Account
What the sources say about this taxon, as written.
description · 
Plazi
Diagnostic description.— The smallest species of the genus; general characteristics as described above; wings in both sexes hardly reaching apices of hind femora or slightly surpassing them ( Fig. 34 A). Fastigium of vertex 2.5-3 times as long as eye diameter, narrowly rounded apically, with distinct dorsal furrow dorsally; ventral keel of fastigium somewhat undulant ( Figs. 35 A-C). Male stridulatory file weakly curved, 0.9 mm long, 89 μm wide, with 284 closely spaced and relatively very wide teeth ( Fig. 51 C); stridulatory area on male without secondary venation; mirror square; secondary veinlet next to AA 1 present, divergent from AA 1 . Ventral anterior spines of hind femora as long as width of hind femur below knee ( Fig. 35 K). Tenth tergite of male with two somewhat divergent, wide lobes; female 10th tergite with lobes much narrower, pointed; male cercus straight, basal internal spine nearly straight, distinctly constricted apically ( Fig. 34 B); female cercus simple, elongately conical, somewhat curved. Male titillators needle-like, sinusoidal ( Fig. 34 C). Ovipositor short, sickle-shaped, about as long as half of hind femur (ratio ovipositor/hind femur 0.50-0.60) ( Fig. 34 A). Coloration .— General coloration light green; face creamy white; fastigium reddish-brown; clypeus and mandibles dark purple; metazona of pronotum in male with large, brown, usually heart-shaped spot; venation of tegmina and posterior edge of tegmina contrastingly yellow. Measurements .— Table 27 . Bioacoustics.— The call of P. alas is low Q and low duty. Most of the energy is probably allocated in the ultrasonic frequencies, which unfortunately I was unable to record. The audible portion of the call consists of irregularly produced, paired lisps, with each lisp lasting 8.2- 14.5 ms (n=20) at 28°C ( Fig. 58 G). The interval between the lisps ranged from 168 to 763 ms. The audible portion of the call does not have a clearly defined frequency peak, although frequencies between 9-12 kHz seem to have more energy.