Key to the European larvae of Cueta

1 Ventral side of the head with a pair of dark elongated markings; VIII abdominal sternite provided with broad and robust digging setae of which the median pairs are coupled on a common protuberance; odontoid processes very small (Figs. 2D, 23)............................................................................................... C. lineosa

- Ventral side of the head unmarked; VIII abdominal sternite provided with thin and bristle-like digging setae, without median pairs of digging setae raised on a protuberance, odontoid processes large (Figs. 2C, 22)........................ C. beieri