Ectobius is a genus of cockroaches native to the Old World, belonging to the family Ectobiidae (formerly Blattellidae), subfamily Ectobiinae.
The females (length: 12 mm) are usually bigger than the males (length: 10 mm) and have shorter wings covering only 1/3 of their body, while the wings of the males (in the photo's) cover the entire abdomen.

1st, 2nd & 3rd photo: A male. In my yard, Hilversum, The Netherlands, 1 July 2013
4th photo: A male. Putten, The Netherlands, 29 July 2014
5th photo: A male. National Park De Hoge Veluwe, Ede, The Netherlands, 14 July 2021