Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Pycnogonida
Ordo: Pantopoda
Familia: Pycnogonidae
Genera: Clotenopsa - Pentapycnon - Pycnogonum
References
Sirvid, P.J. et al. 2010: [Chapter] SIX Phylum ARTHROPODA CHELICERATA horseshoe crabs, arachnids, sea spiders. Pp. 50-89 in Gordon, D.P. (ed.): New Zealand inventory of biodiversity. Volume 2. Kingdom Animalia. Chaetognatha, Ecdysozoa, ichnofossils. Canterbury University Press, Christchurch, New Zealand. ISBN 978-1-87725793-3
Pycnogonidae is a family of sea spiders.
Characteristics
Most sea spiders in the class Pycnogonida have appendages on the anterior end of the body called chelifores which are used for gathering food and palps which bear sensory organs. Members of the family Pycnogonidae have neither of these, instead using their proboscis to suck juices from their prey. On the first segment of the trunk of male family members there are ovigerous legs on which the larvae are carried. The females do not have these appendages.[2] Like most sea spiders, species in this family have four pairs of legs, except for three species (Pentapycnon bouvieri, P. charcoti, and P. geayi) with five pairs.[3][4][5]
Genera
The World Register of Marine Species lists the following genera:[1]
Pentapycnon Bouvier, 1910
Pycnogonum Bruennich, 1764
Pycnopallene Stock, 1950
References
Pycnogonidae World Register of Marine Species. Retrieved 2011-11-22.
Family Pycnogonidae Marine Species Identification Portal. Retrieved 2011-11-22.
Bezerra, Luis; Rabay, Soraya; Matthews-Cascon, Helena (2017-04-24). "First record of Pentapycnon geayi Bouvier, 1911 (Pycnogonida: Pycnogonidae) in the state of Ceará, northeastern Brazil". Check List. 13 (2): 2099. doi:10.15560/13.2.2099. ISSN 1809-127X.
Hedgpeth, Joel W. (1947). "On the evolutionary significance of the Pycnogonida". Smithsonian Miscellaneous Collections. 106 (18): 1–53. hdl:10088/22801 – via Smithsonian Research Online.
Soler-Membrives, Anna; Munilla, Tomás; Arango, Claudia P.; Griffiths, Huw (2014). "Southern Ocean biogeographic patterns in Pycnogonida" (PDF). Biogeographic Atlas of the Southern Ocean. Cambridge: Scientific Committee on Antarctic Research. ch. 5.14: 138–141. ISBN 978-0-948277-28-3.
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