Limnoria, Leach, 1814

Castelló, José, 2011, The genus Limnoria (Limnoriidae, Isopoda, Crustacea) in Europe, including a key to species, Zootaxa 2968 (1), pp. 1-25 : 24

Key to the European species of Limnoria

1 Flagellum of antenna 2 with 4 articles..................................................................... 2

- Flagellum of antenna 2 with 5 articles..................................................................... 3

2 Middorsal longitudinal carina on pleonite 5........................................................ L. lignorum

- Sculpture of pleonite 5 not as above...................................................................... 4

3 Pereopods 4–5 with ventral comb seta on carpus............................................... L. quadripunctata

- Pereopods 4–5 without ventral comb seta on carpus.......................................................... 6

4 Middorsal subparallel longitudinal carinae on pleonite 5............................................ L. mazzellae *

- Y-shaped carina on pleonite 5............................................................................ 5

5 Mandible with rasp and file..................................................................... L. carinata

- Mandible lacking rasp....................................................................... L. turae n. sp.

6 Middorsal subparallel longitudinal carinae on pleonite 5............................................. L. mazzellae *

- V-shaped carina on pleonite 5............................................................................ 7

7 Pleotelson dorsally with the two posterior carinae not surpassing the posterior margin of the ventral pleopodal cavity................................................................................................. L. tripunctata

- Pleotelson dorsally with the two diverging posterior carinae, often bearing tubercles, and surpassing the posterior margin of the ventral pleopodal cavity. Posterior dorsal margin of pleotelson with stout, prominent, rounded tubercles....... L. tuberculata

(*) L. mazzellae may have 4 or 5 flagellar articles of antenna 2.