Biology:Xylopaguridae
| Xylopaguridae | |
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| Xylopagurus rectus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Anomura |
| Superfamily: | Paguroidea |
| Family: | Xylopaguridae Gašparič, Fraaije, Robin & de Angeli, 2016[1] |
| Type genus | |
| Xylopagurus A. Milne-Edwards, 1880
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Xylopaguridae are a family of hermit crabs of the order Decapoda.[2][3] It was erected in 2016 to accommodate one new genus, Prexylopagurus, and three existing genera that had previously been placed in Paguridae. They occur in the Atlantic, Indian, and Pacific Oceans.[1]
Some sources do not recognize Xylopaguridae and list the species and genera that were transferred to it under their original family, Paguridae.[4]
Evolution
The oldest record of the family is Paguritergites yvonnecooleae,[1] the only known species of its genus,[5] from the upper Albian (mid-Cretaceous) of northwest Spain.[1] The family appears to have evolved in the Tethys Ocean.[1]
Description and ecology
Xylopagurids have an elongated, subcylindrical carapace. They are adapted to live in cavities such as hollow pieces of bamboo and driftwood, or in empty polychaete tubes.[1] Unlike typical hermit crabs, they inhabit open-ended cavities which they enter head-first. The posterior opening of the cavity is blocked by a strongly calcified portion of the abdomen, whereas a massive, strongly armed right cheliped protects the anterior opening.[6]
Xylopagurids occur from shallow waters to depths of several hundreds of meters, the record being Prexylopagurus caledonicus dredged from a depth of 591 metres.[1]
Genera
There are four genera, two of which are extant:[2]
- Gašparič, Fraaije, Robin & de Angeli, 2016 Beschin, De Angeli, Checchi & Zarantonello, 2012
- A. Milne-Edwards, 1880 †Paguritergites
- [[†Lessinipagurus]] Fraaije, Artal, Van Bakel, Jagt & Klompmaker, 2013
- Prexylopagurus Xylopagurus
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Gašparič, R.; Fraaije, R.H.B.; Robin, N.; De Angeli, A. (2016). "The first record of paguroids from the Eocene of Istria (Croatia) and further phylogenetic refinement of the Paguroidea (Crustacea, Anomura)". Bulletin of Geosciences 91 (3): 467–480. http://www.geology.cz/bulletin/fulltext/1616_Gasparic_161125.pdf.
- ↑ 2.0 2.1 DecaNet (2024). "Xylopaguridae Gašparič, Fraaije, Robin & de Angeli, 2016". WoRMS. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=1514996.
- ↑ "†family Xylopaguridae Gasparic et al. 2016". Paleobiology Database. Fossilworks. http://fossilworks.org/?a=taxonInfo&taxon_no=404205.
- ↑ E.g., "Paguridae". Species. GBIF. http://www.gbif.org/species/4531.
- ↑ DecaNet (2024). "Paguritergites Fraaije, Artal, Van Bakel, Jagt & Klompmaker, 2013 †". WoRMS. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=1611688.
- ↑ Lemaitre, Rafael (1995). "A review of hermit crabs of the genus Xylopagurus A. Milne Edwards, 1880 (Crustacea: Decapoda: Paguridae), with description of two new species". Smithsonian Contributions to Zoology 570: 1–27. doi:10.5479/si.00810282.570.i. https://repository.si.edu/bitstream/handle/10088/5134.
Wikidata ☰ Q124215314 entry
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