Key to the mature larvae of the genus Larinus

1. More than 40 setae on pronotum (Fig. 23). Endocarina absent (Figs. 15, 16).......... L. (s. str.) pollinis (Laicharting, 1781)

- Less than 15 setae on pronotum (Figs. 9, 37,51). Endocarina present (Figs. 1, 2, 29, 30, 43, 44)....................... 2

2. Abdominal segment I–VII without prs, only 5 pds, and 1 dpls (Fig. 10). Spiracular area in meso- and metathoax with only one seta (ss) (Fig. 9)...................................................... L. (Larinomesius) obtusus Gyllenhal, 1835

- Abdominal segment I–VII 1 prs, 7 pds, 2 dpls and 2 vpls (Figs. 38, 52). Spiracular area in meso- and metathoax with three or four setae (ss) (Figs. 37, 51)............................................................................. 3

3. Setae on thorax and abdomen long (Figs. 37–39). Abdominal segment VIII with 2 dpls and 2 vpls (Fig. 39). Spiracular area in meso- and metathoax with three setae (ss) (Fig. 37). Des 4 close to des 3 (Figs. 29, 30)................................................................................................... L. (Phyllonomeus) sturnus (Schaller, 1783)

- Setae on thorax and abdomen relatively short (Figs. 51–53). Abdominal segment VIII. with 1 dpls and 1 vpls (Fig. 53). Spiracular area in meso- and metathoax with four setae (ss) (Fig. 51). Des 4 close to des 5 (Figs. 43, 44)......................................................................................... L. (Phyllonomeus) turbinatus Gyllenhal, 1836