Parastacus Huxley 1879
Authors/Creators
Description
Updated key to genus Parastacus.
The following key is modified from Huber et al. (2022), with the addition of Parastacus longidactylus sp. n.
1 Telson with lateral spines ................................................................................................................................... 2
1’ Telson without lateral spines, maxilliped III exopod flagellum surpassing ischium distal margin..... ....................................................................................................................... Parastacus nicoleti (Philippi, 1882)
2(1) Postorbital carina proximal edge ending in a strong spine; uropod protopod proximal lobe bearing a spine; areola delimited by carinae ................................................................................................................ 3
2’ Postorbital carina proximal edge not ending in spine; uropod protopod lobe lacking spine; areola not delimited by carinae ............................................................................................................................................ 4
3(2) Cheliped merus,carpus,and propodus medially with tufts of long setae; maxilliped III ischium ventral margin with longitudinal spine row ...................................................... Parastacus varicosus Faxon, 1898
3’ Cheliped merus, carpus, and propodus medially glabrous; maxilliped III ischium ventral margin with longitudinal tubercle row ............................................................................. Parastacus saffordi Faxon, 1898
4(2’) Telson distal margin rounded............................................................................................................................ 5
4’ Telson distal margin acute ................................... Parastacus buckupi Huber, Ribeiro and Araujo, 2018
5(4) Cheliped carpus distally glabrous .................................................................................................................... 6
5’ Cheliped carpus distally with tufts of long and simple setae ....................................................................... .................................................................................. Parastacus pilicarpus Huber, Ribeiro and Araujo, 2018
6(5) Epistome anteromedian lobe hexagonal or pentagonal .............................................................................. 7
6’ Epistome anteromedial lobe septagonal ......................................................................................................... 8
7(6) Cheliped dactyl and pollex cutting edges covered by long setal tufts...................................................... 9
7’ Cheliped dactyl and pollex cutting edges visible ........................................................................................10
8(6’) Dactylus long .................................................................................................... Parastacus longidactylus sp. n.
8’ Dactylus short ......................................................... Parastacus gomesae Huber, Araujo and Ribeiro, 2022
9(7) Postorbital carinae prominent ............................................... Parastacus pilimanus (von Martens, 1869)
9’ Postorbital carinae obsolete ............................................. Parastacus laevigatus Buckup and Rossi, 1980
10(7’) Chelipeds with globose palm .......................................................................................................................... 11
10’ Chelipeds with flattened palm ....................................................................................................................... 13
11(10) Cervical groove U-shaped .... Parastacus caeruleodactylus Ribeiro and Araujo in Ribeiro et al., 2016
11’ Cervical groove V-shaped ............................................................................................................................... 12
12(11’) Rostral carinae reaching postorbital carinae proximal edge ............. Parastacus defossus Faxon, 1898
12’ Rostral carinae surpassing postorbital carinae proximal edge ... Parastacus pugnax (Poeppig, 1835)
13(10’)Telson subrectangular ...................................................................................................................................... 14
13’ Telson subtriangular .......................... Parastacus fluviatilis Ribeiro and Buckup in Ribeiro et al., 2016
14(13) Cheliped palm dorsal surface with tubercles irregularly distributed .................................................... 15
14’ Cheliped palm dorsal surface with three well-defined tubercle rows ........................................................ ........................................................ Parastacus tuerkayi Ribeiro, Huber and Araujo in Ribeiro et al., 2017
15(14) Cheliped ventral surface bearing one row of squamose tubercles ......................................................... 17
15’ Cheliped ventral surface bearing two rows of squamose tubercles ....................................................... 16
16(15’)Postorbital carinae prominent in anterior and middle portions .................................................................. ........................................................................................ Parastacus guapo Huber, Araujo and Ribeiro, 2022
16’ Postorbital carinae weakly prominent................................................................................................................ ............................................................... Parastacus macanudo Huber, Rockhill, Araujo and Ribeiro, 2020
17(15) Cheliped palm medial margin tuberculate, cervical groove U-shaped ...................................................... ........................................................................................ Parastacus promatensis Fontoura and Conter, 2008
17’ Cheliped palm medial margin smooth; groove weakly V-shaped ............................................................... ...................................................................................................... Parastacus brasiliensis (von Martens, 1869)
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Huxley
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Order
- Decapoda
- Family
- Parastacidae
- Genus
- Parastacus
- Taxon rank
- genus
- Taxonomic concept label
- Parastacus Huxley, 1879 sec. Huber, Araujo & Ribeiro, 2024
References
- Huber AF; Araujo PB and Ribeiro FB 2022. The hole is deeper: description of two new species within the Parastacus brasiliensis (von Martens, 1869) species complex with an integrative taxonomy approach. Zootaxa, 5168 (3): 251 - 284. doi. org / 10.11646 / zootaxa. 5168.3.1.
- Philippi RA 1882. Zoologia chilena. Sobre los Astacus. Anales de la Universidad de Chile, 61: 624 - 628. https: // doi. org / 10.5354 / 0717 - 8883.2012.21621
- Faxon W 1898. Observations on the Astacidae in the United States National Museum and in the Museum of Comparative Zoology, with descriptions of new species. Proceedings of the United States National Museum, 20 (1136): 642 - 694. https: // doi. org / 10.5479 / si. 00963801.20 - 1136.643.
- Huber AF; Ribeiro FB and Araujo PB 2018. New endemic species of freshwater crayfish Parastacus Huxley, 1879 (Crustacea: Decapoda: Parastacidae) from the Atlantic forest in southern Brazil. Nauplius, 26: e 2018015. https: // doi. org / 10.1590 / 2358 - 2936 e 2018015
- Buckup L and Rossi A 1980. O genero Parastacus no Brasil (Crustacea, Decapoda, Parastacidade). Revista Brasileira de Biologia, 40: 663 - 681.
- Ribeiro FB; Buckup L; Gomes KM and Araujo PB 2016. Two new species of South American freshwater crayfish genus Parastacus Huxley, 1879 (Crustacea: Decapoda: Parastacidae). Zootaxa, 4158 (3): 301 - 324. https: // doi. org / 10.11646 / zootaxa. 5158.3.1
- Ribeiro FB; Huber AF; Schubart D and Araujo PB 2017. A new species of Parastacus Huxley, 1879 (Crustacea, Decapoda, Parastacidae) from a swamp forest in southern Brazil. Nauplius, 25: e 2017008. https: // doi. org / 10.1590 / 2358 - 2936 e 2017008
- Huber AF; Rockhill ER; Araujo PB and Ribeiro FB 2020. A new species of burrowing crayfish in genus Parastacus Huxley, 1879 (Decapoda, Parastacidae) from the Sinos River Basin, Southern Brazil. Zoological Studies, 59 (47). https: // doi. org / 10.6620 / ZS. 2020.59 - 47
- Fontoura NF and Conter MR 2008. Description of a new subspecies of the crayfish Parastacus brasiliensis (Von Martens, 1869) from Sao Francisco de Paula, RS, Brazil (Decapoda, Parastacidae). Zootaxa, 1849 (1): 28 - 34. https: // doi. org / 10.11646 / zootaxa. 1849.1.2.