Under a sunflower leaf in the garden.
Not appreciable in the picture:
Body length: 1 cm
Antennae: on the sides when at rest, about half the body.
Found in my house in Modena, it might have come in through the window, but there is a chance it was in some plant samples I collected in the Apennines near Reggio Emilia.
First found in Padua
Halyomorpha halys (Stål, 1855) with a egg of some parasitoid, more probably a Tachinid fly