Tropiorhynchus, Blanchard, 1851

Gupta, Devanshu & Chandra, Kailash, 2017, Tropiorhynchus annandalei (Coleoptera: Scarabaeidae: Rutelinae), a new species from Maharashtra, India, Zootaxa 4337 (4), pp. 509-522 : 516

Key to the species of the genus Tropiorhynchus

1. Pronotum rugose, posterior angles acute; surface of pronotal disc densely setose ( Fig. 10 ); outer claw of protarsus split apically (Fig. 34); outer claw of mesotarsus and metatarsus simple (Figs. 37, 41); all trochanters without teeth ( Figs. 22–24); mesosternum produced; ventral plate of aedeagus with a raised lamina in middle (Fig. 49)............. T. orientis ( Newman, 1838)

- Pronotum punctate, posterior angles blunt; surface of pronotal disc sparsely setose with a group of setae present near anterior portion of pronotum ( Figs. 11–13 ); outer claw of protarsus and mesotarsus split apically (Figs. 35–36, 38–40), outer claw of metatarsus simple (Figs. 42–44); trochanters with or without tooth ( Figs. 25–33); mesosternum not produced; ventral plate of aedeagus without raised lamina in middle (Figs. 50–52)....................................................... 2

2. Elytra black without longitudinal markings, sometimes with two yellow spots in middle ( Figs. 15 , 54 ); pronotal disc densely punctate, punctures large, edges of punctures near anterior portion of pronotum overlapping ( Fig. 11 ); apex of parameres blunt at apex (in frontal view) ( Fig. 46 ), ventral plate strongly curved in lateral view (Fig. 50).. T. podagricus ( Burmeister, 1844)

- Elytra yellow with brownish-black markings ( Figs. 16–17 ); pronotal disc finely punctate, punctures small, edges of punctures near anterior portion of pronotum not overlapping ( Figs. 12–13 ); apex of parameres either pointed or blunt (in frontal view) ( Figs. 47–48 ); ventral plate in lateral view relatively straight (Figs. 51–52)........................................ 3

3. Punctures on pronotal disc comparatively close ( Fig. 12 ); pygidium dark brown, finely punctate in middle, rugose at sides ( Fig. 20 ), setae tan; ventral plate of aedeagus filamentous, slightly curved apically with a strong beak-shaped, hooked process (Fig. 51); paramere tips pointed (in frontal view) ( Fig. 47 )................................ T. umbrinus Machatschke, 1954

- Punctures on pronotal disc fine, well separated ( Fig. 13 ); pygidium black, smooth in middle, rugose at sides ( Fig. 21 ), setae white; ventral plate of aedeagus nearly straight, apex without hooked process (Fig. 52); paramere tips weakly pointed (in frontal view) ( Fig. 48 ).............................................. T. annandalei Gupta and Chandra , new species

Figures

FIGURES 10 – 13. Pronotum. 10, Tropiorhynchus orientis; 11, T. podagricus; 12, T. umbrinus; 13, T. annandalei (holotype).

FIGURES 14 – 17. Elytra. 14, Tropiorhynchus orientis; 15, T. podagricus; 16, T. umbrinus; 17, T. annandalei (holotype).

FIGURES 53 – 54. Field photographs. 53, T. annandalei (paratype, female); 54, T. podagricus, male.

FIGURES 45 – 48. Parameres (in dorsal view). 45, T. orientis; 46, T. podagricus; 47, T. umbrinus; 48, T. annandalei (holotype). FIGURES 49 – 52. Parameres (in lateral view). 49, T. orientis; 50, T. podagricus; 51, T. umbrinus; 52, T. annandalei (holotype).

FIGURES 18 – 21. Pygidium. 18, Tropiorhynchus orientis; 19, T. podagricus; 20, T. umbrinus; 21, T. annandalei (holotype).