Figures 9-15 from: (2013) Distinguishing Bolboceras inaequale Westwood, 1848 and two new relatives from India (Coleoptera, Geotrupidae, Bolboceratinae). ZooKeys 276: 55-66. https://doi.org/10.3897/zookeys.276.4786

Figures 9-15 - Forebody and aedeagus of Bolboceras: 9–12 head and pronotum, frontodorsal view 9–10 Bolboceras inaequale (9 major specimen from Kolkata 10 minor specimen from Dhanjuri) 11 duplicatum,holotype 12 orissicum,holotype 13–15 aedeagus, upper side view, of 13 Bolboceras inaequale,major specimen from Kolkata 14 orissicum,holotype 15 duplicatum,holotype. Scale lines 1 mm