Linguimaera, Pirlot, 1936

Krapp-Schickel, T., 2003, Linguimaera Pirlot, 1936 (Crustacea, Amphipoda, Melitidae), a valid genus, Memoirs of Museum Victoria 60 (2), pp. 257-283 : 260

Key to genera similar to Linguimaera

1. Gnathopod 2 asymmetrical..................... 2

— Gnathopod 2 symmetrical...................... 5

2. Telson fused halfways or more, distally only emarginate 3

— Telson deeply cleft............................ 4

3. Metasome and urosome minutely toothed dorsally, beset with plumose setae; mandibular palp article 3 as short as article 1.......................... Ceradomaera

— Metasome and urosome smooth; mandibular palp article 3 clearly longer than article 1.............. Zygomaera

4. Eyes round, mandibular palp article 2 equal to article 3, distal robust setae of telson longer than telson length....................................... Anamaera

— Eyes reniform, mandibular palp article 3 shorter than article 2, distal robust setae of telson shorter than telson length.................................. Linguimaera

5. Dorsally carinate or toothed..................... 6

— Dorsally smooth............................. 8

6. Gnathopod 2 palmar corner rectangular, urosomites 1, 2 with dorsal teeth..................... Maeracoota

— Gnathopod 2 palmar corner absent or less than 90°... 7

7. Epimeron 3 smooth or carinate, urosome carinate......................................... Mallacoota

— Epimeron 3 with serrations, urosome smooth.......................................... Parelasmopus

8. Mandibular palp article 3 falcate.......... Elasmopus

— Mandibular palp article 3 linear.................. 9

9. Mandibular palp article 1 distally tooth-shaped, lengthened .......................................... 10

— Mandibular palp article 1 rounded............... 11

10. Gnathopod 2 dactylus outer margin densely setose; maxillae not fully setose................... Maera

— Gnathopod 2 dactylus outer margin with 1 seta; maxilla 1 inner plate fully setose, maxilla 2 with oblique facial row of setae............................. Ceradocus

11. Pereopod 5 basis not longer than coxa 5; uropod 3 very short, rami scarcely longer than peduncle.... Lupimaera

— Pereopod 5 basis longer than coxa 5; uropod 3 rami clearly longer than peduncle................... 12

12. Gnathopods 2 without palmar corner, dactyli smooth; uropod 3 lanceolate, medially widened, distally pointed.................................... Othomaera

— Gnathopod 2 distally widened, palmar corner well defined .......................................... 13

13. Palmar corner subrectangular, pereopod 5-7 dactylus simple, uropod 3 slightly unaequiramous.... Maeropsis

— Palmar corner rectangular, pereopods 5–7 with bifid dactylus, uropod 3 aequiramous........ Quadrimaera