Rostrum |
|
|
|
|
|
|
|
|
|
Shape |
Triangular or spatulated |
Triangular |
Triangular |
Triangular |
Triangular |
Triangular |
Subtriangular |
|
Apex |
Rounded, ending in an upward spine |
Rounded, ending in an upward spine |
Rounded and smooth* |
Rounded, ending in an upward spine |
Rounded, ending in a straight blunt spine |
Rounded, ending in a tiny straight blunt spine* |
Acute, ending in a short and depressed spine. |
|
Dorsal Surface |
Concave |
Straight |
Straight with a slightly concave in the anterior portion |
Straight |
Straight |
Straight |
Flat |
|
Eyes |
Small |
Small |
Small* |
Small |
Large |
Small |
Small |
|
Rostral carina |
Surpassing the rostral basis |
Surpassing the rostral basis |
Surpassing the rostral basis |
Surpassing the rostral basis |
Surpassing rostral basis and extending almost to the middle of postorbital carinae |
Surpassing the rostral basis |
Surpassing the rostral basis |
Suborbital angle |
|
=90° |
=90° |
>90° * |
>90°* |
=90° |
>90° |
=90° |
Postorbital carina |
|
Weakly prominent |
Weakly prominent |
Prominent in anterior and middle portions |
Prominent in anterior and middle portions |
Prominent |
Weakly prominent |
Prominent |
Cervical groove |
|
Weakly V-shaped |
Weakly V-shaped |
Weakly V-shaped |
Weakly V-shaped |
Weakly V-shaped |
Weakly V-shaped |
U-shaped |
Epistome |
|
|
|
|
|
|
|
|
|
Anteromedian lobe |
Pentagonal |
Pentagonal |
Septagonal |
Pentagonal |
Septagonal |
Pentagonal |
Pentagonal |
Mandible |
|
|
|
|
|
|
|
|
|
Incisor process |
Nine teeth (the third tooth from the anterior margin is the largest) |
Ten teeth (the fourth tooth from the anterior margin is the largest) |
Seven teeth (the second tooth from the anterior margin is the largest) |
Nine teeth (the third tooth from the anterior margin is the largest)* |
Ten teeth (the third tooth from the anterior margin is the largest) |
Nine teeth (the second tooth from the anterior margin is the largest) |
Nine teeth (the third tooth from the anterior margin is the largest) |
|
Caudal molar process |
Bicuspidate |
Unicuspidate |
Bicuspidate |
Bicuspidate |
Bicuspidate |
Bicuspidate |
Bicuspidate |
Chelipeds |
|
|
|
|
|
|
|
|
|
Carpal spine |
Absent |
Absent |
Absent |
Present |
Absent |
Present |
Absent |
|
Size and shape |
Large and flattened |
Large and globose |
Large and flattened |
Large and flattened |
Large and flattened |
Large and flattened |
Large and flattened |
|
Palm dorsal surface |
2-3 rows of verrucose tubercles irregularly distributed |
2 rows of verrucose tubercles irregularly distributed |
3-4 rows of verrucose tubercles irregularly distributed |
2-3 rows of verrucose tubercles irregularly distributed |
Verrucose tubercles irregularly distributed |
Single row of verrucose tubercles irregularly distributed |
3-4 rows of verrucose tubercles irregularly distributed |
|
Palm internal surface |
Smooth |
Smooth |
Few small tubercles |
Sparse tubercles more concentrated in the low portion and close to the insertion of dactylus |
Smooth |
Smooth |
Tubercles in medial portion |
|
Dactylus Size |
Medium |
Medium |
Short |
Medium |
Long |
Medium |
Medium |
Areola |
|
Wide |
Narrow |
Narrow |
Narrow* |
Narrow |
Narrow |
Narrow |
Pleon |
|
|
|
|
|
|
|
|
|
Shape |
Long and wide |
Short and wide |
Short and wide* |
Short and wide* |
Short and wide |
Long and wide |
Long and wide |
Telson |
|
|
|
|
|
|
|
|
|
Shape |
Subrectangular |
Subrectangular |
Subrectangular |
Subrectangular |
Subrectangular |
Subrectangular |
Subrectangular |
|
Lateral spines |
Large and sharp |
Small and sharp |
Small and sharp |
Large and sharp |
Small and blunt |
Large and sharp |
Large and sharp |
|
|
|
|
|
|
|
|
|
References |
|
Buckup and Rossi (1980Buckup L and Rossi A 1980. O gênero Parastacus no Brasil (Crustacea, Decapoda, Parastacidade). Revista Brasileira de Biologia, 40: 663-681.); Miranda et al. (2018Miranda I; Gomes KM; Ribeiro FB ; Araujo PB ; Souty-Grosset C and Schubart CD 2018. Molecular systematics reveals multiple lineages and cryptic speciation in the freshwater crayfish Parastacus brasiliensis (von Martens, 1869) (Crustacea: Decapoda: Parastacidae). Invertebrates Systematics, 32: 1265-1281. https://doi.org/10.1071/IS18012 https://doi.org/10.1071/IS18012...
); Ribeiro et al. (2020 Ribeiro FB ; Gomes KM ; Huber AF and Loureiro TG 2020. Diversity and Conservation Strategies of Freshwater Crayfish in South America: An Update. p. 1-42. In: Ribeiro FB (Ed), Crayfish: Evolution, Habitat and Conservation Strategies. New York, Nova Science Publishers, ). |
Huber et al. (2018Huber 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: e2018015. https://doi.org/10.1590/2358-2936e2018015 https://doi.org/10.1590/2358-2936e201801...
); Ribeiro et al. (2020 Ribeiro FB ; Gomes KM ; Huber AF and Loureiro TG 2020. Diversity and Conservation Strategies of Freshwater Crayfish in South America: An Update. p. 1-42. In: Ribeiro FB (Ed), Crayfish: Evolution, Habitat and Conservation Strategies. New York, Nova Science Publishers, ). |
Huber et al. (2022 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. https://doi.org/10.11646/zootaxa.5168.3.1. https://doi.org/10.11646/zootaxa.5168.3....
). |
Huber et al. (2022 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. https://doi.org/10.11646/zootaxa.5168.3.1. https://doi.org/10.11646/zootaxa.5168.3....
). |
Present paper. |
Huber et al. (2020 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 https://doi.org/10.6620/ZS.2020.59-47...
); Ribeiro et al. (2020 Ribeiro FB ; Gomes KM ; Huber AF and Loureiro TG 2020. Diversity and Conservation Strategies of Freshwater Crayfish in South America: An Update. p. 1-42. In: Ribeiro FB (Ed), Crayfish: Evolution, Habitat and Conservation Strategies. New York, Nova Science Publishers, ). |
Fontoura and Conter (2008Fontoura NF and Conter MR 2008. Description of a new subspecies of the crayfish Parastacus brasiliensis (Von Martens, 1869) from São Francisco de Paula, RS, Brazil (Decapoda, Parastacidae). Zootaxa, 1849(1): 28-34. https://doi.org/10.11646/zootaxa.1849.1.2. https://doi.org/10.11646/zootaxa.1849.1....
); Miranda et al. (2018Miranda I; Gomes KM; Ribeiro FB ; Araujo PB ; Souty-Grosset C and Schubart CD 2018. Molecular systematics reveals multiple lineages and cryptic speciation in the freshwater crayfish Parastacus brasiliensis (von Martens, 1869) (Crustacea: Decapoda: Parastacidae). Invertebrates Systematics, 32: 1265-1281. https://doi.org/10.1071/IS18012 https://doi.org/10.1071/IS18012...
); Ribeiro et al. (2020 Ribeiro FB ; Gomes KM ; Huber AF and Loureiro TG 2020. Diversity and Conservation Strategies of Freshwater Crayfish in South America: An Update. p. 1-42. In: Ribeiro FB (Ed), Crayfish: Evolution, Habitat and Conservation Strategies. New York, Nova Science Publishers, ). |