Use this link and, if you're at home, this password/user name:
Search for your image as you normally would. You might need to use the family's name instead of the species name, or the common name instead of the Latin name.
Choose your image and what you want to do with it - cite, download, print, email or add to my images.
Google search for your species.
Go to images
Click "Search Tools"
Click "Usage Rights"
Select "use for noncommercial reuse"
You're good to right-click and save (or save to Drive) these images without breaking any copyright laws!