Pachylobos Piza, 1940

Carvalho, Rafael N. & Kury, Adriano B., 2025, Further draining of Discocyrtus to expand Neopachylinae (Opiliones, Gonyleptidae): absorption of taxa and establishment of new genera and species, Zoological Journal of the Linnean Society (zlae 023) 203 (1), pp. 1-65 : 55-56

Pachylobos Piza, 1940

• Pachylobos Piza 1940a: 55 [junior subjective synonym of Discocyrtus Holmberg, 1878 by B. Soares (1944c: p. 267); synonymy rejected by Carvalho and Kury (2020, p. 88)].

Pachylobos — Carvalho and Kury 2020: 88.

• Discocyrtulosoma Piza 1943: 56 [junior subjective synonym of Discocyrtus Holmberg, 1878 by B. Soares (1944e: p. 223); transferred to synonym list of Pachylobos Piza, 1940 by Carvalho and Kury (2020, p. 88)].

Type species: Pachylobos areolatus Piza, 1940 , by original designation.

Diagnosis: See the original diagnosis in Carvalho and Kury (2020: 88). An updated version, following the results obtained here, as follows: Pachylobos can be distinguished from the other genera of Neopachylinae due to: (1) Ventral process of the glans sigmoid ( Carvalho and Kury 2020: fig. 15D); (2) Outline of the male’s DS type lambda sensu Kury and Medrano (2016) ( Figs 35A , 36B ); (3) Mesotergum with an areolate pattern of stains forming circles around of the tubercles ( Carvalho and Kury 2020: figs 13A, 35A, 36B); (4) Fe IV retrolateral face with a spine comb growing distally in size on the proximal third ( Figs 36F, 36H ); (5) Fe IV retrolateral face with a pair of intervaled spines (with almost the same size) on the central third ( Fig. 36F, H ); (6) Tr III retrolateral face of the females with the distal portion unarmed ( Fig. 38B ).

Included species: Pachylobos iratiensis , Pachylobos littoralis ( Mello-Leitão, 1932) (type species), and Pachylobos longicornis ( Mello-Leitão, 1922) .

Distribution: BRAZIL: states of Paraná and São Paulo ( Fig. 34 ).

Figures

Figure 34. South and southeastern Brazil, showing the distribution of Pachylobos Piza, 1940. Shaded areas in the background are Morrone’s regionalization of the Neotropics (‘provinces’; Morrone et al. 2022): Atlantic province (in dark green), Araucaria Forest province (in light green) and Paraná Forest province (in medium green).

Figure 35. Pachylobos iratiensis, ♂ holotype (MNRJ 363). A, habitus, dorsal view. B, same, lateral view.C, same, ventral view. ♀ paratype (same voucher).D, habitus, dorsal view. E, same, lateral view. F, same, ventral view.Scale bars = 5 mm.

Figure 36. Pachylobos iratiensis, ♂ holotype (MNRJ 363). A, ocularium,frontal view. B, habitus, dorsal view. C, armature of scutal area III, posterior view. D, habitus, lateral view.E, right trochanter–femur III, dorsal view.F, right trochanter–patella IV, dorsal view. G, same, prolateral view. H, right trochanter–tibia IV, ventral view.I, same, retrolateral view. J, right metatarsus–tarsus IV, retrolateral view. Scale bars: 1 mm (A, C, E), 3 mm (B, D, F–J).

Figure 38. Pachylobos iratiensis, ♀ paratype (MNRJ 363). A, ocularium, frontal view.B, habitus, dorsal view. C, right trochanter–femur IV, dorsal view. Scale bars: 1 mm (A), 3 mm (B–C).