Belongs within: Copepoda.
The Centropagidae are a group of pelagic copepods found in both fresh and salt water.
Characters (from J. M. Bradford-Grieve): Female with rostrum with 2 filaments; rostral margin not extended. Cephalosome and pedigerous somite 1 separate; pedigerous somites 4 and 5 separate. Posterior corners of prosome in lateral view bluntly rounded, or with 1 acute point, or divided into 2 protrusions; dorsal view symmetrical, or asymmetrical. Urosome with 3 free somites, or with 4 free somites. Genital double-somite asymmetrical in dorsal view; gonopores close together and totally covered by single genital operculum; without seminal receptacles. Caudal rami symmetrical. Antenna 1 with 24-25 free segments; ancestral segments X and XI partly fused. Antenna 2 exopod with 6-7 free segments; 10-11 setae; basis and endopod separate. Mandible basis with 4 setae; endopod terminal segment with 7-9 setae. Maxilla 1 basal exite seta present; exopod extends short of endopod distal border. Maxilla 2 coxal epipodite seta absent; endopod setae normal, or claw-like. Maxilliped coxal endite 2 with 3 setae. Leg 1 basis inner distal seta inserted directly on surface of joint; outer seta absent; endopod with 3 segments; exopod with 3 segments; exopod segment 1 with outer distal spine, or without outer distal spine; exopod segment 3 with 4 inner setae. Leg 2 endopod with 3 segments; exopod with 3 segments; exopod segment 3 with 2 outer spines, or with 3 outer spines. Leg 3 basis outer distal spine absent; endopod segment 3 with 5-8 setae. Legs 3 and 4 endopod with 3 segments; exopod with 3 segments; exopod segment 3 with 2 outer spines, or 3 outer spines; exopod segment 3 with 5 inner setae. Leg 4 endopod segment 3 with 4-7 setae. Legs 2-4 surfaces naked; terminal spine with outer border serrated. Leg 5 present; similar to legs 2-4; coxa inner border without seta; exopod segment 2 inner distal border extended into large spine completely fused to segment. Leg 5 exopod segment 3 outer border with 2 spines; inner border with 2 setae, or 4 setae. Male with urosome symmetrical in dorsal view, or asymmetrical in dorsal view. Mouthparts well-developed. Antenna 1 geniculate on right. Maxilliped endopod segments 5 and 6 with outer setae normal. Right leg 5 uniramous, or biramous; endopod 2-segmented, or 3-segmented; exopod 1-3-segmented, may be similar to other legs or may be highly modified into grasping organ. Left leg 5 uniramous, or biramous; endopod 2-segmented, or 3-segmented; exopod 2-3-segmented, may be similar to other legs or may be highly modified.
<==Centropagidae |--PseudoboeckellaF45 |--Hemiboeckella searli Sars 1912F45 |--EurytemoraD01 | |--E. affinusK-M02 | |--E. americana Williams 1906 (see below for synonymy)H64 | |--E. compositaH64 | |--E. foveola Johnson 1961H64 | |--E. gracilicauda Akatova 1949H64 | |--E. herdmani Thompson & Scott 1897H64 | |--E. pacifica Sato 1913 [incl. E. johanseni Willey 1920]H64 | |--E. raboti Richard 1897 [=E. affinis var. raboti]H64 | `--E. veloxD01 |--Gladioferens Henry 1919N44 | |--G. brevicornis Henry 1919N44 | |--G. gracilis Kiefer 1931N44 | |--G. inermis Nicholls 1944N44 | |--G. pectinatus (Brady 1899) [=Centropages pectinatus]N44 | |--G. spinosus Henry 1919N44 | `--G. subsalaria Percival 1937N44 |--Centropages Kroyer 1849F44 | |--C. australiensis Fairbridge 1944F44 | |--C. bradyi (Wheeler 1901)B26 | |--C. dorsispinatusZS10 | |--C. hamatus (Lilljeborg 1853)F44 | |--C. kroyeri (Giesbrecht 1892)F44 | |--C. longicornis (Mori 1932)F44 | |--C. ponticus (Karawiew 1895)F44 | `--C. typicus (Kroyer 1848)F44 |--Brunella Smith 1909N44 | |--*B. tasmanica Smith 1909N44 | |--B. ampulla Searle 1911N44 | |--B. australis Searle 1911N44 | |--B. expansa Sars 1912N44 | |--B. longicornis Searle 1912N44 | |--B. salina Nicholls 1944N44 | |--B. steeli Henry 1924N44 | `--B. viridis Searle 1911N44 |--Isias Boeck 1865B64 | |--*I. clavipes Boeck 1865B64 | |--I. tropica (Sewell 1924)B64 | `--I. uncipes Bayly 1964B64 |--CalamoeciaB64 | |--C. ampullaTDC06 | |--C. baylyiPH10 | |--C. clitellataB64 | |--C. halseiPH10 | |--C. salinaB64 | |--C. tasmanicaB64 | `--C. ultimaPH10 |--Limnocalanus macrurusB64, VVP01 |--SinocalanusB64 `--Boeckella Deguerne & Richard 1889F45 |--B. ambigua Percival 1937F45 |--B. asymmetrica Searle 1914F45 |--B. bergi Richard 1897 [incl. B. bergi var. cornuta Brehm 1937, B. bergi var. serrifera Brehm 1937]F45 |--B. coronaria Henry 1922F45 |--B. delicata Percival 1937F45 |--B. dentifera Brehm 1935F45 |--B. fluvialis Henry 1922F45 |--B. gracilipes Daday 1901F45 |--B. gracilis Daday 1902F45 |--B. hamata Brehm 1928F45 |--B. insignis Smith 1909F45 |--B. lacuna Fairbridge 1945F45 |--B. longiseta Smith 1909F45 |--B. major Searle 1938F45 |--B. meteoris Kiefer 1927F45 |--B. michaelseni Mrazek 1901F45 |--B. minuta Sars 1896F45 |--B. nyoraensis Searle 1912F45 |--B. occidentalis Marsh 1906F45 |--B. opaqua Fairbridge 1945F45 |--B. orientalis Sars 1903F45 |--B. pellucida Fairbridge 1945F45 |--B. poopoensis Marsh 1906F45 |--B. propinqua Sars 1904F45 |--B. pseudocheles Searle 1912F45 |--B. rahmi Brehm 1935F45 |--B. robusta Sars 1896F45 |--B. rubra Smith 1909F45 |--B. saycei Sars 1908F45 |--B. symmetrica Sars 1908F45 |--B. tenera Sars 1912F45 `--B. triarticulata Thompson 1883 (see below for synonymy)F45
Boeckella triarticulata Thompson 1883 [incl. B. triarticulata var. oblonga Brehm 1939, B. triarticulata var. quarta Brehm 1939, B. triarticulata var. sarsi Brehm 1939]F45
Eurytemora americana Williams 1906 [incl. E. kieferi Smirnov 1931, E. thompsoni Willey 1923, E. transversalis Campbell 1930]H64
*Type species of generic name indicated
References
[B64] Bayly, I. A. E. 1964. A new species of Isias (Copepoda: Calanoida) from the Brisbane River estuary, and a comparison of the Australasian centropagid genera. Australian Journal of Marine and Freshwater Research 15 (2): 239–247.
[B26] Bigelow, H. B. 1926. Plankton of the offshore waters of the Gulf of Maine. Bulletin of the Bureau of Fisheries 40 (2): 1–509.
[D01] Daday, E. 1901. Édesvizi mikroszkópi állatok [Mikroskopische Süsswasserthiere]. In: Horváth, G. (ed.) Zichy Jenő Gróf Harmadik Ázsiai Utazása [Dritte Asiatische Forschungsreise des Grafen Eugen Zichy] vol. 2. Zichy Jenő Gróf Harmadik Ázsiai Utazásának Állattani Eredményei [Zoologische Ergebnisse der Dritten Asiatischen Forschungsreise des Grafen Eugen Zichy] pp. 375–470. Victor Hornyánszky: Budapest, and Karl W. Hierseman: Leipzig.
[F44] Fairbridge, W. S. 1944. Marine copepods from Western Australia. Series II. Two pelagic copepods from Cockburn Sound. Journal of the Royal Society of Western Australia 28: 209–217.
[F45] Fairbridge, W. S. 1945. West Australian fresh-water calanoids (Copepoda). I.–Three new species of Boeckella, with an account of the developmental stages of B. opaqua n. sp. and a key to the genus. Journal of the Royal Society of Western Australia 29: 25–65.
[H64] Heron, G. A. 1964. Seven species of Eurytemora (Copepoda) from northwestern North America. Crustaceana 7 (3): 199–211.
[K-M02] Klein-MacPhee, G. 2002. Temperate basses. Family Moronidae. In: Collette, B. B., & G. Klein-MacPhee (eds) Bigelow and Schroeder’s Fishes of the Gulf of Maine 3rd ed. pp. 374–389. Smithsonian Institute Press: Washington.
[N44] Nicholls, A. G. 1944. Littoral Copepoda from South Australia. (II) Calanoida, Cyclopoida, Notodelphyoida, Monstrilloida and Caligoida. Records of the South Australian Museum 8 (1): 1–62.
[PH10] Pinder, A. M., S. A. Halse, R. J. Shiel & J. M. McRae. 2010. An arid zone awash with diversity: patterns in the distribution of aquatic invertebrates in the Pilbara region of Western Australia. Records of the Western Australian Museum Supplement 78 (1): 205–246.
[TDC06] Timms, B. V., B. Datson & M. Coleman. 2006. The wetlands of the Lake Carey catchment, northeast Goldfields of Western Australia, with special reference to large branchiopods. Journal of the Royal Society of Western Australia 89 (4): 175–183.
[VVP01] Väinölä, R., J. K. Vainio & J. U. Palo. 2001. Phylogeography of “glacial relict” Gammaracanthus (Crustacea, Amphipoda) from boreal lakes and the Caspian and White Seas. Canadian Journal of Fisheries and Aquatic Science 58: 2247–2257.
[ZS10] Zhang, G.-T., S. Sun, Z.-L. Xu & Q.-L. Zhang. 2010. Unexpected dominance of the subtropical copepod Temora turbinata in the temperate Changjiang River estuary and its possible causes. In: China-Russia Bilateral Symposium: Proceedings of the China-Russia Bilateral Symposium of “Comparison on Marine Biodiversity in the Northwest Pacific Ocean”, 10–11 October 2010, Qingdao (China) pp. 100–102. Institute of Oceanology, Chinese Academy of Sciences; A. V. Zhirmunsky Institute of Marine Biology, Far East Branch of the Russian Academy of Sciences.