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 [1].
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.