Genus Microra Monniot C., 1983
Diagnosis: Body dorsoventrally depressed. Prosome consisting of cephalosome, 3 free pedigerous somites and brood pouch. Fourth pedigerous somite longer than 3 anterior pedigerous somites combined. Fifth pedigerous somite completely fused with fourth. Free urosome 5- segmented, comprising genital somite and 4 abdominal somites. Anal somite posteroventrally protuberant, wellsclerotized. Caudal ramus armed with 2 claws and 4 setae. Antennule 7-segmented. Antenna 4-segmented; basis with exopodal seta distally; compound distal endopodal segment armed with 7 setae plus terminal claw. Mandible with weakly bilobed coxal gnathobase, both lobes spinulose, without teeth; basiswith 1 seta; exopod and endopod unsegmented, both armedwith 4 setae. Maxillule forming tapering lobe bearing 4 setae. Maxilla 5-segmented; syncoxa unarmed; basiswith 3 setae; third and fourth segments each with 1 seta; fifth segment with 3 setae. Maxilliped lobate with 2 setae distally. Legs 1–4 with 3-segmented exopods and 2-segmented endopods. Inner coxal seta absent and outer seta on basis small in all legs 1–4. Basis of leg 1 lacking innerdistal element. Endopods much smaller than exopods. First endopodal segment unarmed in all legs. Armature formula as follows:
| Coxa | Basis | Exopod | Endopod | |
|---|---|---|---|---|
| Leg 1 | 0-0 | 1-0 | I-0; I-0; III, 3 | 0-0; 1, 2, 0 |
| Leg 2 | 0-0 | 1-0 | 1-0; 1-0; 8 | 0-0; 2, 2, 0 |
| Leg 3 | 0-0 | 1-0 | 1-0; 1-0; 7 | 0-0; 2, 2, 0 |
| Leg 4 | 0-0 | 1-0 | 1-0; 1-0; 7 | 0-0; 1, 2, 1 |
Leg 5 represented by 2 small digitiform processes, each bearing apical seta.
Type species: Microra angulata Monniot C., 1983, by original designation.
Remarks. This genus has remained monotypic since itsdiscovery.Inhisoriginaldiagnosisof thegenus Monniot (1983) highlighted the reduced size of leg 1, the presence of a single exopodal seta on the 3-segmented antenna, the 1-segmented endopods of legs 1 to 4, and the presence of 2 claws on the caudal rami. Here we confirm that the endopods are actually 2-segmented, each comprising a small unarmed proximal segment and a setiferous second segment.