Question about Mexican Fireleg

[Lisa Lockwood]

I have a Mexican Fireleg female about 4 years old. A couple of weeks ago I saw some fuzzy "balls" on her abdomen. There are more now and she is losing her hair where they are. At first I thought it might be webbing or substrate (I use coconut). But now I am worried she may have something wrong. I am attaching some photos so you can see what is happening. The cage is not moist so I doubt it would be fungus. Thanks for any advice you can give.

 

[Nada]

They're loose urticating hairs,she's just kicking. It means that she's a bit stressed out. If you handle her, I would refrain.
Firelegs are very skittish and easily bothered. If you don't you may want to put her somewhere with less foot traffic.

 

[Lisa Lockwood]

I was hoping that was all it was I did make one recent change in her enclosure I live in California and it is summer so I removed the heat pad and light because it was too hot and replaced it with a white light. One of the sites I was looking on says that tarantulas don't like bright light. Could that be stressing her out? And what would you recommend?

 

[Nada]

Tarantulas don't need any additional heat. If you're comfortable, they are too. Tarantulas do not like light. I would get the light off her immediately. However, It's unlikely that she's kicking because of the light. They usually kick at a physical threat.