Yangtettix Kasalo & Skejo, 2025

Damien, Niko Kasalo, Laure, Damien Brouste, Christophe, Laure Desutter-Grandcolas, Domagoj, Christophe Hervé, Josip, Domagoj Bogić & Skejo, Josip, 2025, Atlas of New Caledonian Tetrigidae with preliminary suprageneric classification of Batrachideinae, Zoosystema 47 (18), pp. 327-397 : 335-338

Genus Yangtettix Kasalo & Skejo , n. gen.

urn:lsid:zoobank.org:act:59EAA00E-DAF5-44CD-A373-3AB2BD5F868E

TYPE SPECIES. — Yangtettix burwelli Kasalo & Skejo , n. sp.

COMPOSITION. — Yangtettix burwelli Kasalo & Skejo , n. sp., Yangtettix grimbacheri Kasalo & Skejo , n. sp.

DISTRIBUTION. — Southern New Caledonia.

ETYMOLOGY. — The name refers to “yang”, the active or positive principle from Chinese philosophy. It represents the high degree of difference between Yangtettix Kasalo & Skejo , n. gen. and Yintettix Kasalo & Skejo , n. gen. but also the importance of both genera for understanding the biogeography of New Caledonia. The suffix -tettix refers to the Ancient Greek word for “grasshopper”, making a noun of masculine gender.

DIAGNOSIS. — Vertex rectangular, not raised significantly above or in front of eyes. Anterior margin of pronotum in form of spine. Median carina slightly elevated throughout its length, pronotum bulging a little. Legs moderately tuberculated. Infrascapular area long and curved.

DESCRIPTION

Frontal costa bifurcation in ventral third of eye height.Scutellum widening ventrad, as wide as antennal groove at widest part. Paired ocelli at ventral quarter of eye height. Dorsal margin of antennal groove a little below level of ventral margin of eye. Antennae filiform. Vertex around 1.5 times wider than eye in anterior view. In anterior view, base of vertex a little above dorsal margin of eyes; vertex flat. In dorsal view, part of vertex covered by pronotum. Medial carina visible in anterior quarter between eyes. Lateral carinae L-shaped, visible in anterior quarter between eyes. Anterior margin of pronotum triangular. Prozonal carinae parallel. Median carina distinct and elevated throughout its length. Lateral lobes projecting

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outwards, rectangular, pointed backward. Ventral sinus blunt but narrow. Tegminal sinus absent. Infrascapular area wide above middle femur, barely narrowing towards pronotal apex; distinctly semi-circular. Humeral angles blunt. Posthumeral spots absent. Pronotal apex wide.Tegmina and wings absent. Dorsal margin of anterior femur convex; ventral margin straight with one small tooth. Anterior tibia straight and smooth. First segment of anterior tarsus shorter than second segment (minus claws), pulvilli indistinct. Dorsal margin of middle femur wavy; ventral margin with three wide protrusions. Middle tibia straight and smooth. Hind femur robust, smooth; small antegenicular and genicular tooth. Hind tibia straight and smooth with small teeth in distal half. First tarsal segment much longer than third. Pulvilli equally long, blunt.