I know it doesn’t catch the details Please tell me what do you think :) The photo is from Santander, Colombia. I didn’t take any closeups photos 😞, but these were little bees, like 5 x 1 mm. The tube didn’t seem man-made, it was indoors and the owner of the house said that they are stingless, since no one has been stung.

  • $\begingroup$ Welcome to Biology.SE! For identification questions please edit your post to: 1) include the location (e.g. country and region — the more specific the better), and 2) an estimate of the size of the creature. If possible a closeup photo would also be helpful. ——— The location and size can be essential clues for identification. ——— In addition, can you add anything you know about the nature of the tube sticking out of the wall — e.g. can you tell if that a man-made material or something the insects have produced? Thanks! 😊 $\endgroup$ – tyersome Aug 17 '19 at 23:51
  • $\begingroup$ Oh, of course, I’m new at this, okay let’s see $\endgroup$ – user53181 Aug 17 '19 at 23:52
  • $\begingroup$ Great that's much better and look you've already got someone making a suggestion! 😁 $\endgroup$ – tyersome Aug 18 '19 at 1:27
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    $\begingroup$ Quick question, did you notice the bees entering and exiting the "tube", as well as entering and exiting the wall? It is common for some Halictidae species to have two entrances, one "royal" entrance, and a "worker" entrance below it. And I do find it interesting that they built a nest in a wall instead of in the ground. $\endgroup$ – Gabriel Fair Aug 18 '19 at 18:35

Looks like the family Halictidae to me. Known as a sweat bee. Maybe Lasioglossum zephyrus?

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    $\begingroup$ Could you elaborate on your what characteristics make you think of that family and why you suggested Lasioglossum zephyrus? That species does not appear to be reported in Columbia ... $\endgroup$ – tyersome Aug 18 '19 at 2:26

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