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I found this insect under my shirt while working, it is the first time I ever see something like that and it is kind of too small for me to tell what it is.

enter image description here enter image description here

I do not have a property measuring tool to get it's size but it is at most 1cm across. Had too zoom a lot with my phone camera to take these pictures so it is kind of blur.

If it matters I live in Singapore, there are various trees around the place but I did not go into any patches of dense forested areas.

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    Is it all black or more of a brown color, any other identifying marks or colors? Does it appear perfectly round? – Nate W Mar 9 '18 at 0:37
  • Welcome Ben! That's a cool bug! I have a few questions in addition to Nate Wengert's. Is it shiny? It looks like it, unless that's just the picture. Does the head seem like a whole different section, like a beetle, or is the whole bug one piece and the head just peeks out from under the big shell? In the bottom picture (shell side up), which end has the head underneath? Was it alive when you found it? Did it bite you? It's interesting that you've never seen one at all before. I look forward to hearing more about it, so we can try and figure it out! – Sue Saddest Farewell TGO GL Mar 9 '18 at 5:22
  • @NateW it looks black visually, though in the images I took there is some brown on the legs – Ben Ong Mar 12 '18 at 9:41
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    @Sue yes, it is shiny. Not just camera result, it does reflect light. I can't say much about the head. I inspect it via the images I uploaded it is really less than 2cm in length. In the first image the head is on the right side. It is under the shell, not sure if it can extend it out. It is alive but it crawls very slowly, covers about 5 cm in 29 seconds. It did not bite me even when I placed it on my finger. – Ben Ong Mar 12 '18 at 9:46
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    @NateW it appears round but on closer inspection it is slightly longer than wide. – Ben Ong Mar 12 '18 at 9:58
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Based on the poor-quality of the photos (and my limited knowledge of Singapore insects) it would be very difficult to definitively ID this to species.

However, based on the shape and size, you're very likely looking at a species of ladybird beetle (aka ladybug; family Coccinellidae).

Specifically, I think this is a member of the subfamily Chilocorinae.

They are shiny color and usually have no spots or patterns on their wing covers. Their bodies are in round helmet shapes.

To show you an example species from this subfamily, here is a picture of Chilocorus nigrita:

enter image description here

Source: www.NatureLoveYou.sg

Formal Description:

Length 3.2-4.0 mm; width 2.9-3.9 mm.... Elytra black, shiny, with fine punctations. Ventral side including legs and inner margins of elytral epipleura orange yellow to yellowish brown, outer margins of epipleura pitchy brown to black [Source].

Range

This site suggests that this specific species is common in India but also found in Malaysia, but the image above was actually taken in Singapore.

You can try to narrow to a specific species via Booth (2009) or the ID key found here.


Booth, R.G., 1998. A review of the species resembling Chilocorus nigrita (Coleoptera: Coccinellidae): potential agents for biological control. Bulletin of entomological research, 88(4), pp.361-367.

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