Maeridae Krapp-Schickel 2008
Creators: name: Myers, A
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Maeridae

description: Maeridae Krapp-Schickel, 2008 a (Lowry & Hughes, 2009)
Type genus. Maera Leach, 1814.
Diagnostic description. Body laterally compressed or subcylindrical. Eyes well developed or absent, if present then round, ovoid, reniform, lageniform or subrectangular. Antennae 1–2 calceoli absent. Antenna 1 subequal in length to, or longer than antenna 2; peduncular article 1 shorter than, subequal to, or longer than article 2; article 2 longer than article 3; article 3 shorter than article 1; peduncular articles 1–2 not geniculate; accessory flagellum long, short or minute. Antenna 2 peduncular article 1 not enlarged. Mandible molar triturative; palp symmetrical or absent. Maxilla 1 basal endite setose along medial margin or apically setose; palps symmetrical. Maxilla 2 basal endite with or without oblique setal row. Labium inner lobes present, vestigial or absent. Coxal gills on pereopods 2–6, not stalked; sternal gills absent; sternal blisters absent; oostegites fringing setae simple. Gnathopod 1 subchelate; similar in males and females (not sexually dimorphic); smaller (or weaker) than or similar in size to gnathopod 2; propodus palm without robust setae along palmar margin. Gnathopod 2 Gnathopod 1 subchelate; dis similar in males and females (sexually dimorphic); carpus not produced along posterior margin of propodus, projecting between merus and propodus. Pereopods 3–4 not sexually dimorphic. Pereopod 4 with well developed posteroventral lobe or with small posteroventral lobe or without posteroventral lobe. Pereopod 5 shorter than or subequal in length to pereopod 6; coxa with posteroventral lobe or with large anteroventral lobe or with small anteroventral lobe or without lobes. Pereopod 7 subequal in length to, or longer than pereopod 5. Pleonites 1–3 without dorsal carinae. Urosomites 1–3 free; with or without slender or robust dorsal setae. Urosomite 1 without large distoventral robust seta. Urosomite 2 with pair of dorsal concavities each with 1–3 small setae or without dorsal setae. Uropod 1 with 1 or 2 basofacial robust setae or without basofacial robust setae. Uropod 3 sexually dimorphic or not; biramous, without plumose setae; endopod shorter than or subequal to exopod. Telson deeply cleft to entire; dorsal or lateral robust setae present or absent; apical robust setae present or absent.
Included genera. Anamaera Thomas & Barnard, 1985 a; Anelasmopus Oliveira, 1953; Animoceradocus G. Karaman, 1984d; Austromaera Lowry & Springthorpe, 2005; Bathyceradocus Pirlot, 1934; Beaudettia J.L. Barnard, 1965; Ceradocoides Nicholls, 1938; Ceradocopsis Schellenberg, 1926; Ceradocus Costa, 1853; Ceradomaera Ledoyer, 1973; Clessidra Krapp-Schickel & Vader, 2009; Coxomaerella G. Karaman, 1981c; Dumosus Thomas & Barnard, 1985 b; Elasmopoides Stebbing, 1908; Elasmopus Costa, 1853; Glossomaera Krapp- Schickel, 2009; Hamimaera Krapp-Schickel, 2008 a; Hoho Lowry & Fenwick, 1983; Ifalukia J.L. Barnard, 1972 a; Jerbarnia Croker, 1971; Linguimaera Pirlot, 1936; Lupimaera Barnard & Karaman, 1982; Maera Leach, 1814; Maeracoota Myers, 1997; Maerella Chevreux, 1911 b; Maeropsis Chevreux, 1919; Mallacoota J.L. Barnard, 1972 a; Megaceradocus Mukai, 1979; Metaceradocoides Birstein & Vinogradov, 1960; Meximaera J.L. Barnard, 1969 c; Othomaera Krapp-Schickel, 2000; Paraceradocus Stebbing, 1899 b; Parapherusa Haswell, 1879 b; Parelasmopus Stebbing, 1888; Pseudelasmopus Ledoyer, 1978; Quadrimaera Krapp-Schickel & Ruffo, 2000; Quadrivisio Stebbing, 1907; Ruffomaera Krapp-Schickel, 2008 b; Saurodocus Yerman & Krapp-Schickel, 2008; Spathiopus Thomas & Barnard, 1985 a; Thalassostygius Vonk, 1990; Wimvadocus Krapp-Schickel & Jarrett, 2000; Zhadia, Lowry & Fenwick, 1983; Zygomaera Krapp-Schickel, 2000.
Habitat. Marine, epigean.
Remarks. Maeridae is very similar to Hadziidae. They are separated by the coxal gills which are stalked in hadziids. Maeridae is also very similar to Melitidae. They are separated by the head shape of lateral cephalic lobe; gnathopod 1 with robust setae along palm; the form of the first and second uropods and the inner ramus of uropod 3.
Distribution. Cosmopolitan.
description: Published as part of Myers, A, 2013, A Phylogeny and Classification of the Senticaudata subord. nov. (Crustacea: Amphipoda), pp. 1-80 in Zootaxa 3610 (1) on pages 36-37, DOI: 10.11646/zootaxa.3610.1.1, http://zenodo.org/record/283309