Glossoscolecidae

Belongs within: Opisthopora.Contains: Glossodrilus, Glossoscolex. Earthworms of the Amazon Published 22 June 2010 This week’s post has been delayed a little: getting hold of some of the references for it required me to enter a real library and locate an actual journal physically printed on paper. Always an experience. Urobenus buritis (no pictures of this… Continue reading Glossoscolecidae

Aphroditiformia

Belongs within: Phyllodocida.Contains: Polynoidae. The Aphroditiformia, scale worms, are marine worms characterised by the presence of dorsal cirri modified into elytra or scales on alternating segments. They include the Aphroditidae, sea mice, in which the dorsum of the relatively short body is also covered in iridescent chaetae. <==Aphroditiformia | i. s.: EulepethidaeRF98 | Faustoscolex gemmatusPTV14… Continue reading Aphroditiformia

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Categorised as Annelida

Serpulinae

Belongs within: Serpulidae. The Serpulinae are tube worms in which one of the radioles of the tentacular crown is modified into an operculum. <==Serpulinae |–Marifugia Absolon & Hrabě 1930H-S86 | `–M. cavatica Absolon & Hrabě 1930H-S86 `–Serpula Linné 1768H62 | i. s.: S. arenaria Linnaeus 1758L58 | S. concharum Langerhans 1880HB-E05 | S. glomerata Linnaeus… Continue reading Serpulinae

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Categorised as Annelida

Nereididae

Belongs within: Phyllodocida. The Nereididae, ragworms, are a group of often large polychaete worms with well-developed jaws. They are mostly marine though some will occasionally enter fresh water or even emerge onto land. Characters (from Howell 1962): Body long, many-segmented; two large jaws and often paragnaths in eight groups; first two pairs of parapodia simple,… Continue reading Nereididae

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Categorised as Annelida

Lumbricidae

Belongs within: Lumbricoidea. The Lumbricidae are a cosmopolitan family of earthworms including many human-associated species such as the nightcrawler Lumbricus terrestris. The manure worm Eisenia fetida is found in rotting organic matter and is widely used in composting. Characters (from Schwert 1990): Clitellum beginning on or behind segment 19; male pores present on segment 15… Continue reading Lumbricidae

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Categorised as Annelida

Hirudinea

Belongs within: Clitellata.Contains: Arhynchobdellida. The Hirudinea, leeches, are parasitic and predatory worms in which the posterior end of the body is modified into a sucker for locomotion. Synapomorphies (from Ax 1999): Body divided into prostomium and 30 segments, posterior four segments forming sucker, stronger annulation through more annuli per segment. Nervous system with 31 pairs… Continue reading Hirudinea

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Categorised as Annelida

Glyceriformia

Belongs within: Phyllodocida. The glyceriforms: stabby worms and grabby worms Published 20 February 2021 Historically, the annelid worms have been considered a difficult group to classify. Whereas most of the recognised families have been fairly well established, higher taxa uniting these families have tended to be a bit on the vague side. Nevertheless, there are… Continue reading Glyceriformia

Boccardia

Belongs within: Spionidae. How the worm turns (into a worm) Published 14 August 2018 Those of you who have suffered through some of my posts on turrids may recall me discussing the subject of how differences in the mode of development of marine organisms relate to their classification. Features that were once considered of high… Continue reading Boccardia

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Categorised as Annelida

Megascolecidae

Belongs within: Acanthodrilidae.Contains: Woodwardiella, Notoscolex, Plutellus, Megascolex, Argilophilini, Amynthas, Pheretima. Pontodrilus: earthworms by sea Published 14 June 2017 Earthworms are primarily a terrestrial and freshwater group, sensitive to changes in the quality of their habitat. But there are some earthworm species that are tolerant of more saline environments. One such species is Pontodrilus litoralis, a… Continue reading Megascolecidae

Glossodrilus

Belongs within: Glossoscolecidae. A place for worms Published 18 December 2016 When we think of endangered species, we tend to focus on the charismatic vertebrates, such as pandas, parrots, tigers or turtles. But endangered species may come from all walks, crawls or wriggles of life. Have you ever considered, for instance, the plight of endangered… Continue reading Glossodrilus

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Categorised as Annelida