Paguroidea Latreille 1802
Creators: name: Wicksten, Mary K.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda

description: Key to species of Paguroidea  1. Outer maxillipeds approximated at their bases; chelipeds equal or subequal in size...................... 2 (Diogenidae)  
– Outer maxillipeds widely separated at their bases; right cheliped larger than left.................................... 7  
 2. Pereopod 4 subchelate, no paired pleopods in either sex. Often buried in sand........................ Isocheles pilosus   
– Pereopod 4 simple, paired pleopods in both sexes. Living in sand or among rocks, usually not buried................... 3  
 3. Dorsal surface of palms of chelae coarsely granulated, and bearing fluffy clusters of short plumose setae.. Paguristes parvus   
– Dorsal surface of palms of chelae with large conical tubercles, each tipped with dark corneous spine; chelae bearing many long stiff simple setae...................................................................................... 4  
4. Rostrum about as long as lateral frontal projections of carapace; antennal flagellum with short, wide-set hairs on lower surface.................................................................................................... 5  
– Rostrum longer than lateral frontal projections of carapace; antennal flagellum with long, close-set hairs on lower surface.. 6  
 5. Chelae very broad, their dorsomesial margin strongly convex.................................... Paguristes bakeri   
 – Chelae relatively narrow, dorsomesial margin not strongly convex................................ Paguristes turgidus   
 6. Rostrum broad at base, reaching about to base of eyecales; propodus, dactyl pereopods 2, 3 with small, dark corneous spines on inner surface.......................................................................... Paguristes ulreyi   
 – Rostrum slender, narrow at base, apex reaching beyond base of eyecales; propodus, dactyl of pereopods 2, 3 unarmed on inner surface... Paguristes undescribed species   
7. Crista dentata of outer maxillipeds with 1 or more accessory teeth, first maxilliped exopod with flagellum, female with gonopore on coxa of both third pereopods. (Intertidal zone to continental slopes, common)...................... 8 (Paguridae)  
– Crista dentata of outer maxillipeds lacking accessory tooth, first maxilliped exopod without flagellum, female with gonopore on coxa of left third pereopod only. (Continental shelf to abyssal plains)........................... 38 (Parapaguridae)  
8. Telson with posterior margin entire, lacking lobes, median cleft................................................. 9  
– Telson divided into lobes posteriorly..................................................................... 10  
 9. Telson unarmed terminally, uropods asymmetrical.................................... Enallopaguropsis guatemoci   
 – Telson with terminal spines; uropods symmetrical....................................... Discorsopagurus schmitti   
10. Propodial rasp of pereopod 4 a single row................................................................. 11  
– Propodial rasp of pereopod 4 with multiple scale rows....................................................... 13  
 11. Abdomen straight; uropods symmetrical.................................................. Pylopagurus holmesi   
– Abdomen coiled; uropods asymmetrical................................................................... 12  
 12. Major chela discoid, dorsal surface of palm convex, bearing many low boss-like tubercles; dactyl with raised ridge on dorsal face; pereopod 4 with preungual process.............................................. Phimochirus californiensis   
 – Major chela subquadrate, dorsal surface of palm slightly concave, with raised margins, scattered slender tubercles; dactyl without facial ridge, but bearing proximal tubercle row on dorsal face; pereopod 4 lacking preungual process... Haigia diegensis   
 13. Abdomen straight, uropods symmetrical. Often inhabiting tubes or tubular shells................. Orthopagurus minimus   
– Abdomen coiled, uropods asymmetrical.................................................................. 14  
14. Male with short sexual tube on coxa of pereopod 5.......................................................... 15  
 – Male without sexual tube on coxa of pereopod 5 except Pagurus aleuticus male.................................. 18   
 15. Dactyls of pereopods with pronounced lateral sulcus..................................... Pagurus aleuticus female
description: Published as part of Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371 on page 172