Parapelerinus, Liu, Chun-Xiang & Kang, Le, 2008

Liu, Chun-Xiang & Kang, Le, 2008, Two new genera with descriptions of three new species of Phaneropterinae (Orthoptera: Tettigoniidae) from China, Zootaxa 1830, pp. 47-56 : 48

Genus Parapelerinus gen. nov.

Type species: Parapelerinus ensatus sp. nov., here designated.

Diagnosis: Fastigium verticis narrower than first segment of antenna. Pronotal disc with surface of prozona smooth, without lateral carina. Tegmen slightly widened in middle, with radical sector bifurcated. Anterior coxae armed; anterior tibiae with open tympanum on both sides. Anterior femur with genicular lobe round, median and posterior femora each with a small spine on lower genicular lobe. Male tenth abdominal tergite normal, not produced. Male concealed genitalia with a pair of sclerites. Male subgenital plate without styli. Female ovipositor slender, sword-shaped, with dorsal and ventral margins smooth; apex pointed.

Description: Head ovoid, occiput convex and smooth. Fastigium verticis well-produced, dorsally sulcate, distinctly narrower than first segment of antenna, with apex approximately rounded. Fastigium frontis inversely ovoid; dorsal apex slightly narrower than fastigium verticis, separated by a rather wide gap. Compound eye wide elliptical, obliquely set, greatly bulging, ventral margin extending slightly beyond ventral margin of antennal scrobe (Figs. 1–8). Pronotum slightly widened posteriorly; disc of pronotum with anterior portion slightly convex, posterior third flattened; anterior margin slightly concave, posterior margin obtuse with a middle notch; pronotum with lateral margin rounded and without lateral carinae (Figs. 3, 6). Lateral lobe of pronotum much higher than long; humeral sinus distinct (Figs. 2, 5, 8). Prosternum unarmed. Meso- and metasterna more or less transverse, their lobes rather small, rounded. Anterior coxae armed with a small sharp spine; anterior tibiae dorsally sulcate, with open tympanum on both sides; widened at and abruptly constricted below tympana (Fig. 12). Anterior and median femora with spines on ventro-anterior margin; posterior femur with spines on both ventral margins. Anterior femur with genicular lobe round (Fig. 12), median and posterior femora each with a small spine on the lower genicular lobe (Figs. 14, 16). Anterior tibiae with or without dorsal spines on anterior margin; median tibiae with dorso-posterior spines; posterior tibiae with dorsal spines on both sides. Tegmen slightly translucent, with regular veinlets; costa indistinct; subcostal vein and radial vein joined at base, then separated but closely abutted together till before apical part of tegmen; radical sector bifurcated before middle of tegmen; apex of tegmen rounded. Male stridulatory area (Figs. 18–21) with posterior margin sinuate; male right stridulatory area with distinct triangular mirror (Figs. 19, 21).

Male terminalia (Figs. 24–33). Tenth abdominal tergum normal, slightly concave in middle; apex broad truncated. Epiproct triangular, with apex obtuse. Cerci long, gradually tapering; apex pointed, various. Subgenital plate elongate, with or without emargination at the apex; without styli (Figs. 34, 35). Concealed genitalia with a pair of sclerites, species distinctive (Figs. 28–33).

Female terminalia. Ovipositor sword-shaped, slender, with dorsal and ventral margins smooth; apex pointed (Fig. 31). Subgenital plate distinguished (Fig. 30).

Discussion: The new genus resembles the genus Pelerinus Bolivar in the general features, including head, lateral lobe of pronotum, tympana, and wing, but differs in the structure of genicular lobes of each femur, the shape of the tegmen and hind wing, the shape of female ovipositor, and the male abdominal apex. The male stridulatory apparatus, and the male tenth abdominal apex except for the concealed genitalia, resemble the same structures in Arnobia Stål. This new genus differs from Arnobia in the structure of tympana on fore tibiae and the concealed sclerotized genitalia.

Etymology: The name Parapelerinus is named suggesting its relationship with Pelerinus ; masculine gen- der.

Distribution: China.