping away other potentially competitive larvae. That the larvae are cannibalistic was demonstrated during a trial perfor&shy; med in petri dishes filled with sawdust. Any larva ignoring the sound signal could therefore face a real threat of being killed.</p>
1 aVictorsson, Jonas1 aWikars, Lars-Ove  uhttps://bio.acousti.ca/it/node/4771301706nas a2200169   4500008004100000022001400041245012600055210006900181260001600250300001400266490000700280520102500287100001701312700001901329700001801348856017001366       1972                        eng d  a0013-874600aStridulatory Apparatus and Analysis of the Acoustics of Four Species of the Subfamily Lamiinae (Coleoptera: Cerambycidae)0 aStridulatory Apparatus and Analysis of the Acoustics of Four Spe  cMar-05-1973  a644 - 6470 v653 a<p>Investigation of 4 species of the subfamily Lamiinae&mdash;Tylocerina nodosus (F.), Neacanthocinus obsoletus (Olivier), Monochamus titillator (F.), and Plectrodera scalator (F.)&mdash;shows that both sexes of each species produce a stridulatory sound when disturbed. The stridulatory apparatus of each species consists of a plectral ridge on the inner surface of the posterior margin of the pronotum and a pars stridens on the dorsal surface of the mesocutellum of the mesothorax. Scanning electron micrographs show the plectral ridges to be smooth, while the pars stridens consists of regularly spaced striae with height, width, and spacing measurements characteristic for each species. Audiospectrographic analysis of the beetle-produced sounds reveals definite frequency bands, pulse lengths, and relative intensities for each species. Investigation of behavioral aspects of the sounds indicates that they are not a necessary component of courtship and mating behavior, but they may serve as an alarm signal.</p>
1 aFinn, W., E.1 aMastro, V., C.1 aPayne, T., L.  uhttps://academic.oup.com/aesa/article-lookup/doi/10.1093/aesa/65.3.644https://academic.oup.com/aesa/article/65/3/644/30148/Stridulatory-Apparatus-and-Analysis-of-the