Iamarinus, Carvalho & Kury, 2025

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 : 41

Iamarinus gen. nov.

ZooBank LSID: urn:lsid:zoobank.org:act:7E36E340-D653-461C-9417-7410178B4A04 .

Type species: Iamarinus pontesi gen. et sp. nov.

Etymology: Iamarinus is named in honor of biologist Atila Iamarino, who actively engaged in science communication, delivering significant contributions through his work, which have been immensely valuable to the Brazilian population in recent years. Gender masculine.

Diagnosis: Iamarinus can be distinguished from the other genera of Neopachylinae due to (1) DS posterior margin full extension with a transversal row of conspicuous tubercles (Figs 117, 126); (2) Tr IV long, with twice or more the Tr III longitudinal size (Figs 116, 120–122, 126, 131–134); (3) Fe IV retrolateral face with spines interpolated (by unarmed spaces) on the proximal third (Figs 131, 133–134); (4) Fe IV retrolateral face with a pair of outstanding spines (distalmost largest) on the central third (Figs 115–116, 131, 133–134); (5) VP basal half 1/3 wider than the distal half (Figs 136, 138); (6) Females’ Fe IV dorsal face with two prominent spines on the distal third (Figs 113, 141).

Included species: Iamarinus fenax (Kury, Pinto-da-Rocha & Carvalho in Kury, Pinto-da-Rocha, Gruber & Carvalho, 2018) and Iamarinus pontesi (type species).

Distribution: BRAZIL: states of Paraná and Santa Catarina ( Fig.21 ).

Figures

Figure 21. South Brazil,showing distribution of Iamarinus species. Shaded areas in the background are Morrone’s regionalization of the Neotropics (‘provinces’; Morrone et al. 2022): Araucaria Forest province (in light green) and Atlantic province (in dark green).