This insect flew into my house in Singapore while it was raining. Size is around 1.5 inches. What is this?

enter image description here

enter image description here

  • 1
    $\begingroup$ Time to crush it $\endgroup$ – user35897 Mar 22 '19 at 17:51
  • $\begingroup$ Please edit your post to provide your location and the approximate size of the insect. See here for guidelines for writing species-identification questions. $\endgroup$ – theforestecologist Mar 22 '19 at 17:57
  • 3
    $\begingroup$ Also, I wouldn't recommend crushing it. At the very least, a better photo (especially showing the insect's head in better detail) could result in you getting a better ID. $\endgroup$ – theforestecologist Mar 22 '19 at 18:04
  • 1
    $\begingroup$ What we need: biology.stackexchange.com/tags/species-identification/info $\endgroup$ – Rob Mar 23 '19 at 3:46
  • $\begingroup$ My own "wish list" would include extreme close-ups (if possible) of the feet; the top photo suggests a "tarsal formula" of 5-5-4 (five segments in the front and middle feet, four segments in the hind), which would place this in the infraorder Cucujiformia (which group includes most of the beetles, so narrowing it that far isn't as much help as it could be). $\endgroup$ – Arthur J Frost Mar 26 '19 at 0:13

This is a beetle Coleoptera, possibly from the family of the 'ground beetles' Carabidae
As this family is one of the most speciose animal families, pinpointing an exact species will be difficult, especially in the tropics. I think your specimen belongs to the genus of Carabus, they look similar as you can see on the picture from wikipedia commons below:
- Long legs.
- Often a distinct pattern of dots and stripes on the shields.
- Long antenna with many segments

EDIT: As @theforestecologist pointed out, the body shape more resembles the family of Meloidae. Most Meloidae don't have dots on the shield, but for example lytta does. https://bg.m.wikipedia.org/wiki/Файл:Lytta_aenea.JPG

enter image description here

| improve this answer | |
  • $\begingroup$ Body/wing shape doesn't quite match many Carabidae. I was actually thinking the OP's specimen looked more like Meloidae. Lytta sayi which is found in North America is very similar, but I do not known Singapore insects well and thus do not know any relevant relatives -- a quick search didn't pull up any good choices. $\endgroup$ – theforestecologist Mar 23 '19 at 15:25
  • $\begingroup$ @theforestecologist Meloidae often do not have the dots on the shield, but you might be right about the body shape. Hmm, dunno. $\endgroup$ – RHA Mar 23 '19 at 16:32
  • $\begingroup$ @theforestecologist I did find any good choices either. I've edited my answer to reflect your doubt (and my own). Or should I remove the answer now? $\endgroup$ – RHA Mar 23 '19 at 16:56
  • $\begingroup$ I'd keep the answer, since our back-and-forth should be enough to inform others that this answer is not definitive. I think if you're actually doubtful as you indicate in your last comment, that you should edit your post further to make that uncertainty more explicit -- e.g., replace "it is" with "it possibly could be" or something similar...Perhaps someone more familiar with the fauna of Singapore can use this discussion as a jumping off point. Thanks. $\endgroup$ – theforestecologist Mar 23 '19 at 19:51

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.