Je demande plus d'aide avec Cerambycidae

Bonjour Alain:
I request you again help with this Cerambycidae:
Picure Nº 1:
Paraguay: Cordillera: Naranjo. 25. IV. 2004
largura: 9 mm

https://servimg.com/view/11144883/46

Picture Nº 2:
Paraguay Cordillera: Naranjo. 21.XI 2004

Picture Nº 3: Paraguay:Central: Areguá. 233 . II. 2005
Latgura: 13 Mm
https://servimg.com/view/11144883/48

Picture Nº 4:
I identified it as Piezocera ?, but the Pronoto I find very short reason why it can that it is another genera ? Paraguay: Concepción. Zanja Morotí. 20. X. 2005.
Largura: 15 Mm

My regards:

https://servimg.com/view/11144883/49



I thank you your valuable help,

My regards

Bonjour
excusez l'image Nº 2 qu'il n'existe pas encore, plus tard je le mettrai,
Salud a todos,

Carlos