Catalogue of the Smaller Arachnid Orders of the World: Amblypygi, Uropygi, Schizomida,
Palpigradi, Ricinulei and Solifugae.
Palpigradi, Schizomida, Solifugae y Thelyphonida (Chelicerata: Arachnida).
Crustacea dominate as predators (Cheng 1976), while a range of centipedes (Class Chilopoda), symphylids (Class Symphyla), pauropods (Class Pauropoda), millipedes (Class Diplopoda), scorpions (Order Scorpiones), microwhip scorpions (Order
Palpigradi), pseudoscorpions (Order Pseudoscorpiones), mites and ticks (Order Acari) and spiders (Order Araneae) have also been recorded as living in the intertidal region worldwide (Roth & Brown 1976).
Entre los 129 capitulos que versan sobre la sistematica de Arthropoda, tres se refieren a taxones afines al grupo de artropodos: "Pentastomida", "Onychophora" y "Tardigrada"; en tanto que 126 resenan los taxones caracteristicos de Arthropoda, asi los grupos de Chelicerata se incluyen en 14 capitulos relativos a "Xiphosura", "Pycnogonida", "
Palpigradi", "Schizomida", "Uropygi", "Amblypygi", "Solifugae", "Ricinulei", "Araneae" "Scorpiones", "Pseudoscorpionida", "Opiliones", "Acari" y "Oribatei (Acari)"; y en cuatro capitulos de Myriapoda se discuten "Symphyla", "Pauropoda", "Geophilomorpha" y "Diplopoda".
Solifugae,
Palpigradi. In Klassen und Ordnungen des Tierreichs.
Palpigradi.--A single, ?Pliocene, fossil palpigrade has been described from the Onyx Marble of Arizona, USA (Rowland & Sissom 1980).
Exceptions are, besides Opiliones (see below), Pseudoscorpiones (Weygoldt 1969), and anactinotrichid mites (Anactinotrichida = Parasitiformes s.l.) (Alberti 2006; Dunlop & Alberti 2007), which have no median eyes, and the eyeless
Palpigradi. The extant Ricinulei are usually considered to lack eyes although they bear more or less distinct light spots on the cuticle that may be associated with light reception.
Three arachnid orders, Amblypygi, Uropygi, and
Palpigradi share a narrow pedicel with Araneae, but the pro/ opisthosoma connection in spiders is especially flexible, probably to promote mobility of the spinnerets.
Two species of
Palpigradi have been previously reported from Morocco (Harvey 2003).
AF005445 Uropygi Mastigoproctus giganteus AF005446 (Lucas 1835) Schizomida Stenochrus portoricensis AF005444 Chamberlin 1922 Ricinulei Pseudocellus pearsei U91489 (Chamberlin & Ivie 1938)
Palpigradi Eukoenenia sp.
Parte 1: Ricinulei, Amblypygi, Solfugae,
Palpigradi, Schizomida, Uropygi.