Uduba rinha Griswold, Ubick, Ledford & Polotow, 2022, new species
Creators: name: Griswold, Charles
name: Ubick, Darrell
name: Ledford, Joel
name: Polotow, Daniele
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Udubidae
Uduba
Uduba rinha

description: Uduba rinha, new species   
Figures 6 D, E, 8 A, 11 D, 29 I, 59 A–C, 71 G, H, 81 B, E, Maps 3, 18.  
 Type material. Holotype male (CASENT9018660) and paratype female (CASENT9082218) collected from pitfall traps at 140m elevation in dry tropical forest at Parc National de Namoroka, Mahajanga Province, Madagascar, 4–8 November 2002, Fisher-Griswold Arthropod Team, deposited in CAS.   
 Remarks. Males of the similar species Uduba rinha and U. irwini may be distinguished by the TA2 form. Association of the males and females of U. rinha is unproblematic in that several were collected together at Parc National de Namoroka. Two similar females, one from Manongarivo (CASENT9006108) and a second from Tsingy de Bemeraha (CASENT9009383), are more difficult to associate with species. Females of Uduba rinha have the epigynal plate posterior of the ML smooth or grooved and the CO hidden beneath the ML hood. The female from Manongarivo (CASENT9006108) that has the CO hidden beneath the ML hood is assigned to species U. rinha. The female from Tsingy de Bemeraha (CASENT9009383) that has exposed copulatory openings differs from U. rinha and is assigned to U. irwini (see above).   
 Etymology. The species epithet is a patronym in honor of Mr. Harin’Hala Rin’Ha, entomologist and explorer-naturalist who conducted most of the fieldwork for the Schlinger et al., Malaise Trap Survey of Madagascar arthropods. His efforts have revealed numerous new species of insects and arachnids.   
  Diagnosis. Uduba rinha  are members of Group IV, the Uduba rinha group (Map 18). They have a divided cribellum. Males can be distinguished from those of other Uduba except U. irwini by the simple, trapezoidal MA (Figs. 59 A–C ); U. rinha may be distinguished from U. irwini by having the TA2 a flexible hook or curlicue (Fig. 29 I) (U. irwini has the TA2 an erect, rectangular spike, Fig. 46 B). The females can be distinguished from those of other cribellate Uduba by having the epigynum lateral lobes fused medially (Figs. 71 G, 81 B). The females of U. rinha have copulatory openings that are hidden beneath the sides of the ML (Figs. 71 G, 81 B); the lone female of U. irwini has the copulatory openings exposed just posteriad of the ML (Fig. 71 C).   
 Description. Male (Holotype): Total length 10.00. Markings as in Figs. 8 A, 11 D. Carapace 5.50 long, 3.60 wide, 1.70 high; clypeus 0.20 high. Eye diameters: AME 0.16, ALE 0.20, PME 0.22, PLE 0.24. Chelicerae 2.10 long; sternum 2.30 long, 1.80 wide; labium 1.00 long; palpal coxae 1.50 long. Divided cribellum. Spination. (MRAC 174.445): palpus–femur d1-1-1; leg I–femur d0- 0-2, p0-1-2, r1-1-1-1, patella p1, r1, tibia d1-0-1-1, p0-1-1-0, v2-2-2-2, r0-1-1-0, metatarsus p1-1- 2, v2-2-2, r1-1-1; leg II–femur d1-1-1, p0-1-0-1, r0-1-0-1, patella p1, tibia d0-1-0, p0-1-1-0, v1-2- 2, r0-1-0-0, metatarsus p1-1-2, v2-2-2, r1-1-1; leg III–femur d1-1-1, p1-1-1-1, r1-1-1-1, patella r1, tibia d0-1-0, p0-1-1-0, v1-0-2, r0-1-1-0, metatarsus d0-1-0, p1-1-2, v2-2-2, r1-1-2; leg IV–femur d1-1-1, p0-1-0-1, r0-0-0-1, tibia d0-1-0, p0-1-1-0, v2-2-2, r0-1-1-0, metatarsus d0-1-0, p1-1-2, v1- 1-1-2-1, r1-2-1. Scopulae: cymbium, apicodorsal; tarsi I–IV, ventral. Leg measurements (Holotype): I: 4.50 + 2.00 + 4.30 + 4.30 + 2.60 = 17.70; II: 3.80 + 1.80 + 3.30 + 3.30 + 2.20 = 14.40; III: 3.20 + 1.40 + 2.00 + 2.50 + 1.60 = 10.70; IV: 3.20 + 1.80 + 3.30 + 2.60 + 1.60 = 12.50; palpus: 2.00 + 0.80 + 0.80 + NA + 2.30 = 5.90. Leg formula 1243. Male palp (MRAC 174.445): palpal tibia 0.36 cymbial length, RTA long, curved to ventral, RTA length 0.59 times tibia length, length 2.00 times width, with sharply-pointed apex (Fig. 59 C), VTA short, conical, blunt (Figs. 59 A–C), length 1.44 times width, length 0.48 times tibia width; tibia lacking stout spines; tegulum convex, without ridge, tegulum length 1.08 times width; TA1 extends distad of tegulum apex, TA1 extends past TA3 apex by 1.21 times tegulum length; TA3 a transverse hook, TA3 extends apicad of TA2 by 1.175 tegulum length, TA2 small, curlicue-shaped, soft and flexible, extends partially in front of TA3 (Figs. 29 I, 59 A); MA a broad, flat trapezoid, origin at 0.40 times tegulum length, extends nearly to tegulum apex, tegulum apex at 0.09 tegulum length from MA apex, length (including apical processes) 1.05 times width, MA large, length 0.38 tegulum length, width 0.39 tegulum width (Figs. 59 A, B); conductor fan entire (Fig. 59 C). Female (paratype): Total length 8.60. Markings as in Figs. 6 D, E. Carapace 4.80 long, 3.40 wide, 1.90 high; clypeus 0.30 high. Eye diameter: AME 0.14, ALE 0.18, PME 0.20. Chelicera 2.20 long; sternum 2.10 long, 0.80 wide; labium 1.20 long; palpal coxae 1.60 long. Divided cribellum. Spination: palpus–femur d0-1-2, patella p1- 0, tibia p2-0, tarsus p2-1; leg I–femur d1-0-0, p0-0-2, tibia v2-2-2-2, metatarsus v2-2-3; leg II– femur d1-0-0, p0-0-1, tibia p0-1-0, v1-1-2, metatarsus p0-1-0, v2-2-3; leg III–femur d1-0-0-1, p1- 0-1, r0-1-0, tibia d1-1-0, p0-1-1-0, v1-1-2, r0-1-1-0, metatarsus d1-0-0-0, p1-1-2, v2-2-2, r1-1-2, tarsus v0-1-0; leg IV–femur d1-0-0-0, tibia v1-2-2, r1-0-1, metatarsus p0-0-0-2, v2-1-2-2, r0-0-1- 2. Scopulae: ventral on tarsi I–IV and apices of metatarsi I and II. Leg measurements: I: 3.50 + 1.80 + 2.80 + 2.40 + 1.90 = 12.40; II: 3.00 + 1.60 + 2.30 + 2.10 + 1.70 = 10.70; III: 2.50 + 1.20 + 1.30 + 1.70 + 1.30 = 8.00; IV: 3.50 + 1.60 + 2.70 + 2.80 + 1.50 = 12.10; palpus: 1.80 + 0.80 + 0.90 + NA + 1.50 = 5.00. Leg formula 1423. Female genitalia (paratype): epigynal plate without depressed atrium, plate width 1.32 times length (Fig. 71 G); median lobe and lateral lobes differentiated only in anterior half of plate, distance from posterior margin of ML to epigastric furrow 0.83 times epigynum length; median lobe (Fig. 81 B), a flat plate with lateral margins extending around to posterior, nearly meeting in middle, broad, ML width between bases of LL 0.59 times epigynum width, ML width 4.20 times LL width at sides of ML; median lobe width 0.38 times epigynum width, ML width 0.45 times ML length, with copulatory openings hidden beneath lateral margins of ML (Fig. 71 G), distance between copulatory openings 0.56 times epigynum width, CO origin at 0.70 of epigynum length. Vulva (Fig. 71 H) with spermathecal ducts forming three longitudinal loops, vulva length 0.61 times width, fertilization ducts widely separated, vulva width 2.68 times distance between FD (Fig. 81 E).   
 Variation. Male (N= 5): Total length 8.14–10.00; carapace length / width = 1.40–1.54, carapace height / width = 0.42–0.56, PER / carapace width = 0.36–0.81, PER / OAL = 2.48–2.92, PER / AER = 1.31–1.42, OAL / OQL = 1.07–1.15, OQP / OQA = 1.10–1.43, clypeus height / AME = 1.18–1.56, cheliceral length / clypeus height = 8.00–11.60, sternum length / width = 1.28–1.41, palpal coxa length / width = 2.41–3.35, femur I length / carapace width = 1.22–1.26, metatarsus I length / carapace width = 1.17–1.35, femur IV length / carapace width = 0.89–1.45, cymbium length / carapace width = 0.56–0.70, cymbium length / palpal patella length = 2.36–2.91, cymbium length / palpal tibia length = 2.50–2.91, cymbium length / palpal femur length = 0.71–1.15, palpal tibia length / palpal patella length = 0.93–1.09. Female (N= 3): Total length 8.60–10.60; carapace length / width = 1.41–1.56, carapace height / width = 0.54–0.62, PER / carapace width = 0.39– 0.44, PER / OAL = 3.13–3.19, PER / AER = 1.32–1.39, OAL / OQL = 1.05–1.29, OQP / OQA = 1.12–1.23, clypeus height / AME = 1.75–2.50, cheliceral length / clypeus height = 6.50–7.71, sternum length / width = 1.17–1.35, palpal coxa length / width = 2.29–2.38, femur I length / carapace width = 0.97–1.05, metatarsus I length / carapace width = 0.71–0.85, femur IV length / carapace width = 0.95–1.05, cymbium length / carapace width = 0.41–0.44, palpal tarsus length / palpal patella length = 1.67–1.88, palpal tarsus length / palpal tibia length = 1.50–1.67, palpal tarsus length / palpal femur length = 0.81–1.00, palpal tibia length / palpal patella length = 1.10–1.13. Female genitalia vary as in Figs. 71 G, H, 81 B, E.   
 M aterial examined. MADAGASCAR: Antananarivo Province: Antananarivo, October 1988, W. Steiner (CASENT9006040, 1♂, USNM). Antsiranana Province: R.S. Manongarivo, 10.8 km 229°SW Antanambao, 13°57ʹ42ʺS, 048°26ʹ00ʺE, elev. 400m, sifted litter, rainforest, 8 November 1998, B. L. Fisher [BLF1996] (CASENT9006108, 1♀, CAS). Mahajanga Province: Parc National de Namoroka, 9.8 km 300°WNW Vilanandro, 16°28ʹ00ʺS, 045°21ʹ00ʺE, elev. 140m, pitfall trap in tropical dry forest, 4–8 November 2002, Fisher, Griswold et al. [BLF6444], (Holotype Male, CASENT9018660, 1♂, CAS), (Paratype Female, CASENT9082218, 1♀, CAS), (CASENT9065644, 2♂, 1♀, CAS), (CASENT9065645, 2♂, CAS), (CASENT9065646, 2♂, CAS), (CASENT9065647, 2♂, CAS), (CASENT9065648, 2♂, CAS); Analamanitra Forest, 14 km NE of Misinjo, 16°8ʹS, 45°42ʹE, elev. 20m, dense dry forest, malaise, 9–16 October 2007, M. Irwin and R. Harin’Hala [MG-38-04] (CASENT9042527, 1♂, CAS). Toamasina Province: 25 km W Morarano Chrome, (coordinates approximate) 17º45ʹS, 48º10ʹE, forest, yellow plate, 1–25 October 1991, A. Pauly (MRAC174.445, 1♂, MRAC).   
 Natural history. Collections are from dry forest and there is even one specimen labeled as coming from Antananarivo, although the habitat for this specimen, urban or not, is not specified. Specimens were taken on the forest floor in sifted litter and yellow pan traps and above the floor in a malaise trap. Uduba rinha are cribellate but we have no records of how they use cribellate silk.   
 Distribution. The species Uduba rinha is recorded on the west side of the great escarpment across the northern half of Madagascar on the high plateau and in western dry forests (Maps 3, 18).
description: Published as part of Griswold, Charles, Ubick, Darrell, Ledford, Joel & Polotow, Daniele, 2022, A Revision of the Malagasy Crack-Leg Spiders of the Genus Uduba Simon, 1880 (Araneae, Udubidae), with Description of 35 New Species from Madagascar, pp. 1-193 in Proceedings of the California Academy of Sciences 67 on pages 77-79, DOI: 10.5281/zenodo.13158554