Yes, Gonzalo is right. Chupetinha and Biquinho are the same. These two words actually are synonyms. Some regions use the word Chupetinha for rubber nipple and other regions call it Biquinho 
It's a very mild chile, with almost no heat at all. It has a nice chinense-type fruity taste.
There is also a hot version of it, which is usually called "Biquinho Ardida" (ardida means "hot").

It's a very mild chile, with almost no heat at all. It has a nice chinense-type fruity taste.
There is also a hot version of it, which is usually called "Biquinho Ardida" (ardida means "hot").

