Tondanotettix C. Willemse, 1928

Storozhenko, S. Yu., 2025, REVIEW OF THE GENUS TONDANOTETTIX C. WILLEMSE, 1928 (ORTHOPTERA: TETRIGIDAE), Far Eastern Entomologist 516, pp. 7-14 : 8-9

Genus Tondanotettix C. Willemse, 1928

Tondanotettix Willemse, 1928: 23 ; Günther, 1937: 170; Günther, 1938: 346; Blackith, 1992: 193; Otte, 1997: 28; Tumbrinck, 2014: 351, 389; Storozhenko, 2023: 68.

Type species: Acridium brevis Haan, 1843 , by original designation.

DIAGNOSIS. Body strong. Head not protruding above pronotum in lateral view. Antennae filiform. Frontal ridge in lateral view deeply excised between eyes; width of frontal ridge near base of antennae equal to width of 1st antennal segment, therefore typical for Cladonotinae scutellum absent; sides of frontal ridge below lateral ocelli paralell. Apical segment of maxillary palps strongly dilated, oviform. In dorsal view anterior margin of the pronotum straight; apex of posterior process of the pronotum bifurcate; hind margin of lateral lobes of the pronotum with a lower sinus only; lateral lobes directed outwards and downwards, with posterior angles rounded; infrascapular area broad. Tegmina and hind wings absent. Hind femora stout; antegenicular and genicular teeth distinct. First tarsal segment of hind legs almost as long as 3rd segment. Valves of ovipositor narrow and dentate.

COMPOSITION. Three species of witch one is described below.

DISTRIBUTION. The genus is endemic to Sulawesi Island.

COMPARISON. This genus is most similar to the genus Hyboella Hancock, 1915 from subfamily Metrodorinae but latter differs from Tondanotettix in follow combination of features: frontal ridge in lateral view broadly rounded or weakly excised between eyes; sides of frontal ridge below lateral ocelli divergent; apex of posterior process of the pronotum rounded or acute; infrascapular area of the pronotum narrow; tegmina and hind wings present but in some species of Hyboella absent.

Key to species and subspecies

1(6) Median carina of pronotum in lateral view excised.

2(5) Median carina of pronotum deeply excised before shoulders ( Fig. 1 ) ........... M. brevipes

3(4) Median carina of pronotum after shoulders with a few tubercles (North Sulawesi) .......... ........................................................................................................... M. brevipes brevipes

4(3) Median carina of pronotum after shoulders with two humps (South Sulawesi) ................ ........................................................................................................ M. brevis meridionalis

5(2) Median carina of pronotum with shallow excision ( Fig. 3 ) ......................... M. modestus

6(1) Median carina of pronotum in profile arch-like ( Fig. 5 ) ....................... T. doloduo sp. n.

An annotated list of species and subspecies

Figures

Figs 1–4. Tondaotettix spp., females (after Günther, 1937). 1, 2 – T. brevis meridionalis: 1 – lateral view; 2 – dorsal view; 3, 4 – T. modestus: 3 – lateral view; 4 – dorsal view.

Figs 5–8. Tondaotettix doloduo sp. n., male, holotype. 5 – body, lateral view; 6 – same, dorsal view; 7 – anterior part of body, dorsal view; 8 – mid and hind legs, lateral view.