Wounaan yarigui Botero-Trujillo, Moreno-González & Prendini, 2024, sp. n.
Year: 2024
Type: other
Abstract: Wounaan yarigui, sp. n. urn:lsid:zoobank.org:act:A482587D-BEBF-4FBE-A34D-BD03ECC944E5 Figure 1, Figure 2, Figure 3A, Figure 4A,C, Figure 5A,C, Figure 6A,B, Figure 7A,C,E, Figure 8A,C,E, Figure 9A, Figure 10A,C, Figure 11A,C,E, Figure 12A–C, Figure 13A,B and Figure 16E and Table 1 Type Material. Holotype ♂ (IAvH I 2831), COLOMBIA: Santander Department: Carmen de Chucurí, Vereda La Belleza, 06 ◦ 34 ′ 13 ′′ N 73 ◦ 34 ′ 15 ′′ W, 844 m, tropical humid forest, pitfall, 22.ii.2018, J.C. Neita, E. Torres, and M.I. Castro. Diagnosis. Wounaan yarigui differs from Wounaan vanegasae as follows. The anterior margin of the carapace (♂) is semi-elliptical in W. yarigui (Figure 4 A) but slightly pointed in W. vanegasae. The anteromedian raised surface of the carapace (i.e., anterior to the median ocular area) is pronounced, obscuring the anteromedian epistome in dorsal aspect, in W. yarigui (at least in the ♂) (Figure 4 A) but moderate, not obscuring the epistome, in W. vanegasae. The fovea is very shallow and barely visible in W. yarigui (at least in the ♂) (Figure 4 A) but moderately shallow and distinct in W. vanegasae. The posterior pigmented area of the median sternum (mesosternum), which is typically infolded and not exposed, is divided longitudinally in W. yarigui (Figure 16 E), but entire in W. vanegasae (Figure 16 D). The pedipalp chela has a conspicuous scabrose surface retrolaterally and, to a lesser extent, dorsally in W. yarigui (at least in the ♂) (Figure 8 A, C and Figure 9 A), whereas the chela is predominantly smooth in W. vanegasae (Figure 17 B). The ventral part of the retrolateral surface of the pedipalp chela manus (i.e., the retrolateral surface aligned with the movable finger) (♂) is noticeably concave in W. yarigui (Figure 8 A, C) but planar in W. vanegasae (Figure 17 B). The retrolateral surface of the pedipalp fixed finger (♂) is planar in W. yarigui (Figure 8 A, C) but slightly convex, like the retrolateral surface of manus, in W. vanegasae (Figure 17 B). The ventral row of denticles on the pedipalp fixed finger (♂) is markedly sinuous in retrolateral aspect in W. yarigui (Figure 8 A) but slightly sinuous in W. vanegasae (Figure 17 B). Etymology. The specific epithet is a noun in apposition honoring the Yariguí indigenous people, a tribe that once inhabited the cloud forests of the Serranía de los Yariguíes, where the new species was collected. Description. Based on the holotype male (IAvH I 2831). Female unknown. Total length: Adult length, measured from anterior margin of carapace to posterior margin of pygidium (segment XII), 20.6 mm (Figure 3 A, Table 1). Color: Carapace and tergites dark reddish brown (Figures 4 A and 5 C). Sternites yellowish to brown, II–VIII each paler, yellow medially, brown laterally (Figure 5 C); IX entirely brown. Pygidium yellowish brown (Figure 12 A – C). Flagellum reddish brown, covered with reddish macrosetae, segments with anterior and posterior margins yellow (Figure 13 A, B). Pedipalp trochanter, femur, patella, tibia, and tarsus reddish chestnut (Figure 7 A, C, E and Figure 8 A, C, E); coxae paler (Figure 4 C). Legs yellowish to reddish brown, becoming progressively paler distally with tibia and tarsi yellow (Figures 3 A and 10 A, C). Chelicerae: Movable finger longer than fixed finger, hinged along dorsal margin, prolateral surface with dense brush of long, curved, reddish macrosetae (Figure 6 A, B); distal half of manus, prolateral, ventral, and to a lesser extent retrolateral surfaces each with dense brush of sublinear, reddish macrosetae; fixed finger with two well-developed teeth of similar size. Prosoma: Carapace surface scabrose, with shallow granules (Figure 4 A); anterior margin semi-elliptical; fovea short, very shallow, aligned with leg III trochanter; anteromedian epistome pronounced, acute; anterior third of carapace with distinct, smooth W-shaped area, without anterolateral oblique carinae between median and lateral ocelli; part of carapace anterior to median ocular surface raised medially, obscuring anteromedian epistome in dorsal aspect (Figure 4 A); median ocular area without superciliary carina between ocelli; lateral ocular tubercle with three (anterior, median, and posterior) medium to large, yellow peripheral ocelli surrounding two (anterodorsal and posteroventral) minute, darkened central ocelli (similar to Figure 15 A). Anterior sternum (prosternum) without median longitudinal suture (Figures 4 C and 16 E); posterior stylet-like part relatively broad, arrow-shaped, and completely exposed, not obscured by coxae of legs II. Median sternum (mesosternum) infolded, not completely exposed; markedly sclerotized, pigmented areas anteriorly (exposed) and posteriorly (obscured), separated by pale, depigmented area medially (Figure 16 E); posterior pigmented area longitudinally divided. Pedipalps: Surfaces predominantly smooth and shiny, but with fine yet distinct reticulation (visible at great magnification) (Figure 7 A, C, E and Figure 8 A, C, E). Coxa smooth ventrally; apophysis densely covered with macrosetae, terminating anteriorly in tubercle. Trochanter smooth dorsally and retrolaterally (Figure 7 A), coarsely granular prolaterally, and sparsely granular ventrally; prodorsal surface with five tubercles; principal (fourth) tubercle round, shorter than adjacent (third and fifth) tubercles (Figure 7 A); proventral surface with two tubercles, proximal tubercle small, distal tubercle moderately enlarged. Femur smooth dorsally (Figure 7 C), retrolaterally, and ventrally, predominantly smooth prolaterally; prodorsal surface with or without obsolete tubercle; proventral surface with large spiniform tubercle (Figure 7 C). Patella smooth dorsally (Figure 7 E), retrolaterally, and ventrally, predominantly smooth prolaterally; proventral surface with moderate distal tubercle, distinct. Patellar apophysis longer than patella width (Figure 7 E and Table 1); anterior margin with serrate row of 7 or 8 granules; posterior margin without granules. Tibia bulky (not barrel-shaped), manus markedly expanded dorsoventrally, subcircular in lateral aspect (Figure 8 A, C, E); retrolateral surface and to a lesser extent dorsal surface with conspicuous scabrose surface covering large part of manus and extending onto fixed finger (Figure 8 A, C and Figure 9 A), prolateral surface sparsely granular, ventral surface smooth; manus prodorsal margin with row of prominent granules extending onto fixed finger (Figure 8 C); proventral surface with large, spiniform distal tubercle (Figure 8 C, E); ventral part of retrolateral surface of manus (i.e., retrolateral surface aligned with movable finger) noticeably concave (Figure 8 A, C). Fixed finger, ventral margin with serrate row of denticles; retrolateral surface planar (Figure 8 A, C); row of denticles markedly sinuous in retrolateral aspect (Figure 8 A). Tarsus (movable finger), dorsal margin with serrate row of denticles and obsolete basal lobe (Figure 8 A); distal lobe shallow (possibly produced by subtle median emargination of denticle row); proventral margin with serrate row of denticles progressively increasing in size distally (Figure 8 C, E); prolateral surface with smooth longitudinal carina between denticle rows. Legs: Leg I tarsus, first tarsomere shortest, shorter than wide, fourth to sixth about as long as wide, seventh and eighth slightly longer than wide, and second, third, and ninth about three times longer than wide (Figure 10 A, C); ninth tarsomere terminating in single claw (or clawlike seta) (Figure 10 C). Legs II–IV basitarsi each with proventral and retroventral spurs distally; telotarsi each with ventral macrosetae setiform and arranged irregularly, not in rows. Leg IV tibia with proventral spur distally. Tibia dorsal surface with one (legs II – IV) or two (leg I) trichobothria distally. Opisthosoma: Tergites surface scabrose, densely granular (Figure 5 A); I undivided (entire), II–IV each with distinct median longitudinal suture, complete (II and III) or partial, anteriorly only (IV), V–IX undivided (entire); II and III unmodified, each similar in length to IV, or II slightly longer; II–VIII, posterior margins unmodified, linear (not emarginate). Pleural membranes densely covered with markedly sclerotized, elongated granules (similar to Figure 9 B). Sternites densely punctate, lateral margins scabrose (Figure 5 C); II (genital) undivided (entire), dorsal (internal) surface with genital sclerites relatively simple (Figure 11 A, C, E), posterior margin moderately enlarged and lobate (dilate), especially medially, border sinuous (Figure 5 C); III and IV each with median longitudinal suture, weakly defined on III, complete on IV, otherwise unmodified; V–VIII each with median longitudinal suture vestigial (anteriorly only); IX undivided (entire); V–IX unmodified. Segments X–XII forming narrow, annular pygidium (Figure 12 A – C); XII (anal segment), dorsal surface slightly angular posteriorly, dorsolateral ommatoids well developed, medium-sized, circular (Figure 12 A, B). Pygidial flagellum comprising at least 13 segments (additional segments may be missing); each segment with numerous macrosetae (some missing), without ventromedian ommatoids; segment length usually three to five times the maximum width but up to eight or ten times the maximum width in some cases (Figure 13 A, B); similar to or shorter than posterior segment of pygidium (XII); basal (first) segment unmodified, linear in lateral aspect. Male gonopods: Chitinized arches and gonopods as in Figure 11A,C,E. LoD circular, flat, and membranous; Fi medium, subtriangular, with sclerotized lateral tips; LoL1 1.5 times broader than long, trapezoidal, membranous, globose, with vestigial sclerotized wrinkles and rounded posterior margin not extending beyond posterior margin of chitinized arch; LoL2 membranose, flat, covered by LoL1; Me 2.2 times longer than wide, subcylindrical, sclerotized laterally and becoming thinner posteriorly; LaM, Fu, and Pi absent.
Authors: Botero-Trujillo, Ricardo, Moreno-González, Jairo A., Prendini, Lorenzo
Language: English
Subfield: Genetics
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W7091625348
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