[3] Nepenthes micramphora was formally described in 2009 by Volker Heinrich, Stewart McPherson, Thomas Gronemeyer, and Victor Amoroso.

[1] It was collected on 31 January 2005, from Mount Hamiguitan, on the trail from San Isidro, at an altitude of 1300–1600 m.[1] Inflorescence measurements for the formal description were taken by Volker Heinrich at the type locality on 22 July 2008, since herbarium material of the floral structures could not be located.

A pair of wings (≤4 mm wide) typically runs down the ventral surface of the pitcher cup, although these may be reduced to ribs.

[1] Nepenthes micramphora has only been recorded from the highland slopes of Mount Hamiguitan, Davao Oriental, in the extreme southeast of Mindanao island in the Philippines.

[3] Its altitudinal distribution extends from 1100 m above sea level to the summit at 1635 m.[1] This species grows terrestrially in a wide range of habitats, including upper montane mossy forest, secondary vegetation, ridge tops, cliff sides, and landslides.

[3] On Mount Hamiguitan, N. micramphora is sympatric with N. alata (sensu lato), N. justinae[5] (previously identified as N. mindanaoensis), and N. peltata,[1] and grows in the same altitudinal range as N. hamiguitanensis.

In his 2009 book, Pitcher Plants of the Old World, Stewart McPherson writes that N. micramphora is "not currently threatened" owing to its extensive populations on Mount Hamiguitan and the fact that visitors are only permitted to climb the mountain with the assistance of a guide.

[3] The future of wild populations of N. micramphora will be further secured if provincial officials of Davao Oriental are successful in their bid to gain recognition of Mount Hamiguitan as a UNESCO World Heritage Site.

[7] Nepenthes abgracilis, N. cid and N. micramphora are united by aspects of pitcher and stem morphology as well as shared habitat preferences.

[2] Nepenthes micramphora is very similar to N. bellii of northern Mindanao in terms of the morphology of its stem, lamina, and inflorescence.

[8][9] Nepenthes micramphora is smaller in all respects and can be distinguished on the basis of its pitchers, which differ markedly in shape, size, peristome width, and tendril length.

[1] Nepenthes gracilis also bears a superficial resemblance to N. micramphora in the size and shape of its leaves, but this species is absent from the Philippines.

[3] Nepenthes micramphora has no confirmed natural hybrids, although certain plants from Mount Hamiguitan may represent crosses involving it and N. hamiguitanensis, N. justinae[5] (previously identified as N. mindanaoensis), and N. peltata.