Uduba volana, 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 : 89-90

Uduba volana , new species

Figures 7 C , 77 D–F , Maps 5 , 16.

Type material. Holotype female ( CASENT9006072 ) dug from a burrow at 1400m elevation from Ambohimanga , Antananarivo Province, Madagascar, collected 2 November 1993 by C. Griswold, deposited in CAS.

Etymology. The species epithet is from the Malagasy volana volana, meaning a crescent moon; a noun in apposition.

Diagnosis. Uduba volana are members of Group II, the Epigynum lateral projection group, or Uduba evanescens group (Map 16). They have a divided cribellum. Females can be distinguished from those of other Uduba by having the epigynal plate wide (width 1.52 times length) and with the lateral ears very slender, LL side width 1.25 times LL side length ( Figs. 77 D, E ). Males are unknown.

Description. Male: Unknown. Female (holotype): Total length 13.71. Markings as in Fig. 7 C . Carapace 5.79 long, 3.71 wide, 2.57 high; clypeus 0.29 high. Eye diameters: AME 0.21, ALE, PME and PLE 0.27. Chelicerae 2.79 long; sternum 2.71 long, 2.00 wide; labium 1.21 long; palpal coxae 1.96 long. Ratios– carapace length / width = 1.56, carapace height / width = 0.69, PER / carapace width = 0.67, PER/OAL = 2.77, PER/AER = 1.33, OAL/OQL = 1.00, OQP/ OQA = 1.17, clypeus height / AME = 1.33, cheliceral length / clypeus height = 9.75, sternum length / width = 1.36, palpal coxa length / width = 1.83, femur I length / carapace width = 1.08, metatarsus I length / carapace width = 0.73, femur IV length / carapace width = 1.06, palpal tarsus length / carapace width = 0.38, palpal tibia length / palpal patella length = 1.33, palpal tarsus length / palpal tibia length = 1.33, palpal tarsus length / palpal femur length = 0.69, palpal tibia length / palpal patella length = 1.00. Divided cribellum. Spination: palpus–femur d0-0-2, patella p1-0, tibia p2-0, tarsus p2-1; leg I–femur d1-0-0, p0-0-2, tibia v2-2-2, metatarsus v2-2-3; leg II–femur d1-0-0, p0-0-1, tibia p0-1-1-0, v1-1-2, metatarsus v2-2-3; leg III–femur d1-1-0-0, p1-0-1-1, tibia d1-0-0, p0-1-1-0, v1-0-2, r0-1-1-0, metatarsus p1-2-2, v2-2-2, r1-1-2, tarsus v1-0; leg IV–femur d1-0-0, tibia v0-1- 2, r1-0-1, metatarsus p1-2-2, v2-1-2-2, r1-2-2. Scopulae: strong ventral beneath tarsi I–IV, beneath metatarsi I and II and beneath apices of metatarsi III and IV. Leg measurements: I: 4.00 + 1.86 + 2.93 + 2.71 + 1.64 = 13.14; II: 3.36 + 1.79 + 2.36 + 2.29 + 1.57 = 11.36; III: 2.71 + 1.43 + 1.29 + 1.86 + 1.14 = 8.43; IV: 3.93+ 1.79 + 2.93 + 2.93 + 1.71 = 13.29; palpus: 2.07 + 1.07 + 1.07 + NA + 1.43 = 5.64. Leg formula 4123. Female genitalia: epigynal plate without depressed atrium, lateral lobes extending to sides forming slender, earlike lobes ( Figs. 77 D, E ), plate width 1.52 times length; width between bases of LL 0.33 times epigynum width; lateral ears (LL side) width 0.17 times width epigynum, lateral ears (LL side) very slender, width 1.25 times LL side length, arising far from epigastric furrow; median lobe a flat plate, each side with a bulge beneath the transverse hood formed by the posterior margin of the LL, width 0.33 times epigynum width, 0.66 times ML length, with copulatory openings beneath near ML bulge beneath LL hood at 0.51 epigynum length from epigastric furrow, distance between copulatory openings 0.60 times epigynum width. Vulva ( Fig. 77 F ) with spermathecal ducts forming 2–3 loose, transverse loops, vulva length 0.68 times width, fertilization ducts widely separated, vulva width 5.91 times distance between FD.

Variation. Unknown: only the holotype female is known.

M aterial examined. MADAGASCAR: Antananarivo Province: Ambohimanga , 18º44ʹS, 47º34ʹE, elev. 1400m, “from short burrows in road cut, night collecting,” 2 November 1993, C. Griswold, S. Larcher, N. Scharff [CEG009] (holotype, CASENT9006072 , 1♀, CAS) .

Natural history. The cribellate female of Uduba volana was collected from a short burrow on an incline in disturbed secondary forest in the central highlands.

Distribution. The species Uduba volana is known only from the type locality in Antananarivo Province, in central Madagascar ( Maps 5 , 16.).

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 77. Uduba spp., female genitalia drawings. A–C. U. goodmani, new species. A, B. Paratype female (CASENT9009538) from montane rainforest at 900m elevation at Col du Sedro in Parc National d’Andohahela. C. Holotype (CASENT9006074) from camp #5 at 1875m elevation in Réserve Naturelle Intégrale d’Andohahela. D–F. U. volana, new species, holotype (CASENT9006072) dug from a burrow at 1400m elevation at Ambohimanga. A, C, D, E. Epigynum, ventral. B, F. Vulva, dorsal. Illustrations C–D by Jenny Speckels, A–B, E–F by Charles Griswold. 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; HS, head of spermatheca of vulva, including spermathecal poreplate; LL, lateral lobe of epigynum; LP, lateral process of epigynum; ML, median lobe of epigynum. 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.