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Nepenthes infauna

Nepenthes infauna are the organisms that inhabit the pitchers of Nepenthes plants. These include fly and midge larvae, spiders, mites, ants, and a species of crab, Geosesarma malayanum. The most common and conspicuous predators found in pitchers are mosquito larvae, which consume large numbers of other larvae during their development. Many of these animals are so specialised that they cannot survive anywhere else, and are referred to as nepenthebionts.

Classification
Nepenthebionts Nepenthebionts are animals which are specialised to live inside Nepenthes pitchers and are totally dependent on them at least at some stage of their lives. Many species of mosquito larvae fall into this category. Examples include Culex rajah and Toxorhynchites rajah, which are named after Nepenthes rajah, as well as the related species Culex jenseni and Uranotaenia moultoni. Nepenthephiles Nepenthephiles are organisms that are frequently found in Nepenthes pitchers, but which are not completely dependent on them at any stage of their lives. Most animals that coexist with Nepenthes fall into this category. Examples include Henriksenia nepenthicola, a crab spider that feeds on flies caught by Nepenthes, and Geosesarma malayanum, a species of crab. Nepenthexenes Nepenthexenes are animals which are not normally associated with pitchers, but which are occasionally encountered in them. These are usually found if a pitcher becomes overloaded with putrefying prey, when it may be colonised by the larvae of various fly species. These simply feed on rotting matter regardless of whether it is found in pitchers. ==Diversity==
Diversity
In a 1991 study, a wide diversity of animals was found in pitchers of Nepenthes ampullaria: Carrion feeders: • Endonepenthia (Phoridae) • Syrphidae Filter feeders: • Aedes albopictus, Culex coerulescens, Culex hewitti, Culex navalis, Tripteroides nepenthis, Tripteroides tenax, Uranotaenia moultoni (Culicidae) Detritus feeders: • several AnoetidaeDasyhelea, Forcipomyia (Ceratopogonidae) • several ChironomidaeHarpacticoidaSciaridae Nipping predators (can swim in the fluid, mandibles move against one another in a horizontal plane): • Aedes brevitibia, Toxorhynchites indicus (Culicidae) • Corethrella calathicola (Chaoboridae) Hooking predators (can only crawl, mandibles move parallel to one another in a vertical plane): • DolichopodidaeListodiplosis (Cecidomyiidae) • Nepenthosyrphus (Syrphidae) Terrestrial predators: • Misumenops (Thomisidae) • Xenoplatyura (Mycetophilidae) Nepenthebiont Diptera: • Aedes brevitibia • several ChironomidaeCorethrella calathicolaCulex hewittiCulex coerulescensCulex navalis • several Dasyhelea species (D. ampullariae, D. biseriata and others) • DolichopodidaeEndonepenthiaNepenthosyrphusToxorhynchites indicusTripteroides nepenthisTripteroides tenaxUranotaenia moultoni ==See also==
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