The arachnid order Pseudoscorpiones is characterized by a huge number of different mating strategies. Cheliferidae, for instance, have developed complex mating dances, including the use of the curious ram's horn organs of males. The present study provides a detailed description of the mating behavior of Dactylochelifer latreillii latreillii (Leach, 1817), including first quantitative data for each behavioral unit, based on the analysis of laboratory video captures of individual mating ceremonies. Previous studies on mating in cheliferids have been purely qualitative, including a description of mating in a distinct subspecies of D. latreillii, D. l. septentrionalis Beier, 1932. Qualitatively, our data on Dactylochelifer l. latreillii is roughly consistent with these older observations except for some differences in the vibrating behavior of males.
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