Uduba ida, 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 : 49-50

Uduba ida , new species

Figures. 73 C, F , Maps 5 , 21 .

Type material. Holotype female ( CASENT9042534 ) from sifted litter in montane rainforest at 980m elevation in Station Forestière Analamazaotra (18°23ʹ05ʺS, 048°24ʹ46ʺE), Toamasina Province, Madagascar, collected 11–13 December 2007 by Brian L. Fisher, deposited in CAS.

Etymology. The species name honors Mrs. Ida George Meikle , mother-in-law of Charles Griswold. The name memorializes her for her encouragement and appreciation of all things natural and arachnological.

Diagnosis. Uduba ida are an Unclassified species ( Map 21 ) with a divided cribellum. Females of Uduba ida can be distinguished from those of other Uduba species by their unique female genitalia: the epigynal plate ( Fig. 73 C ) is trapezoidal, narrowed anteriorly, with no distinction between ML and LL and with a strongly marked posterior margin at the epigastric furrow and copulatory openings exposed near the posterior margin of plate; vulva ( Fig. 73 F ) with spermathecal ducts forming five tight transverse loops in a longitudinal stack, duct returns posteriad within these loops, vulva length 1.30 times width. Males unknown.

Description. Male: Unknown. Female (Holotype): Total length 7.60. Markings typical for

Uduba . Carapace 3.40 long, 2.45 wide, 1.50 high; clypeus 0.15 high. Eye diameters: AME 0.12, ALE 0.15, PME 0.16, PLE 0.18. Chelicerae 1.80 long; sternum 1.60 long, 1.40 wide; labium 0.80 long; palpal coxae 1.25 long. Ratios– carapace length / width = 1.39, carapace height / width = 0.61, PER / carapace width = 0.47, PER/OAL = 2.85, PER/AER = 1.36, OAL/OQL = 1.25, OQP/ OQA = 1.33, clypeus height / AME = 1.25, cheliceral length / clypeus height = 12.00, sternum length / width = 1.14, palpal coxa length / width = 2.50, femur I length / carapace width = 1.02, metatarsus I length / carapace width = 0.78, femur IV length / carapace width = 1.02, palpal tarsus length / carapace width = 0.41, palpal tibia length / palpal patella length = 1.67, palpal tarsus length / palpal tibia length = 1.43, palpal tarsus length / palpal femur length = 0.83, palpal tibia length / palpal patella length = 1.17. Cribellum divided. Spination: palpus–femur d0-1-2, tibia p2-1, tarsus p2-1; leg I–femur d1-0-0, p0-0-1, tibia v2-2-2-2, metatarsus p0-0-1, v2-2-2; leg II–femur d1-0-0, p0-0-1, tibia p0-0-1, v1-1-1-2, metatarsus p0-0-1, v2-2-2; leg III–femur d1-0-0-1, p0-0-0-1, tibia d0-1-0, p0-1-1-0, v2-2-2, r0-1-1-0, metatarsus d0-1-0-0, p1-1-2, v2-2-2, r1-1-2; leg IV–femur d1-0-0, tibia v2-2-2, metatarsus p0-1-2, v2-2-2, r1-1-2. Scopulae: weak ventral beneath tarsi I and II. Leg measurements: I: 2.50 + 1.10 + 1.90 + 1.90 + 1.30 = 8.70; II: 2.10 + 1.10 + 1.60 + 1.60 + 1.20 = 7.60; III: 2.30 + 0.80 + 1.10 + 1.20 + 1.00 = 6.40; IV: 2.50 + 1.00 + 1.90 + 2.30 + 1.30 = 9.00; palpus: 1.20 + 0.60 + 0.70 + NA + 1.00 = 3.50. Leg formula 4123. Female genitalia: epigynal plate ( Fig. 73 C ) without depressed atrium, trapezoidal, narrowed anteriorly, no distinction between ML and LL, epigynal plate width 1.11 times length, with strongly marked posterior margin at epigastric furrow and copulatory openings exposed near posterior margin of plate; distance between copulatory openings 0.46 times epigynum width, CO origin at 0.15 of epigynum length, extant of plate laterad to copulatory openings equals 0.125 times plate width. Vulva unique ( Fig. 73 F ) with spermathecal ducts forming five tight transverse loops in longitudinal stack, duct returns posteriad within these loops, vulva length 1.30 times width, fertilization ducts widely spaced, vulva width 3.64 times distance between fertilization ducts.

Variation. Unknown: no males have been examined and only the unique holotype female is known.

M aterial examined. MADAGASCAR: Toamasina Province: Station Forestière Analamazaotra , 18°23ʹ05ʺS, 048°24ʹ46ʺE, elev. 980m, sifted litter in montane rainforest, 1–13 December 2007, B. L. Fisher (Holotype, CASENT9042534 , 1♀, CAS) .

Natural history. The unique specimen of the cribellate species Uduba ida was found in montane rainforest leaf litter.

Distribution. Uduba ida are known only from the type locality in east central Madagascar ( Maps 5 , 21 ), near the town of Périnet, which is an area renowned in Madagascar for species richness and endemism.

Figures

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.

MAP 5. Distributions of Uduba schlingeri, Uduba MAP 6. Distributions of Uduba andriamihajai and volana and Uduba ida. Uduba goodmani.

MAP 21. Distribution of Unclassified species: Uduba sarotra, U. ida, U. lakroa and Uduba madagascariensis (Vinson, 1863).