Bioacoustics of Striduloselymbria

Diagnosis. Striduloselymbria gen. nov. is the third known genus of the Selymbriini . The new genus can be quickly distinguished by the presence of the stridulatory apparatus on the dorsolateral mesonotum, a structure unique within the genera currently assigned to the tribe. In addition, the new genus can be distinguished from Prosotettix sphecoidea Jacobi, 1907 by the smaller body size (wingspan about 39mm ), the extremely triangular anterior projection of the head and postclypeus, the very large, hooked secondary fore femoral spine that is perpendicular to the femur long axis, the fore wing radial cell is not expanded in the middle, fore wing ulnar cells 1–3 are about the same width, fore wing basal cell about 3.23 times longer than broad, the fore wing cubitus anterior is not highly arched, the dorsum of abdominal tergite 1 is longer than the dorsum of abdominal tergite 2, and the uncus is sinuate in the only known representative of the genus. Members of the genus Selymbria can be distinguished by the eyes being wider than the lateral angles of the pronotal collar, the anterior margin of the supra-antennal plate is angled anteriorly rather than transversely, the supra-antennal plate reaches almost to the eye, the fore wing radial cell is not expanded in the middle, fore wing basal cell is between 3.20–3.50 times longer than broad, the fore wing cubitus anterior is not highly arched, hindwing cubital cell 2 is almost as wide as distal cubital cell 1, the male opercula reach or extend beyond the posterior opening of and cover the tympanal cavity, the recurved margin of the posterior timbal cavity, abdominal epipleurites are reflexed to the ventral surface, upper pygofer lobes that extend from the pygofer, a long, generally curving uncus, and the aedeagus expands distally with large distal lobes.