Hi everyone, I usually post in the daylilies forum.
Today I found two of these on foliage.
They are all black apart from the almost white stripe on the back. They have long antennas and looking at their legs it looks like they can jump.
Many thanks!

It's a grasshopper of some sort, could be a bush cricket. It might be a nymph, there's plenty of them to search out.

http://www.grasshoppersofeurop...

It could be in the family Tettigoniidae, they have long antennae.

https://www.google.co.uk/searc...

You might be able to ID it on this forum in Italy ..

http://www.entomologiitaliani....

Thank you Janet.
I can't look at insects pictures too much, they hurt my stomach. I'll ask in that italian forum you linked, many thanks.
My husband says it's a common cricket, I don't know insects very well.

There will be a lot of species in Italy Sabrina, many more than in the UK.

I found a nymph of one which looks similar, Pholidoptera griseoaptera. Yours looks black rather than brown, and the white bands on the hind legs are distinctive.

http://www.wildanimalsonline.c...

http://aramel.free.fr/INSECTES...

You will see the adult looks different ..

http://www.discoverlife.org/mp...

http://www.discoverlife.org/mp...

Knowing insects is a complicated process, there's so many insects which most people don't know exist, it's a minefield!

I found this species in Italy, you can see the curved white-yellow part on the side near the head ..

http://www.funghiitaliani.it/?...

It could be the colour varies, or it's a closely related species.

https://en.wikipedia.org/wiki/...

It looks like the first link you posted, so this means they are not adults yet? Are they dangerous for plants?

I respect a lot you and people like you that knows a lot about insects, I just can't stand looking at them, Pretty silly since I have plants in the garden

After the fourth picture I was already feeling disturbed. I guess it's a psicological thing because no insect ever hurt me in any way!

Sorry posted before seeing your second reply. Yes it looks like that. If they are harmful for plants I'll just let them be. I started to hear crickets sing a lot in the fields behind the house, I can't remember of hearing so many and so early.

I edited my post above to add a wiki link ...

The adults are omnivorous, feeding primarily on small insects such as aphids and caterpillars, but eat also plants such as bramble (Rubus species), dandelion (Taraxacum species) and nettles (Urtica species)

https://en.wikipedia.org/wiki/...

It's a keeper!

You might have had bad experiences to make you feel that way. Curiosity might help you overcome that feeling, try looking at them as a funny looking toy. Some are very cute. others ugly but all are interesting!