Fartmanntettix Tumbrinck & Tan, 2024

Tan, Ming Kai, Tumbrinck, Josef, Rivera, Rodrin R. & Nuñeza, Olga Macas, 2024, A new genus and a new species of Cladonotinae (Orthoptera: Tetrigidae) from Mindanao, Philippines, Zootaxa 5506 (2), pp. 194-204 : 197-198

Genus Fartmanntettix Tumbrinck & Tan , gen. nov.

Type species: Fartmanntettix undulatus Tan & Tumbrinck , gen. et sp. nov., by monotypy

Diagnosis. Fairly stout habitus that is neither distinctly compressed dorso-ventrally nor rounded. Vertex is wider than the width of one eye, flat or slightly concave; middle carina is distinct; lateral carinae slightly elevated to form low horns; apex of vertex surpassing the front of eyes. Bifurcation of frontal costa in line with middle of eye. Facial carinae of the frontal costa are considerably widened and enclose a broadened scutellum. Scutellum is less wide than the scapus. Antennae long, segments elongated and flattened but not foliaceous. Eyes usually not elevated above pronotum. Lateral ocelli situated at level with the middle of eyes; medial ocellus located below the lower margin of the eyes. Pronotum rugose and not surpassing abdominal apex and apices of posterior femora. Pronotal disk generally flattened with undulated carinae: median carina is prominent throughout its length and undulated, most prominent at anterior half and highest between prozona and interhumeral carinae. Median carina is also flanked by a network of irregular carinae: prozona and interhumeral carinae roundly raised. Angle of ventral sinus between lateral shoulder and lateral lobe deep and rounded. Lower margin of lateral lobe of pronotum bluntly triangular with obtuse angle. Apterous. Anterior and middle femora with dorsal margins having well-developed carinae. First segment of the tarsus on the posterior legs is as long as 3 rd segment.

Included species. Type species only.

Remarks. We consider this new genus under the subfamily Cladonotinae by these characters following Tumbrinck (2014): the medial ocellus located below the lower margin of the eyes; the fascial carinae of the frontal costa considerably widened and enclose a broadened scutellum (in this genus the scutellum is however less wide than the scapus, atypical in this subfamily); dorsal margins of the anterior and middle femora with well-developed carinae.

Comparison. This new genus is similar to Trusmaditetrix Storozhenko, 2023 from Borneo by the generally flattened pronotum and widened vertex and the anterior and middle femora having undulating dorsal and ventral margins and the relative length of the 1 st and 3 rd segments of the posterior tarsus; but differs by the carinae on the pronotum more distinctly undulated and raised, forming numerous small peaks, and at apex faintly bifurcated and not surpassing abdominal apex.

The new genus also differs from Storozhenkotettix Patano, Skejo, Amoroso & Kasalo, 2024 from the Philippines by the vertex distinctly wider than an eye, the pronotum more rugose and at apex only faintly bifurcated and the femora with carinae more undulated; from Planotettix Tumbrinck, 2014 from New Guinea by the larger size (prontoum length> 5 mm), less dorso-ventrally flattened habitus and the legs having less strongly undulated carinae; from Devriesetettix Tumbrinck, 2014 and Planotettix Tumbrinck, 2014 from New Guinea and Tepperotettix Rehn, 1952 from Australia by its vertex, the apex of its pronotal process narrow, shape of median carina, and the legs distinctly more undulated.

Etymology. The new genus is named after Thomas Fartmann, former president of the German Orthopterological Society.

The suffix “tettix” refers to the Ancient Greek word for “grasshopper”, making the name of masculine gender.