This was my first Nepenthes that I bought to see how well I could grow one. As I discovered, like most CPs, the difficulty of growing them is exaggerated and I have acquired several others since but have never positively identified this one. So have at it, Nepenthes experts!
Pitchers are pretty dark red (darker than it looks in the picture), with some slightly darker speckling and are approximately 4" tall, producing UV-reactive nectar. Pitchers are extremely long-lived as I am pretty sure there are still pitchers on the plant from more than a year ago that still look decent. The plant is reluctant to produce pitchers in the winter, but also does not seem to care much about changing conditions while other easier-pitchering plants will lose their pitchers with even small disturbances. Leaves are slightly V-shaped and grow upward from the stem with a usual length of about 6", with some reaching 7". Tendril tips tend to be extremely fuzzy, and I have not noticed any tendency for the tendrils to curl or wrap themselves around other objects.