Parastacus pilicarpus Huber, Ribeiro & Araujo, 2018

Ribeiro, Felipe Bezerra & Araujo, Paula Beatriz, 2024, Taxonomic review of the genus Parastacus Huxley, 1879 (Decapoda: Astacidea: Parastacidae) with description of five new species, Zootaxa 5455 (1), pp. 1-84 : 48

Parastacus pilicarpus Huber, Ribeiro & Araujo, 2018

( Fig. 28 )

Parastacus pilicarpus Huber et al. 2018: 10 , Figs. Figs. 4–8 .—­ Rogers et al. 2020: 877 (key), fig. 23.64.—­ Huber et al. 2022: 276 (key).—­ De los Ríos-Escalante et al. 2022: 1130 (appendix), fig. 1l. —­ Huber et al. 2024: 14 (key).

Type locality. Morro Grande , state of Santa Catarina, Brazil ( Huber et al. 2018) .

Diagnosis and Description. Huber et al. (2018).

Distribution. Brazil: state of Santa Catarina ( Huber et al. 2018).

Color of live specimens. Huber et al. (2018) ( Fig. 28 ).

Habitat. Streams ( Huber et al. 2018). This species builds burrows with small chimneys in the river margins. Burrows of P. pilicarpus can be identified as type 1a,b according to Horwitz and Richardson’s (1986) classification and the species can be considered a tertiary burrower based on Hobbs’ (1942) classification ( Ribeiro et al. 2020).

Figures

FIGURE 4. Parastacus pugnax (Poeppig, 1835): A—­ habitus, dorsal view (UFRGS 726); B—­ cephalon, dorsal view (UFRGS 726); C—­ cephalon, lateral view (UFRGS 726); D—­ female pleonal somites, dorsal view (UFRGS 2407); E—­ first to third male pleonal pleura (UFRGS 726); F—­ first to third female pleonal pleura (UFRGS 2407); G—­ tailfan (UFRGS 726). Scale bars: A, E—­ 10 mm; B, C, D, F, G—­ 5 mm.

FIGURE 5. Parastacus pugnax (Poeppig, 1835): A—­ epistome (UFRGS 2407); B—­ thoracic sternites and gonopores (UFRGS 726); C—­ thoracomere 8, caudal view (UFRGS 726); D—­ antennal scale, lateral view (UFRGS 726); E—­ mandible (UFRGS 726); F—­ third maxilliped, ventral view (UFRGS 726); G—­ third maxilliped, dorsal view (UFRGS 726); H—­ first pereiopod, lateral view (UFRGS 726); I—­ first pereiopod, dorsal view (UFRGS 726); J—­ second pereiopod, lateral view (UFRGS 726). Scale bars: A, C, D, H, I—­ 5 mm; B—­ 10 mm; F, G, J—­ 3.33 mm.

FIGURE 6. Parastacus pilimanus (von Martens, 1869): A—­ habitus, dorsal view (UFRGS 277); B—­ cephalon, dorsal view (UFRGS 277); C—­ cephalon, lateral view (UFRGS 277); D—­ female pleonal somites, dorsal view (UFRGS 277); E—­ first to third male pleonal pleura (UFRGS 277); F—­ first to third female pleonal pleura (UFRGS 277); G—­ tailfan (UFRGS 277). Scale bars: A, C, D, E—­ 1 cm; B, F, G—­ 5 mm.

FIGURE 7. Parastacus pilimanus (von Martens, 1869): A—­ epistome (UFRGS 277); B—­ thoracic sternites and gonopores (UFRGS 277); C—­ thoracomere 8, caudal view (UFRGS 277); D—­ antennal scale, lateral view (UFRGS 277); E—­ mandible (UFRGS 277); F—­ third maxilliped, ventral view (UFRGS 277); G—­ third maxilliped, dorsal view (paratype 4); H—­ first pereiopod, lateral view (UFRGS 277); I—­ first pereiopod, dorsal view (UFRGS 277); J—­ second pereiopod, lateral view (UFRGS 277). Scale bars: A, C, F, G, I, J—­ 5 mm; B, H—­ 1 cm; D, E—­ 2.5 mm.

FIGURE 8. Parastacus pilimanus (von Martens, 1869), living specimen and habitat:A—­ living specimen; B—­ habitat, wetland in the municipality of Uruguaiana, state of Rio Grande do Sul, Brazil; C—­ burrow opening with chimney. White arrow indicates burrow opening. Scale bar: A—­ 10 mm.

FIGURE 28. Parastacus pilicarpus Huber, Ribeiro & Araujo, 2018: living specimen in aquarium. Photo by Caio Feltrin.