Eleven-year-old Ariana Lee was disgusted to find a cockroach in her breakfast boysenberries.

APN News & Media reports that the Rotorua girl and her family (right, pic from APN) were having cereal and boysenberries for breakfast on Wednesday when they made the stomach-turning discovery.

Ariana’s mother, Zarnia Lee, said her husband, Jymel Webber, who is visually impaired, was the first to open the tin of Pams boysenberries in syrup and eat from it. Her son Taine, 11, and daughter Tayla, 9, also ate some and when Ariana emptied the last of them from the tin into her cereal, she noticed something black fall into her bowl.

When she looked closer, she realised it was a cockroach and screamed for her mother.

"The cockroach was pretty purple, I could tell it had been in there a while," Mrs Lee said.

Mrs Lee rang Pams’ customer service hotline and gave the details of her complaint. She received a letter of apology from Pams and two $10 vouchers for Pak’N Save.