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270:, suggests that scale bars for males is 5 mm (0.20 in), while for females its 2 mm (0.079 in). The size of the specimen was 46.3 to 52.2 mm (1.82 to 2.06 in) for males, while females were 35 mm (1.4 in).
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was introduced to
California, probably in the 19th century, and since then, no sightings of
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337:"Re–examination of Pacifastacus nigrescens (Decapoda: Astacidae)"
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Schuster, G.A.; Taylor, C.A. & Cordeiro, J. (2010).
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237:, where it was once common in the creeks surrounding
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321:10.2305/IUCN.UK.2010-3.RLTS.T15867A5247659.en
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266:The preserved specimen of male and female
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253:have been made; it is now believed to be
229:. It was originally described in 1857 by
616:Freshwater crustaceans of North America
303:The IUCN Red List of Threatened Species
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339:. Crustacean Research. pp. 75–83.
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641:Extinct animals of the United States
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631:Extinct invertebrates since 1500
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646:Taxa named by William Stimpson
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626:Crustaceans described in 1857
606:IUCN Red List extinct species
559:. You can help Knowledge by
621:Endemic fauna of California
221:, is an extinct species of
16:Extinct species of crayfish
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72:Scientific classification
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247:Pacifastacus leniusculus
361:Pacifastacus nigrescens
296:Pacifastacus nigrescens
214:Pacifastacus nigrescens
195:Pacifastacus nigrescens
25:Pacifastacus nigrescens
335:Tadashi Kawai (2012).
233:from the area around
314:: e.T15867A5247659.
636:Extinct crustaceans
260:Procambarus clarkii
42:Conservation status
174:P. nigrescens
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499:Open Tree of Life
353:Taxon identifiers
239:San Francisco Bay
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219:sooty crayfish
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561:expanding it
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160:Pacifastacus
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119:Malacostraca
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512:SeaLifeBase
486:NatureServe
424:iNaturalist
139:Pleocyemata
600:Categories
274:References
135:Suborder:
109:Arthropoda
611:Astacidae
227:Astacidae
167:Species:
149:Astacidae
95:Kingdom:
89:Eukaryota
553:crayfish
491:2.112853
442:10908010
376:Q2087241
370:Wikidata
223:crayfish
203:Stimpson
145:Family:
129:Decapoda
105:Phylum:
99:Animalia
85:Domain:
62:IUCN 3.1
504:2974329
416:2226996
403:1019396
255:extinct
205:, 1857)
192:†
171:†
155:Genus:
125:Order:
115:Class:
60: (
57:Extinct
530:885107
241:. The
217:, the
551:This
525:WoRMS
517:26031
475:NAS:
468:15867
455:97331
437:IRMNG
429:71070
390:7W7FS
557:stub
463:IUCN
450:ITIS
411:GBIF
312:IUCN
308:2010
478:198
398:EoL
385:CoL
316:doi
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282:^
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245:,
588:e
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574:v
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324:.
318::
298:"
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201:(
64:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
