Editing Amblypygi (section)

==Description==
[[File:AmblypygiDorsal.jpg|thumb|left|Detail of pedipalps]]
[[File:Phrynichus phipsoni – Pocock, 1900.png|thumb|right|Parts of an amblypygid, from Pocock (1900)<ref>{{cite book|author=R. I. Pocok|year=1900|title=Fauna of British India. Arachnida|url=http://www.ub.ntnu.no/scorpion-files/pocock_fauna_india.php|author-link=Reginald Innes Pocock}}</ref>]]

===Body-plan===
Being arachnids, Amblypygi possess two body-segments; the [[prosoma]] and the [[opisthosoma]] (often referred to as the [[cephalothorax]] and abdomen), four pairs of legs, pedipalps, and [[chelicerae]]. Their bodies are broad and highly flattened, with a solid prosoma and a segmented opisthosoma.<ref name=":1" />

Amblypygids range from {{convert|5|to|16|cm|sp=us}} in legspan.<ref name="Chapin">{{cite journal |last1=Chapin |first1=KJ |last2=Hebets |first2=EA |year=2016 |title=Behavioral ecology of amblypygids |url=http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1056&context=bioscihebets |journal=Journal of Arachnology |volume=44 |issue=1 |pages=1–14 |doi=10.1636/V15-62.1 |s2cid=29923727|url-access=subscription }}</ref><ref>{{Cite book |last1=Weygoldt |first1=Peter |title=Whip Spiders (Chelicerata: Amblypygi): Their Biology, Morphology and Systematics |publisher=Apollo Books |year=2000 |isbn=8788757463}}</ref> Most species have eight eyes; a pair of median eyes at the front of the [[carapace]] above the chelicerae and 2 smaller clusters of three eyes each further back on each side.

The first pair of legs act as sensory organs and are not used for walking. The sensory legs are very thin and elongated, have numerous sensory receptors, and can extend several times the length of the body.<ref name="Chapin" /><ref name=":1" />

====Pedipalps====
Amblypygids have [[raptorial]] [[pedipalp]]s modified for grabbing and retaining prey, much like the forelegs of [[mantis|mantiss]]es.<ref name="IZ">{{cite book |author=Robert D. Barnes |year=1982 |title= Invertebrate Zoology |publisher=[[Holt-Saunders International]] |location= Philadelphia, PA |pages= 617–619|isbn= 0-03-056747-5}}</ref> The pedipalps are generally covered in spines, used for impaling and capturing prey. They are kept folded in front of the prosoma when not in use.<ref name=":1" /> Recent work suggests that the pedipalps display sexual dimorphism in their size and shape.<ref name="McLeanGarwood2019">{{cite journal|last1=McLean|first1=C.J.|last2=Garwood|first2=R.J.|last3=Brassey|first3=C.A.|title=Sexual dimorphism in the size and shape of the raptorial pedipalps of Giant Whip Spiders (Arachnida: Amblypygi)|journal=Journal of Zoology|volume=310|issue=1|year=2019|pages=45–54|issn=0952-8369|doi=10.1111/jzo.12726|doi-access=free}}</ref>

Pedipalp anatomy varies strongly with species, with configurations often conforming to a particular style of prey capture. The pedipalps of some genera such as Euphrynicus are extremely long, and free of spines until near the extreme [[Anatomical terms of location|distal]] end of the appendage.<ref name=":1" />

====Exoskeleton====
Whip-spiders are covered with a layer of a solidified secretion that forms a [[Ultrahydrophobicity|super-hydrophobic]] coating.<ref>[https://zoologicalletters.biomedcentral.com/articles/10.1186/s40851-016-0059-y Whip spiders (Amblypygi) become water-repellent by a colloidal secretion that self-assembles into hierarchical microstructures]</ref> Studies on the [[Phrynus marginemaculatus|spotted tailless whip-scorpion]] also show their exoskeleton is enriched with several trace-elements, including calcium, magnesium, manganese, potassium, sodium, and zinc, which tends to accumulate as the individual gets older. The same trace-elements are also present in the exoskeleton of the other members of [[Tetrapulmonata]].<ref>[https://bioone.org/journals/the-journal-of-arachnology/volume-49/issue-2/JoA-S-20-048/Elemental-enrichment-of-the-exoskeleton-of-the-whip-spider-Phrynus/10.1636/JoA-S-20-048.short Elemental enrichment of the exoskeleton of the whip spider Phrynus marginemaculatus (Arachnida: Amblypygi)]</ref>