caa a22 4500 463255178 CHVBK 20180405153352.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s00435-007-0043-3 doi (NATIONALLICENCE)springer-10.1007/s00435-007-0043-3 Comparison of auditory sense organs in parasitoid Tachinidae (Diptera) hosted by Tettigoniidae (Orthoptera) and homologous structures in a non-hearing Phoridae (Diptera) [Elektronische Daten] [Reinhard Lakes-Harlan, Kirsten Jacobs, Geoff Allen] The dipteran parasitoids Therobia leonidei and Homotrixa alleni (Tachinidae) use acoustic cues to locate their calling tettigoniid (Ensifera, Orthoptera) hosts. The sexually dimorphic tympanal organs of both fly species are located at the prosternum. For comparison a homologous chordotonal organ in the non-hearing fly Phormia regina, Meigen (Phoridae) is also described. The scolopidial sense organs of the ears have approximately 180 sensory cells in Th. leonidei and 250 cells in H. alleni. Interspecific analysis indicates that the cell number and arrangement might be genus specific in Tachinidae. The mononematic scolopidia, each with one sensory cell, are of different sizes and insert at the tympanal membrane. Large scolopidial units (diameter of sensory cells up to 50μm) extend longitudinally from the centre of the sensory organ towards the ligament, whereas small units (sensory cell diameter up to 10μm) are arranged sequentially within the sensory organ. This arrangement is discussed to be a possible basis for frequency discrimination. The ultrastructure of the scolopidia is similar in the hearing and non-hearing flies. In both groups, the majority of scolopales has a diameter from 2 to 2.9μm, although hearing species have additionally wider scolopales. The homologous chordotonal organ of Ph. regina consists of approximately 55 sensory cells of uniform direction. The data are discussed in comparison to the ears of other Diptera. Springer-Verlag, 2007 Scolopidial organ nationallicence Chordotonal organ nationallicence Diptera nationallicence Bush crickets nationallicence Homotrixa alleni nationallicence Therobia leonidei nationallicence Phormia regina nationallicence Lakes-Harlan Reinhard Institut für Tierphysiologie, Universität Giessen, Wartweg 95, 39392, Giessen, Germany aut Jacobs Kirsten Institut für Zoologie und Anthropologie, AG Neurobiologie, Berliner Str. 28, 37073, Göttingen, Germany aut Allen Geoff School of Agricultural Science/TIAR, University of Tasmania, Private Bag 54, 7001, Hobart, TAS, Australia aut Zoomorphology Springer-Verlag 126/4(2007-12-01), 229-243 0720-213X 126:4<229 2007 126 435 https://doi.org/10.1007/s00435-007-0043-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00435-007-0043-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lakes-Harlan Reinhard Institut für Tierphysiologie, Universität Giessen, Wartweg 95, 39392, Giessen, Germany aut NATIONALLICENCE 700 1- Jacobs Kirsten Institut für Zoologie und Anthropologie, AG Neurobiologie, Berliner Str. 28, 37073, Göttingen, Germany aut NATIONALLICENCE 700 1- Allen Geoff School of Agricultural Science/TIAR, University of Tasmania, Private Bag 54, 7001, Hobart, TAS, Australia aut NATIONALLICENCE 773 0- Zoomorphology Springer-Verlag 126/4(2007-12-01), 229-243 0720-213X 126:4<229 2007 126 435 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer