Account
What the sources say about this taxon, as written.
description · 
Plazi
Description. Pronotum with disc convex, without median carina; completely rounded into paranota. Micropterous; tegmina of male reduced to stridulatory apparatus; tegmina of female reduced to scales, very little overlapping in middle ( Figs 17A–D ). Male. Stridulatory file on underside of left tegmen curved, concave, with ca 75 moderately dense teeth ( Fig. 18A ). Mirror on right tegmen wider than long; hind margin rounded ( Fig. 17B ). Tenth abdominal tergite faintly furrowed in midline; rather short, hardly longer than ninth tergite; apical margin truncate in middle, faintly concave at both sides ( Fig. 18F ). Epiproct small; broadly rounded; with a circular pit at base. Cerci faintly curved at base, in dorsal view otherwise straight, in lateral view slightly sinuate; without tooth but with a distinct internal swelling behind basal third; before apex very faintly swollen ( Figs. 18E–F ). Subgenital plate with narrow median carina; apex roundly excised; styli thin. Titillators separate; curved in middle; apical parts compressed, band-shaped, brownish hyaline; apex rounded; dorsal margin little convex and finely crenulated; basal parts dark brown; very base ovoid and brownish hyaline ( Figs. 18B–D ). Female. Tenth abdominal tergite with central area little prolonged behind but angularly excised in middle. Epiproct triangular with a circular pit on top. Cerci thin, apex pointing. Subgenital plate with central area flattened, lateral areas with little concave surface; lateral margins converging; apex roundly excised; lobes on both sides of excision rounded or in a freeze-dried specimen subacute ( Figs. 18G–J ). Ovipositor with ventral margin little but distinctly concave; apex tapering ( Fig. 18K ). Coloration. Dark brown with marmoration; sternites orange, yellowish or whitish brown. Frons brown marmorated ( Fig. 17E ). Vertex and pronotal disc with fine white median line, on vertex accompanied by a cuneate black spot on both sides. Two other fine white lines from bases of antennae along dorsal margin of eyes to occiput; on dorsal side bordered or not by a narrow black band, on ventral side bordered by a wide black post-ocular band. Pronotum with disc brown; paranota black with broad white ventral margin including a spot suffused with brown ( Figs. 17C–D ). Tegmina of male with disc dark brown, at apex with a white spot; lateral area blackish brown with a white spot at base ( Fig. 17A ). Tegmina of female with hidden part brownish white; exposed part blackish brown with internal and posterior margin on internal side white ( Fig. 17C ). Abdominal tergites dark brown; first three abdominal tergites with black lateral bands bordered by white bands on dorsal and ventral sides. Legs brown with blackish brown spots; hind femur with little distinct fishbone pattern.
etymology · Plazi
Etymology. Named for the internal swelling on the male cercus; from Latin tumid = swollen. Distribution. Mountains of western Montenegro , possibly extending into Bosna . Stridulation ( Fig. 19 ): The single male collected produced echemes with 3–4 syllables. In contrast, males of Pachytrachis frater collected near the Adriatic coast produced monosyllabic songs Heller (1988) . In the new species, the echemes are repeated at intervals of 1–4 s. Stridulation is mainly in the ultrasonic range with a maximum at about 30 kHz (determined by an ultrasonic detector).
xeno-canto