Guriurius Marta, Bustamante, Ruiz & Rodrigues 2022, gen. nov.
Creators: name: Marta, Kimberly S.
name: Bustamante, Abel A.
name: Ruiz, Gustavo R. S.
name: Teixeira, Renato A.
name: Hagopián, Damián
name: Brescovit, Antonio D.
name: Valiati, Victor Hugo
name: Rodrigues, Everton N. L.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Guriurius

description: Guriurius Marta, Bustamante, Ruiz & Rodrigues, gen. nov.
urn:lsid:zoobank.org:act: D4472965-102F-45C8-BA32-691800B2DDBA
Figs 1–34, 59–60, 69–78
Type species. Guriurius minuano Marta, Bustamante, Ruiz & Rodrigues, sp. nov.
Etymology. The name is a combination of “Guri”, which means “boy” in the gaúcho (southern Brazil) culture, and Hurius, type genus of the tribe. Masculine in gender.
Diagnosis. Guriurius is the only huriine genus in the tribe that has the RvTA with a fold ventrally and serrulate distal edge (like denticles; Figs 5–8, 21–22, 25–26, 31–34, 59 – 60), and females with a sclerotized dorsal plate that covers part of the copulatory ducts (Figs 13–14, 23–24).
Males of Guriurius resemble those of Atelurius, Scoturius and Urupuyu by the general shape of the cymbium, the circular tegulum, and the dorso-prolateral embolar path around the tegulum (Figs 5, 21, 25, 31). In addition, males resemble those of Simonurius by having a long and sinuous RTA and by the RvTA not exceeding the ventral region of the tegulum (Figs 59–60). Males of Guriurius differ from these genera by the shape of RvTA (see above). Females of Guriurius resemble those of Atelurius and Scoturius in the large copulatory openings forming an atrium (Figs 13, 23, 47, 68), but differ from those by the spermathecae arranged in the anterior region of the atrium (Figs 13–14). Finally, females of Guriurius differ from those of Hurius, Scoturius and Urupuyu by the presence of large and tubular LPO (Figs 14, 24).
Description. Length 3.0–4.0, yellow-brown salticids (Figs 1–4, 9–12, 15–20, 27–30). Carapace reddish-brown, granulated cephalic region (Fig. 69) lighter with white setae on sides, dark thoracic region and reddish posterior slope (Figs 1, 9, 19–20, 27). Anterior half of thoracic region at the same level of cephalic region; posterior thoracic slope abrupt. Eyes surrounded by black spots and white scales. Chelicera small and vertical in both sexes (not dimorphic), promargin with four fused teeth (distal one reduced), and retromargin with one tooth. Legs yellow to dark yellow with brown spots on distal portion. Leg formula: 1423. Tarsal claws small, not surpassing subungueal sulci. Inferior teeth of tarsal claws of equal size in males, and the distal one larger in females. Claw tufts poorly developed. Male palp: femur macrosetae 1d. RTA without lobes, sclerotized and sinuous (Figs 5, 8, 22, 26, 31, 34). RvTA projected ventrally below the tegulum, with denticles (See arrow in Fig. 60) and a fold (angular or circular shape (See arrow in the Figs 5, 21, 25, 31). Cymbium suboval (Figs 6, 32), with a tuft of setae at the apex (Fig. 32). Circular tegulum, oblique in relation to the cymbium middle line (axis). Embolus fixed to the tegulum, ribbonlike; embolar base dorso-prolateral, embolar path around the tegulum (Figs 5, 7, 21, 25, 31). Male with epiandrous fusules (examined only in G. minuano; Fig. 70). Epigyne: the epigynal plate is bilobed on posterior border, wider than long, with LPO (Figs 14, 24). Copulatory openings C-shaped, forming an atrium in the medial region of the epigyne (Figs 13, 23). In dorsal view, a chitinized plate covers half of the copulatory ducts (See arrow in the Figs 14, 24). Copulatory ducts arranged in parallel and close to each other in the medial region, can be visualized in ventral view, through the atrium, and above the atrium (Figs 13, 23). The CD overlapping the spermathecae (Fig. 24). Spermathecae kidney-shaped with the base of fertilization duct placed above spermathecae at anterior region of epigynum (Fig. 24). Abdomen: dorsum yellow with brown chevrons (see arrow in the Figs 1, 9, 27); venter with a median longitudinal brown stripe of irregular contours; sides with brown longitudinal band (Figs 3, 11, 29). Spinnerets (Figs 71–76; examined only in G. minuano, male): PLS with about 11–12 aciniform spigots and some tartipores (Figs 71–72); PMS with a single minor ampullate spigot (mAP) and three or four aciniform (ac) spigots (Figs 73–74); ALS with one major ampullate spigot (MAP) and one reduced nubbin (n), surrounded by about 10–12 piriform (pi) spigots and some tartipores (ta) (Figs 75–76). Coloration of spinnerets as in legs.
Distribution. Brazil [São Paulo, Paraná and Rio Grande do Sul], Uruguay [Montevideo and Rivera] and Argentina [Buenos Aires] (Figs 77–78).
Natural history. Species were collected in arboreal and shrub microhabitats.
Composition. Two species: Guriurius minuano Marta, Bustamante, Ruiz & Rodrigues sp. nov. (type species) and Guriurius nancyae Marta, Bustamante, Ruiz & Rodrigues sp. nov.
description: Published as part of Marta, Kimberly S., Bustamante, Abel A., Ruiz, Gustavo R. S., Teixeira, Renato A., Hagopián, Damián, Brescovit, Antonio D., Valiati, Victor Hugo & Rodrigues, Everton N. L., 2022, A new huriine genus and notes on morphological characters (Araneae: Salticidae: Salticinae), pp. 431-457 in Zootaxa 5124 (4) on pages 434-435, DOI: 10.11646/zootaxa.5124.4.2, http://zenodo.org/record/6417643