1. (c) Charlesjsharp, algunos derechos reservados (CC BY-SA), uploaded by INVASORES - administrador
2. (c) USDA Forest Service Region 2, Rocky Mountain Region Archive, Bugwood.org, algunos derechos reservados (CC BY), uploaded by INVASORES - administrador
3. (c) Franco Folini, algunos derechos reservados (CC BY-SA), uploaded by INVASORES - administrador
4. (c) Dr Horia R. Galea, algunos derechos reservados (CC BY-SA), uploaded by INVASORES - administrador
5. (c) James St. John, algunos derechos reservados (CC BY), uploaded by INVASORES - administrador
6. (c) U.S. Geological Survey, todos los derechos reservados, uploaded by INVASORES - administrador
7. US Geological Survey, sin restricciones conocidas de derechos (dominio público), uploaded by INVASORES - administrador
8. (c) Jess Van Dyke, algunos derechos reservados (CC BY), uploaded by INVASORES - administrador
9. (c) Etrusko25, algunos derechos reservados (CC BY-SA), uploaded by INVASORES - administrador
10. Naturalis Biodiversity Center, sin restricciones conocidas de derechos (dominio público), uploaded by INVASORES - administrador
11. (c) Dennis L., algunos derechos reservados (CC BY), uploaded by INVASORES - administrador
12. (c) Vidar A, algunos derechos reservados (CC BY), uploaded by INVASORES - administrador
13. Motte123, sin restricciones conocidas de derechos (dominio público), uploaded by INVASORES - administrador
14. Amy Benson, U.S. Geological Survey, sin restricciones conocidas de derechos (dominio público), uploaded by INVASORES - administrador
15. (c) Pierre Pouliquin, algunos derechos reservados (CC BY-NC)
16. (c) Michal Mañas, algunos derechos reservados (CC BY), uploaded by INVASORES - administrador
17. (c) Ori~, algunos derechos reservados (CC BY-SA), uploaded by INVASORES - administrador
18. Francisco Welter Schultes, sin restricciones conocidas de derechos (dominio público), uploaded by INVASORES - administrador