Uduba ibonia, Griswold & Ubick & Ledford & Polotow, 2022

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, Proceedings of the California Academy of Sciences 67, pp. 1-193 : 47-49

Uduba ibonia , new species

Figures 7 F , 9 E , 11 F , 20 B , 29 F , 45 A–C , 73 A, B , 81 C, F , Maps 1 , 13 .

Type material. Holotype male ( CASENT9006038 ) from montane rainforest at 1100m elevation at 7 km W Ranomafana , ca. 21º12ʹS, 47º27ʹE, Fianarantsoa Province, Madagascar, collected 22–31 October 1988, W. Steiner, deposited in the USNM . Paratype female ( CASENT9006035 ), from Parc National Ranomafana , Talatakely, 21º14.9ʹS, 47º25.6ʹE, Fianarantsoa Province, Madagascar, collected 11 April 1998 by D. Kavanaugh, deposited in CAS .

Etymology. The species epithet, ibonia, refers to an epic poem that has been told for at least several hundred years in various forms across the island of Madagascar; a noun in apposition.

Diagnosis. Uduba ibonia belong to Group I.a, the Uduba dahli group ( Map 13 ) of Group I, the Epigynal atrium group. They are cribellate, with a very small divided cribellum ( Fig. 20 B ). Males can be distinguished from those of other cribellate Uduba by having the palpus with TA3 a slender, pointed screw ( Fig. 29 F ) and the TA2 an elongate blade ( Figs. 29 F , 45 A, B ). The females can be distinguished from those of other cribellate Uduba that have an epigynal plate with median lobe surrounded by depressed atrium by having the posterior margin of atrium divided at ML apex, atrium with atrial side plate (AtSp) next to ML ( Fig. 73 B ), ML short, broad, length about equal to width; U. ibonia females are distinguished from those of U. platnicki in that the former have a divided cribellum ( Fig. 20 B ), whereas U. platnicki are ecribellate.

Description. Male (Holotype). Total length 14.29. Markings as in Figs. 9 E , 11 F . Carapace 8.36 long, 6.07 wide, 2.50 high; clypeus 0.43 high. Eye diameters: AME 0.34, ALE 0.32, PME 0.36, PLE 0.43. Chelicerae 3.79 long; sternum 3.86 long, 2.93 wide; labium 1.82 long; palpal coxae 2.75 long. Cribellum divided, very small. Spination: palpus–femur d0-0-1, p0-0-1, r0-0-1, tibia p1-0; leg I–femur d1-1-0-1, p0-0-0-2, r0-0-0-1, tibia d0-0-0-1, p0-1-1-0, v2-2-2-2, r0-1-1-0, metatarsus p1-1-0, v2-2-3, r1-1-0; leg II–femur d1-1-0-1, p0-0-1, r0-1-0-1, tibia d0-0-0-1, p0-1-1- 0, v2-2-2-2, r0-1-1-0, metatarsus p1-1-0, v2-2-3, r1-1-0; leg III–femur d1-1-1, p0-1-1-1, r0-1-1-0, tibia d0-0-1-0, p0-1-1-0, v2-0-2, r0-1-1-0, metatarsus p1-1-1-1, v2-2-2, r1-1-0-1; leg IV–femur d1- 1-0-1, p0-1-0-1, r0-0-0-1, tibia d0-0-1-0, p0-1-1-0, v2-2-2, r0-1-1-0, metatarsus p1-1-2, v2-2-2, r2- 1-2-1-2. Scopulae: cymbium, apicodorsal; strong beneath all tarsi. Leg measurements: I: 7.64 + 3.00 + 7.71 + 8.43 + 4.29 = 31.01; II: 7.00 + 2.86 + 6.36 + 7.21 + 3.79 = 27.21; III: 5.86 + 2.71 + 4.00 + 6.07 + 3.01 = 21.71; IV: 8.14 + 2.86 + 7.14 + 9.71 + 4.14 = 32.00; palpus: 3.14 + 1.29 + 1.43 + NA + 3.86 = 9.71. Leg formula 4123. Male palp (Ranomafana, CASENT9006036) ( Figs. 45 A–C ): palpal tibia 0.38 times cymbial length, RTA a short triangle ( Fig. 45 A ), length 0.21 tibia length, length 0.86 times width, with pointed apex, VTA conical, with broad base and slender apex ( Fig. 45 B ), length 0.31 tibia width, VTA length 1.60 times width; tibia with a long, slender prolateral spine but lacking stout spines; tegulum convex, without ridge, tegulum length 0.90 times width ( Figs. 45 A, B ), TA1 extends distad of tegulum apex, TA1 extends past TA3 apex by 1.285 times tegulum length; TA3 a slender, pointed screw, TA3 ends before TA2 apex, TA2 an elongate triangular blade, visible behind and beyond TA3, apex rounded ( Fig. 29 F ); MA simple with small prolateral hook ( Fig. 45 A ), origin at 0.46 times tegulum length, tegulum apex at 0.29 tegulum length from MA apex, length (including apical processes) 0.78 times width, MA small ( Figs. 45 A, C ), length 0.20 tegulum length, width 0.23 tegulum width; conductor fan concave. Female (Paratype, CASENT9006035): Total length 12.50. Markings as in Fig. 7 F . Carapace 6.70 long, 5.50 wide, 2.50 high; clypeus 0.45 high. Eye diameters:AME and ALE 0.24, PME 0.22, PLE 0.26. Chelicerae 3.20 long; sternum 2.80 long, 2.30 wide; labium 1.50 long; palpal coxae 2.30 long. Cribellum divided, very small ( Fig. 20 B ). Spination: palpus–femur d0-0-2, patella p1, tibia p2-1, tarsus p2-1-1; leg I–femur d1-0-0-2, tibia v2-2-2-1, metatarsus v2-2-3; leg II–femur d1-0-0, p0-0- 1, tibia v1-1-1-2, metatarsus v2-2-3; leg III–femur d0-0-0-1, p0-0-1-1, r0-0-1-1, tibia d0-1-0, p0- 1-1-0, v2-0-2, r0-1-1-0, metatarsus p1-2-2, v2-2-2, r1-1-2, tarsus v0-1-0; leg IV–femur d1-1-0, r0- 0-1, tibia v1-2-2, r0-1-1-0, metatarsus p1-1-0-2, v2-1-2-2, r1-2-1. Scopulae: strong ventral beneath all tarsi, beneath metatarsi I and II and apices of metatarsi III and IV. Leg measurements: I: 4.70 + 2.30 + 3.90 + 3.70 + 2.30 = 16.90; II: 4.20 + 2.20 + 3.20 + 3.10 + 2.10 = 14.80; III: 3.40 + 1.90 + 2.00 + 2.80 + 1.90 = 12.00; IV: 4.80 + 2.00 + 3.80 + 4.90 + 2.40 = 17.90; palpus: 2.40 + 1.20 + 1.40 + NA + 2.30 = 7.30. Leg formula 4123. Female genitalia ( Figs. 73 A, B , 81 C, F ): epigynal plate with median lobe surrounded by depressed atrium, shallow beside ML and forming deep sulci laterally ( Fig. 73 B ), epigynal plate width 1.43 times length; atrium sides weakly concave, atrium width 1.87 times atrium length; epigynum length 1.79 times atrium length, atrium width 0.73 times epigynum width; atrium plate width at side of ML 0.18 times ML width ( Fig. 81 C ), atrium lateral sulcus width at side of ML 0.21 times ML width; atrium and median lobe arise well anteriad of epigastric groove ( Fig. 81 C ), atrium origin at 0.26 of epigynal plate length, median lobe broad, widest at base, median lobe length 1.08 times width, ML does not extend to atrium apex, atrium extends 0.20 times epigynum length anteriad of ML, ML length 0.38 times epigynal length; lateral lobes narrow, atrium width 7.30 times LL width; copulatory openings beneath the atrial side plate (AtSp) next to ML ( Fig. 73 A ), distance between CO 0.35 times width of epigynal plate, CO distance from epigastric furrow 0.64 times epigynum length. Vulva ( Figs. 73 A , 81 F ) with spermathecal ducts making three to four, transverse curves, vulva length 0.82 times width, fertilization ducts close-together, vulva width 8.80 times distance between fertilization ducts.

Variation. Male (N = 4): Total length = 11.43–14.29, carapace length / width = 1.38–1.53, carapace height / width = 0.45–0.59, PER / carapace width = 0.38–0.40, PER / OAL = 2.33–3.06, PER / AER = 1.32–1.42, OAL / OQL = 1.00–1.08, OQP / OQA = 1.13–1.28, clypeus height / AME diameter width = 1.26–1.56, cheliceral length / clypeus height = 6.58–8.91, sternum length / width = 1.24–1.31, palpal coxa length / width = 2.07–2.27, femur I length / carapace width = 1.26–1.39, metatarsus I length / carapace width = 1.39–1.55, femur IV length / carapace width = 1.34–1.59, cymbium length / carapace width = 0.63–0.85, cymbium length / palpal patella length = 2.99–3.87, cymbium length / palpal tibia length = 2.70–3.87, cymbium length / palpal femur length = 1.23– 1.61, palpal tibia length / palpal patella length = 1.00–1.11. Female (N = 2): Total length = 11.80– 14.50, carapace length / width = 1.38–1.53, carapace height / width = 0.41–0.67, PER / carapace width = 0.44–0.68, PER / OAL = 2.82–3.56, PER / AER = 1.36–1.44, OAL / OQL = 1.00–1.10, OQP / OQA = 1.17–1.28, clypeus height / AME = 1.26–2.55, cheliceral length / clypeus height = 7.11–8.83, sternum length / width = 1.22–1.32, palpal coxa length / width = 1.89–2.26, femur I length / carapace width = 1.00–1.04, metatarsus I length / carapace width = 0.80–0.82, femur IV length / carapace width = 1.00–1.08, palpal tarsus length / carapace width = 0.49–0.51, palpal tarsus length / palpal patella length = 1.80–1.92, palpal tarsus length / palpal tibia length = 1.60– 1.71, palpal tarsus length / palpal femur length = 0.95–1.09, palpal tibia length / palpal patella length = 1.05–1.17. Genitalia as in Figs. 73 A, B , 81 C, F.

M aterial examined. MADAGASCAR: Fianarantsoa Province: 7 km W Ranomafana , ca. 21º12ʹS, 47º27ʹE, elev. 1100m, 22–31 October 1988, W. Steiner (holotype, CASENT9006038 , 1♂, USNM) , 8-21 October 1988, W. Steiner ( CASENT9006037 , 1♂, USNM) , “island in stream; montane rainforest,” 1–7 November 1988, W. Steiner ( CASENT9006036 , 1♂, USNM) ; Parc National de Ranomafana, Vatoharanana, 4.0 km SW Ranomafana (ville), 21°14.7ʹS, 047°26.0ʹE, elev. 1025m, “ pitfalls, slightly transitional lowland to lower montane rainforest”, 3–9 October 2000, S. Goodman [ FMNH #00-225], ( CASENT9064655 , 2♂, FMNH), ( CASENT9064664 , 1♂, FMNH) ; Parc National Ranomafana, Talatakely , 21º14.9ʹS, 47º25.6ʹE, “walking on ground”, 11 April 1998, D. Kavanaugh (paratype, CASENT9006035 , 1♀, CAS) ; Talatakely , 21º14.9ʹS, 47º25.6ʹE, elev. ca. 1200m, “under log”, 2 November 1998, V. F. Lee ( CASENT9006034 , 1♂, CAS) ; Talatakely , 21º15ʹS, 47º26ʹE, elev. ca. 915–1100m, 30 October–20 November 1998, V. F. Lee and K. Ribardo ( CASENT9006033 , 1♀, CAS) .

Natural history. The species Uduba ibonia lives in lowland, premontane and montane rainforest. Collection records suggest that this species may wander; the presence of a calamistrum and a very small cribellum suggests some use of cribellate silk.

Distribution. Specimens of Uduba ibonia are known only from the vicinity of Ranomafana National Park in Fianarantsoa Province of southeastern Madagascar ( Maps 1 , 13 ).

Figures

FIGURE 7. Habitus photos of Uduba spp., females, dorsal views. A. U. pseudoevanescens, CASENT9006007, from Forêt Marovato, MNHN Paris. B. U. evanescens (Dahl, 1901), CASENT9006090 from Ranomafana National Park. C. U. volana, Holotype (CASENT9006072) from 1400m elevation at Ambohimanga. D. U. goodmani, Holotype (CASENT9006074) from Réserve Naturelle Intégrale d’Andohahela. E. U. salegy, Paratype (CASENT9006045) from Parc National Montagne d’Ambre. F. U. ibonia, CASENT9006033 from Ranomafana National Park. G. U. schlingeri, CASENT9006075 from Parc National Ranomafana. H. U. barbarae, paratype (CASENT9006064), from Lokobe Forest on the island of Nosy Be. I. U. kavanaughi, paratype (CASENT9003517) from Parc National Ranomafana. J. U. woodae, paratype (CASENT9017834) from spiny forest at Lake Ranobe. K. U. woodae, CASENT9006092 from Ambovombe, Carougeau, Muséum Paris. L. U. madagascariensis (Vinson, 1863), CASENT9006029, from forest near village of Ambohimanga. Scale bars (see A, I) = 5 mm.

FIGURE 9. Habitus photos of Uduba spp., males, dorsal views. A. U. schlingeri, (CASENT9006077) from R. S. de Ivohibe. B. U. woodae, CASENT9017831 from Lake Ranobe. C. U. lehibekokoa, Holotype (CASENT9017929) from tropical dry forest in Parc National de Namoroka. D. U. salegy, Holotype (CASENT9006044) from montane rainforest in Parc National Montagne d’Ambre. E. U. ibonia, CASENT9006034 from Parc National Ranomafana. F. U. fandroana, CASENT9006103 from Forêt d’Ankazomivady. G. U. kavanaughi, Holotype (CASENT9029870) from evergreen forest in Parc National Ranomafana. H. U. lamba, Holotype (CASENT9042542) from rainforest in Réserve Nationale Intégrale Betampona. Scale bars: A–F, H = 5 mm, G = 10 mm.

FIGURE 11. Habitus drawings, Uduba ♂♂, dorsal views. A. U. salegy, Holotype (CASENT9006044) from Parc National Montagne d’Ambre. B. U. halabe, Paratype, (CASENT9006017) from Parc National Ranomafana. C. U. pseudoevanescens, Paratype (CASENT9006006) from Route d’Anosibe de Moramanga. D. U. rinha, (MRAC174.445) from 25 km W Morarano Chrome, Toamasina Province. E. U. rakotozafy, Holotype (CASENT9006024) from Parc National Périnet. F. U. ibonia, Holotype (CASENT9006038) from 7 km W Ranomafana. G. U. schlingeri (CASENT9006061) from 7 km W Ranomafana. Illustrations by Jenny Speckels. All to same scale, scale bar = 5.0 mm.

FIGURE 20. Uduba spp., females: cribellum or colulus, and base of anterior lateral spinnerets surrounded by soft, flexible cuticle, anterior to top. A. U. halabe, CASENT9017873 from Parc Nacional Ranomafana, entire cribellum. B. U. ibonia, CASENT9006035 from Parc Nacional Ranomafana, divided cribellum (note small size of spinning plates). C. U. pseudoevanescens, CASENT9006008 from Parc Nacional Périnet, divided cribellum. D. U. evanescens (Dahl, 1901), CASENT9024032 from Parc Nacional Ranomafana, colulus. E. U. madagascariensis (Vinson, 1863), CASENT9006028 from Forêt Analavelona, colulus. F. U. goodmani, holotype (CASENT9006074) from Réserve Naturelle Intégrale d’Andohahela, colulus. G. U. schlingeri, CASENT9006028 from Parc Nacional Ranomafana, divided cribellum (note large size of spinning plates at posterior margin of soft cuticle). Illustrations by Charles Griswold. Scale bar = 1.0 mm.

FIGURE 29. Uduba spp., color-coded comparisons of male left palpal tarsi, ventral views. A. U. evanescens (Dahl, 1901) (CASENT9024032) from Parc National Ranomafana. B. U. rakotofrah, paratype (CASENT9062794), from Anosyenne Mts. C. U. madagascariensis (Vinson, 1863) (CASENT9006026) from Ambohimanga. D. U. halabe, holotype (CASENT9006018) from Parc National Ranomafana. E. U. schlingeri, (CASENT9006062) from Parc National Ranomafana. F. U. ibonia, (CASENT9006036) from Parc National Ranomafana. G. U. rakotozafy, holotype (CASENT9006024) from Parc National Périnet. H. U. fisheri, (CASENT9007941) from Anjozorobe. I. U. rinha, (MRAC174.445) from 25 km W Morarano Chrome, Toamasina Province. Conductor (C), yellow; Median apophysis (MA), blue; TA1, purple; TA2, green; TA3, red. Illustrations by Charles Griswold and Jenny Speckels, not to scale.

FIGURE 45. Uduba ibonia, new species, (CASENT9006036), from Parc National Ranomafana, left male palpus. A. Prolateral. B. Ventral. C. Retrolateral. Illustrations by Jenny Speckels. C, conductor; Cm, cymbium; E, embolus; Eb, embolic base; MA, median apophysis; RTA, retrolateral tibial apophysis on male palp, typically arising apically; ST, subtegulum; T, tegulum; TA1, proapical apophysis of the tegulum; TA2, proapical apophysis of the tegulum; TA3, retroapical apophysis of the tegulum; UTA, basal tibial apophysis on male palp; VTA, ventral tibial apophysis on male palp. Scale bar = 0.5 mm.

FIGURE 73. Uduba spp., female genitalia drawings. A, B. U. ibonia, new species, paratype (CASENT9006035), from Parc National Ranomafana. C, F. U. ida, new species, holotype (CASENT9042534) from Station Forestière Analamazaotra. D, E. U. schlingeri, new species (CASENT9006057) from Parc National Ranomafana. B–D. Epigynum, ventral. A, E, F. Vulva, dorsal. Illustrations by Charles Griswold. Scale bar = 0.5 mm.

FIGURE 81. Uduba spp., ♀ genitalia. A, D. U. fisheri, new species, CASENT9026388 from Anjozorobe. B, E. U. rinha, new species, CASENT9006108 from R.S. Manongarivo. C, F. U. ibonia, new species, CASENT9006033, from Talatakely, Ranomafana National Park. A–C. Epigynum, ventral. D–F. Vulva, dorsal. BS, base of spermatheca of vulva; CD, copulatory ducts of vulva; CO, copulatory openings of epigynum; EF, epigastric furrow of abdomen; FD, fertilization duct of vulva; LL, lateral lobe of epigynum; ML, median lobe of epigynum. Scale bars = 0.2 mm.

MAP 1. Distributions of Uduba jayjay, Uduba ibonia MAP 2. Distributions of Uduba salegy, Uduba platnicki, and Uduba hainteny. Uduba halabe, Uduba funerea Simon 1906 and Uduba dahli (Simon 1903).

MAP 13. Distribution of Group I.a, the Uduba dahli MAP 14. Distribution of Group I.b, the Uduba woodae group of Group I, the Epigynal atrium group: Uduba group of Group I, the Epigynal atrium group: Uduba lamba, U. fandroana, U. hainteny, U. kavanaughi, U. plat- andriamihajai, U. balsama, U. schlingeri, U. taralily, nicki, U. halabe, U. salegy, U. dahli Simon 1903 and U. lehibekokoa and U. woodae. U. ibonia.