Parastacus laevigatus Buckup and Rossi, 1980: 677 Hobbs 1989: 79 Rogers et al . 2020: 879 Huber et al . 2022: 276 Ríos-Escalante et al . 2022: 1129 Huber et al . 2024: 14 Taxonomic review of the genus Parastacus Huxley, 1879 (Decapoda: Astacidea: Parastacidae) with description of five new species Ribeiro, Felipe Bezerra Araujo, Paula Beatriz Zootaxa 2024 2024-05-23 5455 1 1 84 7W94M Buckup & Rossi, 1980 Buckup & Rossi 1980 [151,699,942,969] Malacostraca Parastacidae Parastacus Animalia Decapoda 37 38 Arthropoda species laevigatus  ( Fig. 21–22)      Parastacus laevigatus Buckup and Rossi, 1980: 677, figs. 18, 21.—­  Hobbs 1989: 79, fig. 369; 1991: 801.—­ Boos et al.2012: 1030.—­  Rogers et al. 2020: 879(key), fig. 23.66B.—­  Huber et al. 2022: 276(key).—­ De los  Ríos-Escalante et al. 2022: 1129(appendix), fig. 1i.—­  Huber et al. 2024: 14(key).     Typelocality. Joinville, Santa Catarina, Brazil( Buckup & Rossi 1980).  Type Material re-examined.   Holotype.male, Brazil, Santa Catarina, Joinville, Estrada da Cidra, Chacara dos Ipês.  05/VIII/1961, coll. Rosenberg( MNRJ 31135).   Paratypes. one femaleand five juveniles, same data as holotype ( MNRJ 31136);  one female, Cubatão Grande, São Francisco do Sul, Santa Catarina,  25/IX/1959, coll. H. Stick( MNRJ 31137);  one female, Brazil( UFRGS 2039).  Material examined.  Brazil: Santa Catarina—­ one ovigerous female (with three eggs),  São Francisco do Sul, E. Gounelle, 1914 (MNHN-IU 2013-14858).   Diagnosis and description. Buckup & Rossi (1980).   Remarks.The typematerial was apparently lost as pointed by Ludwig Buckup, but it was found in the UFRGS collection during the review of specimens. Apparently, this material was never deposited in the MNRJ collection by the original authors. It was send to MNRJ during the present study and received new catalog numbers. This species was never found again in nature since 1962 and it is probably extinct in nature (F. B. Ribeiro personal observation). Additional morphological characters not mentioned in previous descriptions include: eyes small ( Fig. 21A, B, C); front narrow ( Fig. 21A, B); epistome anterolateral section with a blunt conical projection ( Fig. 22A); antennal scale lateral margin straight ( Fig. 22D); antennule internal ventral border of basal article with one sharp spine ( Fig. 22A); mandible with cephalic molar process molariform and caudal molar process unicuspidate, incisor lobe with eight teeth; the second tooth from the anterior are the largest ( Fig. 22E); SLP4 close to each other, medial keel present and not inflated; SLP5 smallest separeted to each other, median keel present and not inflated; SLP6 larger than SLP4 and SLP5 with slightly concave dorsal surface, medial keel present and inflated; SLP7 largest and with slightly concave surface, median keel present and slightly inflated; SLP8 smaller than SLP 7, median keel absent, vertical arms of paired sternopleural bridges close to each, bullar lobes not visible ( Fig. 22B, C); male cuticle partition present. This species is morphologically similar to  P. pilimanus,  P. fluviatilisand  P. pilicarpusin having the chelipeds laterally flattened and with the cutting edge of the finger covered by tufts of long setae, but it can be distinguished from those species by the post orbital carinae being obsolete and the presence of the carpal spine.   Distribution. Brazil: state of Santa Catarina( Buckup and Rossi, 1980).  Color of live specimens.Data not available.  Habitat and Ecology.Data not available [151,950,1173,1199] Brazil Joinville 37 38 1 Santa Catarina holotype 1961-08-05 MNRJ Chacara dos Ipes. & Rosenberg Brazil Estrada da Cidra Joinville 37 38 MNRJ 31135 1 Santa Catarina holotype 1961-08-05 MNRJ Chacara dos Ipes. & Rosenberg Brazil Estrada da Cidra Joinville 37 38 MNRJ 31136 6 1 5 Santa Catarina paratype 1959-09-25 MNRJ H. Stick Brazil Sao Francisco do Sul Cubatao Grande 37 38 MNRJ 31137 1 1 Santa Catarina paratype [335,724,1317,1344] UFRGS Brazil Brazil 37 38 UFRGS 2039 1 1 paratype Sao Francisco do Sul, E Brazil Sao Francisco do Sul 37 38 3 3 Santa Catarina