Last time I checked my parameters, my daytime temps were around 82-88 depending on whether the fan was blowing or not and night time temps were between 72 and 78. Humidity during the day is at a minimum 75% and thats when the fan is blowing. Usually you can't see inside because it is so foggy. I have a 4" fan that blows once every hour and a half for about 5 minutes just to provide some air circulation. I can see the argument for the Harlequin amps also being tricolored, but the way I see it there are four different basic forms of ampullaria, Pitchers with a single base color such as green, red, or black for the majority of the pitcher (there could be more colors those are the only ones I have seen so far), pitchers with a base color with spotting or splotching of a similar or different color (these are probably the most variable, I've seen green, red, black, orange, and bronze bases with different colored splotches), pitchers with a base color but with mostly single tone spots but sometimes with two tones spots (I would say the harlequins are in this category), and true Tricolor ampullaria which appear to have more of a consistent pattern of a minimum of three colors such as the one I have. I don't think the base of the pitcher where it connects to the tendril and where the wings attach to the main pitcher body should be included when considering coloration patterns of ampullaria. I'm sure there are exceptions to these categories and by stating this I bet people will post photos of these exceptions, which I fully welcome. However, for now this is how I see it. I would also like to note that peristome color is highly variable within each of these four categories and can be one solid color or striped. I also distinguish different forms by whether they retain their pubescence after opening the pitcher or not. Based off of all of these variables I believe if one was to break all of this information down into taxonomic terms I think there are four varieties based on my four categories, and two forms one for plants that retain their pubescence and one for plants that do not. Peristome color is too variable and inconsistent to be used as a qualifier for taxonomic terms imho. These are just my thoughts on the matter, I have no scientific research or even field experience with N. ampullaria to be making these claims for taxonomic differences, but as a horticulturist I'm saying I could see these differentiations making sense at a taxonomic level.