Opilo mollis (Linnaeus, 1758) - atlas

online; cit. 2026-09-16, Available from URL: https://www.kaefer-der-welt.de/opilo__mollis.htm

Year: 2014

Opilo pallidus (A. G. Olivier, 1795) - atlas

online; cit. 2026-09-16, Available from URL: https://www.hmyzfoto.cz/gtrg.html#opi

Opilo taeniatus (Klug, 1842) - atlas

online; cit. 2026-09-16, Available from URL: https://www.hmyzfoto.cz/gtrg.html#opi

Orchesia (Clinocara) blandula (Brancsik, 1874) - atlas

online; cit. 2026-09-21, Available from URL: https://coleonet.de/coleo/bilder/orchesia_blandula_hab.jpg

Orchesia (Clinocara) fasciata (Illiger, 1798) - atlas

online; cit. 2026-09-21, Available from URL: https://www.hmyzfoto.cz/gmln.html#orc

Orchesia (Clinocara) grandicollis (Rosenhauer, 1847) - atlas

online; cit. 2026-09-21, Available from URL: https://coleoptera-cz.webnode.cz/album/fotogalerie-gallery/orchesia-grandicollis-jpg/

Orchesia (Clinocara) minor (Walker, 1837) - atlas

online; cit. 2026-09-21, Available from URL: https://www.kaefer-der-welt.de/orchesia_minor.htm

Year: 2021

Orchesia (Clinocara) undulata (Kraatz, 1853) - atlas

online; cit. 2026-09-21, Available from URL: https://www.zin.ru/Animalia/Coleoptera/rus/orcun2km.htm

Year: 2017

Orchesia (Clinocara) undulata (Kraatz, 1853) - dimorfismus

online; cit. 2026-09-21, Available from URL: https://www.zin.ru/Animalia/Coleoptera/rus/orcun2km.htm

Year: 2017

Orchesia (Orchesia) fusiformis (Solsky, 1871) - atlas

online; cit. 2026-09-21, Available from URL: https://cassidae.uni.wroc.pl/Colpolon/orchesia%20fusiformis.htm

Orchesia (Orchesia) micans (Panzer, 1793) - atlas

online; cit. 2026-09-21, Available from URL: https://www.zin.ru/Animalia/Coleoptera/rus/orcmi1km.htm

Year: 2016

Orchesia (Orchestera) luteipalpis (Mulsant & Guillebeau, 1857) - atlas

online; cit. 2026-09-21, Available from URL: https://www.galerie-insecte.org/galerie/view.php?ref=130664

Orectochilus villosus villosus (O.F. Müller, 1776) - atlas

online; cit. 2026-07-28, Available from URL: https://www.zin.ru/Animalia/Coleoptera/rus/orevilkm.htm

Orsodacne cerasi (Linnaeus, 1758) (atlas)

online; cit. 2025-11-28, Available from URL: https://www.kaefer-der-welt.de/orsodacne__cerasi.htm

Year: 2015

Orsodacne cerasi (Linnaeus, 1758) (dichroismus)

online; cit. 2025-11-28, Available from URL: https://cassidae.uni.wroc.pl/Colpolon/orsodacne%20cerasi.htm

Orsodacne cerasi (Linnaeus, 1758) (dimorfismus)

online; cit. 2025-11-28, Available from URL: https://cassidae.uni.wroc.pl/Colpolon/orsodacne%20cerasi.htm

Orsodacne humeralis humeralis (Latreille, 1804) (atlas)

online; cit. 2025-11-28, Available from URL: https://www.kaefer-der-welt.de/orsodacne__lineola.htm

Year: 2015

Orsodacne humeralis humeralis (Latreille, 1804) (dichroismus)

online; cit. 2025-11-28, Available from URL: https://cassidae.uni.wroc.pl/Colpolon/orsodacne%20humeralis.htm

Year: 2015

Orsodacne humeralis humeralis (Latreille, 1804) (dimorfismus)

online; cit. 2025-11-28, Available from URL: https://www.galerie-insecte.org/galerie/view.php?ref=95504

Orthocerus clavicornis (Linnaeus, 1758) - atlas

online; cit. 2026-09-01, Available from URL: https://www.kaefer-der-welt.de/orthocerus_clavicornis.htm

Year: 2016

Orthocerus crassicornis (Erichson, 1845) - atlas

online; cit. 2026-09-01, Available from URL: https://www.kaefer-der-welt.de/orthocerus_crassicornis.htm

Year: 2015

Orthocis alni (Gyllenhal, 1813) - atlas

online; cit. 2026-10-20, Available from URL: https://www.kaefer-der-welt.de/orthocis_alni.htm

Year: 2017

Orthocis reflexicollis (Abeille de Perrin, 1874) - atlas

online; cit. 2026-10-20, Available from URL: https://www.lexikonbrouku.cz/cs/informacni-zdroje/zpravodajstvi?view=book&id=466

Year: 2023

Orthoperus atomus (Gyllenhal, 1808) - atlas

online; cit. 2026-03-16, Available from URL: https://cassidae.uni.wroc.pl/Colpolon/orthoperus%20atomus.htm

Orthoperus corticalis (L. Redtenbacher, 1845) - atlas

online; cit. 2026-03-16, Available from URL: https://cassidae.uni.wroc.pl/Colpolon/orthoperus%20corticalis.htm