Remarks.--The male can be distinguished from the other Trigonidiinae above by the developed stridulatory
apparatus, and foretibia with inner and outer tympana.
Sounds are produced as a result of a phenomenon known as stridulation, and made by stridulatory
organs that consist of specialized setae and antagonistic structures on the integument (Jocque 2005).
They are also known as squeakers due to their ability to make stridulatory
sounds through their pectoral fin spines when handled or disturbed .
Chelicerae without rastellum and stridulatory
bristles, with teeth on promargin (7-10), first basal teeth are complemented with granulation.
A new species of Pseudotettigonia Zeuner (Orthoptera: Tettigoniidae) with an intact stridulatory
field and reexamination of the subfamily Pseudotettigoniinae.
In terrestrial oniscoid isopods, presumable stridulatory
apparatus has been reported.
This is the first description of stridulatory
structures, acoustic signals and associated behaviors in D.
A simple leg-carapace stridulatory
mechanism (Figs 5-7) and bulbus morphology suggest an affinity to Pseudicius Simon, 1885 (cinctus--group sensu Proszynski 2013).
Pronotum almost cylindrical in apical part flat along its entire length (Fig.1c,e,g,h); male stridulatory
organ not protruding beyond the level of posterior tegminal margin; Cerci of male much thinner than second antennal segment very slightly and gradually widened and barely flattened outer margin (Fig.1f).
The Ponerinae can often be recognized by a stridulatory
organ on the dorsal surface of the second acrotergite [20,21].
Copulatory mechanism in Holocnemus pluchei and Pholcus opilionoides, with notes on male cheliceral apophyses and stridulatory
organs in Pholcidae (Araneae).
In addition, the sexual role of the stridulatory
setae of Acanthoscurria suina has no relevance in a sexual context; it may be involved in a defensive function (Perez-Miles et al.