Toliaridectes antsycurvis n. gen. n. sp.

Fig. 3, 6, 9, 12, 15, 18, 21, 24, 31–33, 48–54, 57, 62–67, 70–72, Tab. 3.

Toliaridectes antsycurvis n. gen. n. sp., here described.

Holotype male. Madagascar, province Toliara, région Atsimo-Andrefana, Tulear II, Manombo-Sud, Andrevo-Bas, 23.1524°S, 43.6270°E, 15-16.ii.2019, S. Hugel leg. (2019 MADASH 043), MNHN (MNHN-EO-ENSIF10802).

Paratypes. Madagascar, province Toliara, région Atsimo-Andrefana, Tulear II, Manombo-Sud, Ranobe, 23.0033°S, 43.6233°E, 21.ii.2019, S. Hugel leg. (2019 MADASH 186, ♀ Allotype), MNHN (MNHN-EO-EN- SIF 10803) . same as holotype, (2019 MADASH 011 ♀, 042 ♂), coll. SH. same as allotype, (2019 MADASH 187 ♀), CAS (CASENT0872623) . Madagascar, province Toliara, région Atsimo-Andrefana, Tulear II, Belalanda, Ifaty, 23.1413°S, 43.6152°E, 18.ii.2019, S. Hugel leg. (2019 MADASH 068 ♂, 069 ♀), coll. SH . Madagascar, province Toliara, région Atsimo-Andrefana, Tulear II, Belalanda, Tsivonoe, 23.1502°S, 43.6268°E, 18.ii.2019, S. Hugel leg. (2019 MADASH 145 ♀), coll. SH .

Diagnosis. Color: hind femur with weak dark longitudinal pattern on external (outer) field (Fig. 24, shiny black pattern in T. meridionalis n. gen. n. sp. and T. wendenbaumi n. gen. n. sp.). Male. Xth abdominal tergite emargination wider than deep (Fig. 50; narrower in T. wendenbaumi n. gen. n. sp. and T. meridionalis n. gen. n. sp.); paraprocts with a short narrow projection (Fig. 49; long digitiform projection in T. meridionalis n. gen. n. sp., short and wide in T. wendenbaumi n. gen. n. sp.). Cercus median projection long (Fig. 51; shorter in T. wendenbaumi n. gen. n. sp.). Subgenital plate wider than long (Fig. 48; wider than long in T. meridionalis n. gen. n. sp., longer than wide in T. wendenbaumi n. gen. n. sp.). Titillators enlarged distally (Fig. 57; pointing in T. meridionalis n. gen. n. sp. and T. wendenbaumi n. gen. n. sp.). Female. Subgenital plate wider than long, with shallow rounded emargination (Fig. 62; longer than wide in T. wendenbaumi n. gen. n. sp.). Ovipositor short for the genus (Fig. 63, Table 3).

Description. Size rather small for the genus (Table 3). Color: head genae with distinct black pattern and dots; pronotum folds with usually without a light band edging the black band; hind femur with weak dark longitudinal pattern on external (outer) field (Fig. 24). Male. Xth abdominal tergite emargination wider than deep (Fig. 50); paraprocts with a short narrow projection (Fig. 49). Cercus dorsal lobe angulose; median projection long, bilobate (Fig. 51–54). Subgenital plate wider than long; with distinct emargination; styli separated by more than styli length (Fig. 48). Titillators enlarged distally; internal part shaped as inverted wide T (Fig. 57). File with ca. 39 teeth (Fig. 33). Female. Subgenital plate with a shallow rounded emargination (Fig. 62). Ovipositor short for the genus, straight area of ventral margin short (Fig. 63, Table 3).

Acoustic behavior (Figures 64–67, 70). Males of Toliaridectes antsycurvis n. gen. n. sp. sing at least at night; we have not recorded calls by day hours. Males adopt a peculiar position while singing, the abdomen bent downwards allowing to release the forewings from the pronotum (Fig. 70). I recorded one male by night at 0h30 a.m. and 30°C. This call was mostly in the ultrasound range (peaking above 20 kHz). It was made of very long repetitions (minutes) of short phonatomes repeated every 46.5 ± 0.3 ms (corresponding to 21.7 Hz). Phonatomes were made of 5–7 pulses of increasing amplitude (Fig. 67; small pulses may have been missed in the noise). Phonatome duration is 29.0 ± 0.4 ms.

Derivation of name. Antsy (Malagasy): knife; curvis (latin): curved. After the shape of ovipositor.