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15-20mm long. Brown legs, head, casing/wings (no flight witnessed). Black body with protruding back part. Long antennae. Very fast running speed. Seemingly keenly aware of surroundings.

Is this some sort of small cockroach?It's a tiny wine glass running bug

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    $\begingroup$ Hello and welcome to Bio.SE! Take the tour to learn about the site and earn yourself your first badge. Have a nice stay! $\endgroup$ – LinuxBlanket Oct 14 '18 at 0:00
  • $\begingroup$ The photo is not very clear, the two spikes at the back identify it as a cockroach, a "forest cockroach", probably a "german cockroach", perhaps she is pregnant? I think they prefer slightly warmer, dryer climates than the UK, whereas the UK is mostly home to slower black beetles, elsewhere in europe, you can turn a stone over and there will be 5 forest cockroaches, which are very fast, and actually quite pretty and silvery in their own way. $\endgroup$ – com.prehensible Oct 14 '18 at 10:09
  • $\begingroup$ en.wikipedia.org/wiki/German_cockroach $\endgroup$ – com.prehensible Oct 14 '18 at 10:16
  • $\begingroup$ Thank you com.prehensible. In the picture of the German Cockroach with ootheca, the ootheca looks the same shape but different colour as the one I observed. This cockroach was certainly very fast. I saw her in the kitchen in the evening so that also fits what wikipedia has to say. $\endgroup$ – David Watkins Oct 14 '18 at 17:14

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