Thanatosis and morphological adaptations in the mite genera Lamnacarus and Pygmodispus (Acari, Heterostigmatina, Scutacaridae)
2012
Julia Jagersbacher-Baumann | Ernst Ebermann
In the mite family Scutacaridae, several species belonging to different genera show thanatosis or ‘playing dead’ behaviour. Some of them possess morphological features that are obviously connected with this behaviour. We compared the morphological adaptations to thanatosis in females of Lamnacarus ornatus Balogh and Mahunka, 1963 to those in Pygmodispus (Allodispus) pavidus Ebermann, 1997. To exhibit no point of attack to predators, the mites must retract their legs and cover them with adapted structures. Although the principles of the morphological adaptations to thanatosis are similar in P. (A.) pavidus and L. ornatus, there are differences in their completion.
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