02287nas a2200289   4500008004100000022001300041245011100054210006900165260001600234300001400250490000800264520141900272653001701691653001801708653002501726653001401751653001501765653001501780653001501795653001601810653001901826100002601845700002801871700001901899700002601918856005301944       2006                        eng d  a1210575900aBioacoustics and systematics of the Poecilimon heroicus-group (Orthoptera: Phaneropteridae: Barbitistinae)0 aBioacoustics and systematics of the Poecilimon heroicusgroup Ort  cFeb-10-2006  a853 - 8650 v1033 a<p>The species of the Poecilimon heroicus-group occur around the Caucasus (from north-eastern Turkey to south-eastern Ukraine). We describe the diagnostic morphological characters of all these species and the male calling song of three of the four spe- cies. Based on this data the following phylogenetic relationship is derived (P. tschorochensis (P. tricuspis (P. heroicus, P. bifenes- tratus))). Within the genus Poecilimon, the species can be recognised by a relatively wide pronotum and large tegmina. In one species, Poecilimon tschorochensis Adelung, 1907 (type species of the monotypic genus Artvinia Karabag, 1962, syn. n.; P. rammei Miram, 1938, syn. n.), the tegmina are very large and the song has unusually low spectral components. This species produced di- syllabic echemes at intervals of about 10 s. In two other species of the group, P. heroicus and P. bifenestratus, the calling song of males consists of an uninterrupted dense sequence of long syllables (syllable duration around 0.5 s; ca. 1 syllable/s at 20&deg;C). In these species the auditory spiracles are reduced in size in both sexes, and the females have extremely small tegmina and are unable to respond to the male song acoustically, which would be typical for Phaneropteridae. The change in communication from acoustically responding to mute females has not been previously documented within a group of closely related species.</p>
10abioacoustics10aBush-crickets10acommunication system10aevolution10amorphology10aOrthoptera10aPoecilimon10asystematics10aTettigonioidea1 aHELLER, KLAUS-GERHARD1 aKORSUNOVSKAYA, Olga, S.1 aSevgili, Hasan1 aZHANTIEV, Roustem, D.  uhttp://www.eje.cz/doi/10.14411/eje.2006.116.html