Yintettix 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 : 347

Genus Yintettix Kasalo & Skejo , n. gen.

urn:lsid:zoobank.org:act:F9F6CD55-4E2B-45DD-9973-A55761D726BD

TYPE SPECIES. — Yintettix lingshengzhai Kasalo & Skejo , n. sp.

COMPOSITION. — Yintettix lingshengzhai Kasalo & Skejo , n. sp., Yintettix tumbrincki Kasalo & Skejo , n. sp.

DISTRIBUTION. — Known only from New Caledonia.

ETYMOLOGY. — The name refers to “yin”, the passive or negative 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 strongly protruding in front of eyes, triangular in dorsal view with clearly visible carinae. Anterior margin of pronotum triangular. Anterior part of pronotum slightly elevated. Legs slightly tuberculated. Anterior half of infrascapular area oval.

DESCRIPTION

Frontal costa bifurcation in ventral third of eye height. Scutellum widening ventrad, wider than antennal groove at widest part. Paired ocelli at level of ventral margin of eyes. Dorsal margin of antennal groove at level of ventral margin of eye. Antennae filiform, composed of 14 visible segments. Vertex significantly wider than eye in frontal view. In anterior view, base of vertex above of dorsal margin of eyes; vertex rectangular with medial carina rising above it. In dorsal view, vertex triangular, projecting anteriorly. Anterior margin of pronotum slightly or strongly triangular. Prozonal carinae parallel. Median carina throughout its length. Lateral lobes projecting outwards, rectangular, pointed backward. Ventral sinus blunt but narrow. Tegminal sinus absent. Infrascapular area wide above middle femur, narrowing slightly towards pronotal apex. Posthumeral spots absent.Tegmina and wings absent. Dorsal margin of anterior femur convex. Anterior tibia straight and smooth. First segment of anterior tarsus as long as second segment (minus claws), three pulvilli barely distinct. 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, sharp.

REMARK

The two species attributed to Yintettix Kasalo & Skejo , n. gen. strongly resemble each other, but also differ in many respects, as seen in the following diagnoses.Future research might show that they represent separate genera.