Nepenthes klossii (Wissel Lakes, Irian Jaya)
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Nepenthes klosiii forms a hood that attracts flying insects with nectar to the peristome. The semi-transparent translucent reverse side signals an exit to insects and ensures that they fly directly into the pitcher. The same trapping mechanism can be observed elsewhere in the genus only in Nepenthes aristolochioides, which forms very similar but smaller pitchers. However, there is said to be no closer relationship between the two species, and the pitcher shape is said to be based on convergent evolution.
Nepenthes klossi is endemic to a small area of Irian Jaya (Indonesian part of Papua) where it occurs at 930-2000 m.a.s.l..