| Colossendeis proboscidea | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Pycnogonida |
| Order: | Pantopoda |
| Family: | Colossendeidae |
| Genus: | Colossendeis |
| Species: | C. proboscidea |
| Binomial name | |
| Colossendeis proboscidea Sabine, 1824 | |
| Synonyms [1] | |
| |
The Marine Sea Spider (Colossendeis proboscidea) is a species of sea spider native to the Arctic and northeast Atlantic. [2] [3] [4]
The chelicerae are the mouthparts of the subphylum Chelicerata, an arthropod group that includes arachnids, horseshoe crabs, and sea spiders. Commonly referred to as "jaws", chelicerae may be shaped as either articulated fangs, or similarly to pincers. Some chelicerae, such as those found on nearly all spiders, are hollow and contain venom glands, and are used to inject venom into prey or a perceived threat. In Pisaurina mira, also known as the nursery web spider, the chelicerae are utilized to snatch the prey once it becomes within reach, facilitating the "sit-and-wait ambush predator" behavior. Both pseudoscorpions and harvestmen have structures on their chelicerae that are used for grooming.
Sea spiders are marine arthropods of the order Pantopoda, belonging to the class Pycnogonida, hence they are also called pycnogonids. They are cosmopolitan, found in oceans around the world. The over 1,300 known species have legs ranging from 1 mm (0.04 in) to over 70 cm (2.3 ft). Most are toward the smaller end of this range in relatively shallow depths; however, they can grow to be quite large in Antarctic and deep waters.
Colossendeidae is a family of sea spider. Like most sea spiders, species in this family have four pairs of legs, except for three species with five pairs and one with six pairs.
Nymphonidae is a family of sea spiders which has representatives in all the oceans. This family contains some 250 species, most of which are found in the genus Nymphon. Nymphonid bodies are between 1 and 15 mm long, the extent between the points of the legs reaching 150 mm. Most species are predators of hydroids. Like most sea spiders, species in this family have four pairs of legs, except for Pentanymphon antarcticum, which has five pairs, and Sexanymphon mirabilis, which has six pairs.
Phoxichilidiidae is a family of sea spiders. About 150 species are described, almost all in the genus AnoplodactylusWilson, 1878.
Austrodecidae is a family of sea spiders. Austrodecidaes tend to be small measuring only 1–2 mm. This family is polyphyletic and will be split into two groups.
Thomas Henry Tizard was an English oceanographer, hydrographic surveyor, and navigator.
In zoology, deep-sea gigantism or abyssal gigantism is the tendency for species of invertebrates and other deep-sea dwelling animals to be larger than their shallower-water relatives across a large taxonomic range. Proposed explanations for this type of gigantism include colder temperature, food scarcity, reduced predation pressure and increased dissolved oxygen concentrations in the deep sea. The inaccessibility of abyssal habitats has hindered the study of this topic.
Liponema brevicorne, commonly known as pom-pom anemone or tentacle shedding anemone, is a species of sea anemone in the family Actiniidae. It is a deep water species and has been relatively little observed. It often remains unattached to a substrate and can roll across the ocean floor propelled by water currents.
Nymphon is a genus of sea spiders in the family Nymphonidae. The species of sea spiders within the genus Nymphon are all benthic organisms and are found in abyssal and bathyal areas of the ocean. This is a fully marine group and can be found at various depths ranging from the littoral zones to the deep sea. They are found in most major oceans across the globe with a strong distribution around polar regions: Arctic and Antarctic waters. Out of the sea spider genus, Nymphon is the most rich, with a majority of the species within the genis being found in the Southern Ocean region. This genus may also contain bioluminescent species.
Pycnogonidae is a family of sea spiders.
Pycnogonum is a genus of sea spiders in the family Pycnogonidae. It is the type genus of the family.
Nymphon gracile is a species of sea spider first described by William Elford Leach in 1863. The species highly resembles other members of the genus Nymphon, and species identification from morphological traits alone is, therefore, a complex task.
Nymphon leptocheles is a species of sea spider first described by Georg Ossian Sars in 1888. The species greatly resembles other members of the genus Nymphon, and species identification from morphological traits alone is therefore a complex task.
Colossendeis is a genus of sea spider belonging to the family Colossendeidae.
Palaeoisopus is a monotypic genus of fossil pycnogonid, known only by one species, Palaeoisopus problematicus, discovered from the Lower Devonian Hunsrück Slate of Germany. It have several characters unusual for a pycnogonid, such as swimming legs with alternating size, medially-arranged eyes, and most significantly, a long, segmented abdomen, which were highly reduced in modern counterparts.
Colossendeis belekurovi is a species of sea spider belonging to the family Colossendeidae. The species was first described by Pushkin in 1993.
Colossendeis colossea is a species of sea spider in the family Colossendeidae. The species was first described by Wilson in 1881.
Colossendeis acuta is a sea spider that occurs in deep-sea habitats in the Antarctic Pacific. The species shows sexual dimorphism and the eggs are brooded by the male.
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