Edited by Heriberto Ávila-González, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Pedro Nájera Quezada, some rights reserved (CC BY-NC), uploaded by Pedro Nájera Quezada
- 2. (c) stremblay21, some rights reserved (CC BY-NC), uploaded by stremblay21
- 3. (c) Nadezhda Zelenova, some rights reserved (CC BY-NC), uploaded by Nadezhda Zelenova
- 4. (c) sergioniebla, some rights reserved (CC BY-NC-SA), uploaded by sergioniebla
- 5. (c) José Belem Hernández Díaz, some rights reserved (CC BY), uploaded by José Belem Hernández Díaz
- 6. (c) tylerf2002_, some rights reserved (CC BY-NC)
- 7. (c) dandybiologist, some rights reserved (CC BY-NC), uploaded by dandybiologist
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- 9. (c) Cassiopée2010, some rights reserved (CC BY-NC-SA)
- 10. (c) jdrickett, some rights reserved (CC BY-NC), uploaded by jdrickett
- 11. (c) Forest and Kim Starr, some rights reserved (CC BY)
- 12. (c) Fritzflohrreynolds, some rights reserved (CC BY-SA)
- 13. no rights reserved, uploaded by Robert Creech
- 14. (c) David Hoare, some rights reserved (CC BY-NC), uploaded by David Hoare
- 15. (c) David Renoult, some rights reserved (CC BY-NC), uploaded by David Renoult
- 16. (c) Art Mur, some rights reserved (CC BY-NC-ND), uploaded by Art Mur
- 17. (c) Roberto R. Calderón, some rights reserved (CC BY-NC), uploaded by Roberto R. Calderón
- 18. (c) Gordo Laidlaw, some rights reserved (CC BY-NC), uploaded by Gordo Laidlaw
- 19. (c) Squeezeweasel, some rights reserved (CC BY-SA)
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- 21. (c) Wayne Dumbleton, some rights reserved (CC BY-NC-SA)
- 22. (c) Brandon Hein, some rights reserved (CC BY-NC), uploaded by Brandon Hein
- 23. (c) Antonio W. Salas, some rights reserved (CC BY), uploaded by Antonio W. Salas
- 24. (c) Nathan Taylor, some rights reserved (CC BY-NC), uploaded by Nathan Taylor
- 25. (c) Tony Rebelo, some rights reserved (CC BY-SA), uploaded by Tony Rebelo
- 26. (c) Steve Jones, some rights reserved (CC BY-NC), uploaded by Steve Jones
- 27. (c) Rob Klotz, some rights reserved (CC BY-NC), uploaded by Rob Klotz
- 28. (c) BJ Stacey, some rights reserved (CC BY-NC), uploaded by BJ Stacey
- 29. (c) psweet, some rights reserved (CC BY-SA), uploaded by psweet
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- 31. (c) Daniel Montoya Ferrer, some rights reserved (CC BY-NC), uploaded by Daniel Montoya Ferrer
- 32. (c) Teale Britstra, some rights reserved (CC BY-NC-ND), uploaded by Teale Britstra
- 33. (c) Kimberly Beal, some rights reserved (CC BY-NC), uploaded by Kimberly Beal
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- 35. (c) J. Fernando Pío León, some rights reserved (CC BY-NC), uploaded by J. Fernando Pío León
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- 45. (c) Steve Dew, some rights reserved (CC BY-NC), uploaded by Steve Dew
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- 49. (c) Amber, some rights reserved (CC BY-NC), uploaded by Amber
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- 51. (c) Elizabeth Torres Bahena, some rights reserved (CC BY-NC), uploaded by Elizabeth Torres Bahena
- 52. (c) Ignacio Torres García, some rights reserved (CC BY-NC), uploaded by Ignacio Torres García
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- 54. (c) Alfonso Gutiérrez Aldana, some rights reserved (CC BY-NC), uploaded by Alfonso Gutiérrez Aldana
- 55. (c) Enrique Flores, some rights reserved (CC BY-NC), uploaded by Enrique Flores
- 56. (c) Dra. Laura Elvia Uribe Lara, some rights reserved (CC BY-NC), uploaded by Dra. Laura Elvia Uribe Lara
- 57. (c) Sharon Louw, some rights reserved (CC BY-NC), uploaded by Sharon Louw
- 58. (c) M, some rights reserved (CC BY-NC), uploaded by M
- 59. (c) Leticia Soriano Flores, some rights reserved (CC BY-NC), uploaded by Leticia Soriano Flores
- 60. (c) C. Mallory, some rights reserved (CC BY-NC), uploaded by C. Mallory
- 61. (c) plerd, some rights reserved (CC BY)
- 62. (c) Heriberto Ávila-González, some rights reserved (CC BY-NC), uploaded by Heriberto Ávila-González
- 63. (c) Alex Abair, some rights reserved (CC BY-NC), uploaded by Alex Abair
- 64. (c) Don Loarie, some rights reserved (CC BY), uploaded by Don Loarie
- 65. (c) Neptalí Ramírez Marcial, some rights reserved (CC BY), uploaded by Neptalí Ramírez Marcial
- 66. (c) Christian Schwarz, some rights reserved (CC BY-NC), uploaded by Christian Schwarz
- 67. (c) dog.breath, some rights reserved (CC BY-NC-ND)
- 68. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 69. (c) Elías Flores Ordorica, some rights reserved (CC BY-NC), uploaded by Elías Flores Ordorica
- 70. (c) Jack, some rights reserved (CC BY-NC), uploaded by Jack
- 71. (c) Oscar González, some rights reserved (CC BY-SA), uploaded by Oscar González
- 72. (c) Liu JimFood, some rights reserved (CC BY-NC), uploaded by Liu JimFood
- 73. (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick
- 74. (c) Patrick Alexander, some rights reserved (CC BY-NC-ND)
- 75. (c) Jose Luis Leon de la Luz, some rights reserved (CC BY-NC), uploaded by Jose Luis Leon de la Luz
- 76. (c) taisturdivant, some rights reserved (CC BY-NC)
- 77. (c) Barry Sullender, some rights reserved (CC BY-NC), uploaded by Barry Sullender
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- 80. (c) Shang-Kwei Wang, some rights reserved (CC BY-NC), uploaded by Shang-Kwei Wang
- 81. (c) Opuntia Cadereytensis, some rights reserved (CC BY-NC), uploaded by Opuntia Cadereytensis
- 82. (c) Tom Potterfield, some rights reserved (CC BY-NC-SA)
