Diosaccinae

Belongs within: Podogennonta. The Diosaccinae: worldwide sediment dwellers Published 16 May 2021 The harpacticoid copepods have been featured on this site a reasonable number of times now. These tiny crustaceans are among the most numerous animals in the world, both in terms of numbers of individuals and (in certain habitats) numbers of species. And among… Continue reading Diosaccinae

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Categorised as Copepoda

Podoplea

Belongs within: Copepoda.Contains: Polyarthra, Oligoarthra, Poecilostomatoida, Siphonostomatoida, Hemicyclopinidae, Cyclopidae, Cyclopinidae, Chordeumiidae, Lernaeidae, Oithonidae, Cyclopettidae. The Podoplea are a major clade containing all copepods except the Platycopioida and Calanoida. It is characterised by the placement of a mobile joint between the fifth and segments of the trunk, rather than between the sixth and seventh segments as… Continue reading Podoplea

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Categorised as Copepoda

Cyclops

Belongs within: Cyclopidae. Cyclops is a cosmopolitan genus of freshwater copepods characterised by well-defined, angular epimeres on the anterior segments of the body, giving the sides a more or less jagged appearance, and a rudimentary last pair of legs (Sars 1913a). Representatives include the Holarctic species C. strenuus which differs from many of its congeners… Continue reading Cyclops

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Categorised as Copepoda

Lernaeidae

Belongs within: Podoplea. The Lernaeidae are long-bodied freshwater copepods that are ecto- or mesoparasites of fish. Anchor worm Published 27 February 2023 Parasitic lifestyles have evolved in copepods on a number of occasions. Often, these parasites are highly modified, requiring close inspection to even be recognized as copepods. Take, for instance, the anchor worms of… Continue reading Lernaeidae

Cyclopidae

Belongs within: Podoplea.Contains: Halicyclops, Neocyclops, Eucyclops, Acanthocyclops, Diacyclops, Graeteriella, Bryocyclops, Speocyclops, Mesocyclops, Cyclops, Thermocyclops. The Cyclopidae are a group of copepods, most diverse in fresh water, in which both mandibular and maxillary palps are rudimentary (Sars 1913). Characters (from Sars 1913): General form of the body with anterior division more or less dilated, posterior much… Continue reading Cyclopidae

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Categorised as Copepoda

Caligidae

Belongs within: Siphonostomatoida. The Caligidae, sea lice, are a group of marine copepods that are ectoparasitic on fish. <==Caligidae [Caligoida] | i. s.: CaligopsisHL02 | DiphyllogasterHL02 | Nemesis Risso 1826R26 | |–*N. lamna Risso 1826R26 | `–N. robustaB02 | Otrophesa imbricataR26 |–Pupulina van Beneden 1892HL02 |–+–Paralebion Wilson 1911HL02 | `–Synestius Steenstrum & Lütken 1861HL02 |–Lepeophtheirus… Continue reading Caligidae

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Categorised as Copepoda

Splanchnotrophidae

Belongs within: Poecilostomatoida. The Splanchnotrophidae: comfy inside a sea slug Published 27 July 2019 In previous posts, I’ve referred to the great significance of the minute crustaceans known as copepods to aquatic ecosystems. At the time, I was referring to free-living members of this group but the copepods also include a wide range of parasitic… Continue reading Splanchnotrophidae

Leptocaris

Belongs within: Podogennonta. Leptocaris: living on the edge Published 24 February 2019 Some of the most remarkable faunal diversity in the marine environment is to be found in the interstitial spaces between grains of sand. Grazers, predators and scavengers can be found creating entire food webs at scales of less than one millimetre. The minute… Continue reading Leptocaris

Centropagidae

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… Continue reading Centropagidae

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Categorised as Copepoda

Diaptomidae

Belongs within: Copepoda. The Diaptomidae are a group of pelagic freshwater copepods. Characters (from J. M. Bradford-Grieve): Female with rostrum without filaments; rostral margin extends into 2 points. Cephalosome and pedigerous somite 1 separate; pedigerous somites 4 and 5 separate. Posterior corners of prosome in lateral view with 1 acute point, or divided into 2… Continue reading Diaptomidae

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Categorised as Copepoda