Riegeriana, gen. nov.

Modified key to the genera of Physopeltini to include Riegeriana gen. nov.

For easy identification of Riegeriana gen. nov., we provide the following modification of the key to the genera of Physopeltini provided by Stehlík (2013).

6 (3) Profemora ventrally with a longitudinal furrow.................................... Physopeltini Hussey, 1929 7

7 (8) Callar lobe of pronotum strongly gibbose and posteriorly strongly constricted and markedly demarcated from pronotal lobe. Body length 8.6–8.8 mm. Australia, New Guinea ............................... Taeuberella Schmidt, 1932

8 (7) Callar lobe of pronotum not strongly gibbose and simultaneously strongly constricted posteriorly, therefore not markedly demarcated from pronotal lobe....................................................................... 9

9 (10) Head short, positioned much lower than strongly gibbose dorsal surface of callar lobe (see in lateral view). Lateral margin of pronotum broad. Males pterygodimorphic, macropterous or brachypterous. In macropterous morph, all coxae provided with denticles. Body length 12.7–13.4 mm. Female unknown............................... J indraia Stehlík, 2006

10 (9) Head not shortened and not situated at about the same level as pronotum..................................... 11

11 (12) Lateral margins of pronotum widely explanate, elevated above pronotal surface. Macropterous. Large species, body length 14.8–21.2 mm ................................................................................... 11a

11a (11b) Procoxa in both sexes bearing a lateral process with bifurcate apex (Figs 3–4, 6–7). Sexually dimorphic: Males (18.6–19.3 mm) larger and more robust than females (15.8–16.5 mm), having pronotum longer and more gibbose, antennae and legs longer; in females pronotum shorter and weakly gibbose, antennomeres 1–3 and legs being distinctly shorter (Figs 1–2 and 5). India ......................................................................... Riegeriana gen. nov.

11b (11a) Procoxa in both sexes without any apparent process or tubercle (Figs 28–31). Without sexual dimorphism; callar lobe weakly gibbose in both sexes (Figs 18–27). Oriental Region, New Guinea ........................ Iphita Stål, 1873

12 (11) Lateral margins of pronotum narrow. Callar lobe strongly to weakly gibbose. Usually smaller species.............. 13

13 (14) Larger, body length 9.5–20.0 mm. Callar lobe strongly gibbose in male, less gibbose in female (different among subgenera). Macropterous. Stridulatory organs (when present) on coxa and trochanter of fore leg. Afrotropical, East Palaearctic, Oriental and Australian Regions.......................................... Physopelta Amyot & Serville, 1843

14 (13) Smaller, body length 5.2–8.7 mm. Callar lobe equally elevated in both sexes. Often pterygodimorphic, with macropterous and brachypterous morphs. Stridulatory organs (when present) on lateral margins of pronotum and corium. Oriental and Australian Regions........................................................... Delacampius Distant, 1903