Anormalous Liu

Liu, Chun-Xiang, 2011, Phaneroptera Serville and Anormalous gen. nov. (Orthoptera: Tettigoniidae: Phaneropterinae) from China, with description of two new species, Zootaxa 2979, pp. 60-68 : 65-67

Anormalous Liu , gen. nov.

Type species: Anormalous zhangi Liu , sp. nov. Here designated.

Diagnosis: Small-sized (Plate 4a,b). Fastigium verticis dorsally sulcate, with obtuse approximately conical apex; slightly deflexed, narrower than first segment of antennae. Pronotal disc with prozona smooth and metazona flat, without lateral carinae (Plate 4a,b,c). Lateral lobe of pronotum with distinctly shallow humeral sinus (Plate 4a). Tegmen with longitudinal veins developed well, and Rs and cross veins irregular (Plate 4a,b,c). Fore coxae unarmed; fore tibiae with open tympanum on both sides, widened at and gradually tapering behind tympana. Each femur ventrally non-spinous; each femoral genicular lobe round, unarmed. Each tibia dorsally sulcate, fore and mid tibiae dorsally with one apical spur. Male subgenital plate elongate, apical margin with or without notch, without distinct styli (Plate 4a,d,5a,c).

Description: Head ovoid, occiput convex and smooth. Fastigium verticis well-produced, slightly deflexed, dorsally sulcate, distinctly narrower than first segment of antenna, with apex approximately conical. Fastigium frontis inversely ovoid; dorsal apex slightly wider than fastigium verticis, separated by a rather wide gap. Compound eye bead-like, greatly bulging, ventral margin slightly extending beyond ventral margin of antennal scrobe. Antenna thread-like, long and flexible.

PLATE 4, Colour photograph of Anormalous zhangi Liu , sp. nov.. a, photograph of male body, lateral view; b, photograph of male body, dorsal view; c, photograph of male head and tegmen, dorsal view; d, photograph of male abdominal apex, lateral view.

Pronotum. Pronotum saddle-like, slightly widened backwards (Plate 4a,b,c). Pronotal disc with anterior part slightly convex, posterior third flattened; anterior margin slightly concave, posterior margin obtuse with a middle notch; lateral margin rounded and without lateral carinae; middle transverse groove “V”-shaped, distinctly lying behind middle, prozona convex, metazona approximately flattened, slightly tilting (Plate 4b,c). Lateral lobe of pronotum much longer than high; humeral sinus distinctly shallow (Plate 4a). Prosternum unarmed, with posterior margin wide rounded; mesosternum and metasernum with two systematic rounded lobes.

Legs. Fore coxae unarmed; Fore tibiae with open tympanum on both sides, widened at and gradually tapering behind tympana. Each femur ventrally non-spinous; each femoral genicular lobe round, unarmed. Each tibia dorsally sulcate, fore and mid tibiae dorsally with one apical spur, and without other spines. Each tibia ventrally spinous.

Tegmen. Tegmen with longitudinal veins developed well, and Rs and cross veins irregular; tegminal apex rounded (Plate 4a,b).

Male terminalia. Male tenth abdominal normal, central part of dorsal surface slightly concave, apical margin wide truncated. Male epiproct tongue-shaped. Male cerci slender, cylindrical (Plate 4c,5b). Male subgenital plate elongate, apical margin with or without notch, without distinct styli (Plate 4d,5c).

Female unknown.

Discussion: This new genus is distinguished from other genera in the subfamily Phaneropterinae not only by the small size, but also its distinctive tegminal structure. It is not assignable to any present tribes in the subfamily, although it resembles some genera of the tribe Ducetiini based on the lateral lobe of the pronotum bearing a distinctly shallow humeral sinus and the fore tibiae with open tympanum on both sides, widened at and gradually tapering behind tympana, and male subgenital plate without distinct styli.

Etymology: The name suggests that this genus possesses distinctive size, and tegminal structure.

Distribution: China.