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Posted

I have noticed these flying insects on the anthers of some of my Anthurium recently.   Here is an example on an Anthurium podophylum.

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33.0782 North -117.305 West  at 72 feet elevation

Posted

For sure any insect activity is a great sign. When some of my special plants flower I put them outside the greenhouse just to hopefully attract any sort of bug wanted or unwanted. Especially with monoecious plants.

Posted

They are fruit flies, no doubt attracted by the nectar the inflorescence is producing. No idea if they're actually pollinating it, however. If they are, then these anthuriums should end up getting pollinated the world over, as the flies are found pretty much everywhere, and I'm not sure that they do.

This paper suggests weevils are likely the main pollinators of many anthuriums:
https://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442007000100029

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Posted
  On 4/8/2025 at 12:27 PM, PalmsandLiszt said:

They are fruit flies, no doubt attracted by the nectar the inflorescence is producing. No idea if they're actually pollinating it, however. If they are, then these anthuriums should end up getting pollinated the world over, as the flies are found pretty much everywhere, and I'm not sure that they do.

This paper suggests weevils are likely the main pollinators of many anthuriums:
https://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442007000100029

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Saw this and it raises an interesting question since some bees are apparently attracted to -at the very least-  some Anthuriums, ...which begs the question.. Could they also pollinate these?  ..even if indirectly while crawling around  collecting X, Y, or Z chemical compound contained in / or simple nectar produced by the Spadix? 

Plenty of iNat shots of Eulaema polychroma  < Tribe Euglossini > all over the Spadix of Flamingo Flower / Painter's Palate -type Anthuriums.  Wouldn't doubt they could be attracted to other sps as well.
 

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