I could have added more taxa, there are more that have been spotted on ispot, but wanted to keep the list 'manageable' (and I got fed up with all the fiddling around with the code). Although with the images in there it is not idea to say the least. Anyone can add extra species they have seen in the comments as you have done, just as a note.
If the images were separate then it might not be so much of an issue to have a longer list and as you say it would make the results much easier to see.
Not sure if it allows this though as each image would have to have its name otherwise it would not be clear which is which.