Vytfutia halandrefana Griswold, 2022

Griswold, Charles E., 2022, The Lace Web Spider Genus Vytfutia Deeleman-Reinhold (Araneae, Phyxelididae) in the Indo-Pacific Region, Proceedings of the California Academy of Sciences 67 (14), pp. 329-355 : 337

publication ID

https://doi.org/ 10.5281/zenodo.11513175

DOI

https://doi.org/10.5281/zenodo.11513027

persistent identifier

https://treatment.plazi.org/id/03B48798-4B60-FFB2-293F-90B9E331F479

treatment provided by

Felipe

scientific name

Vytfutia halandrefana Griswold
status

sp. nov.

Vytfutia halandrefana Griswold View in CoL , new species

Figures 20–25 View FIGURES View FIGURES , 50–55 View FIGURES , 62 View FIGURE

Types: Holotype female ( CASENT9012513 ) from gallery forest along the Mandraré River in the Forêt de Bealoka , Réserve Privé Berenty, Toliara Provence, Madagascar, (24°57ʹ25ʺS, 46°16ʹ17ʺE, elev. 34m), collected 3–8 February 2002 by the Fisher-Griswold Arthropod Survey Team, collection code BLF5320, deposited in CAS GoogleMaps . Paratype female ( CASENT9008848 ) from tropical dry forest at Tombeau Vazimba , Bekopaka , Parc National Tsingy de Bemaraha, Toliara Provence, Madagascar, (19°8ʹ31ʺS, 44°49ʹ41ʺE, elev. 50m), collected 6–10 November 2001 by the Fisher-Griswold Arthropod Survey Team, collection code BLF4230, deposited in CAS GoogleMaps .

Etymology: The specific name is from the Malagasy words for spider, hala, and west, andrefana, commemorating the distribution of this westernmost Vytfutia species; a noun in apposition.

Diagnosis: Females with epigynum ( Figs. 23-25 View FIGURES View FIGURES ) broad, quadrangle greater than 2.50, copulatory opening rims transverse, posterior margin of epigynum concave, vulva complex with large anterior lobe and slender ducts, vulva width less than 1.50 times length ( Fig. 25 View FIGURES ); thoracic fovea oval, length less than 0.08 carapace length ( Fig. 20 View FIGURES ); smallest Vytfutia , total length of females 2.12–2.42; male unknown.

Male: Unknown. Female (holotype, CASENT9021513): Total length 2.12. Markings as in Figs. 20, 21 View FIGURES , carapace and chelicerae dark brown, labium and palpal coxae yellow-brown, venter and legs yellow-white; abdomen grey-white with dorsal brown cardiac marks broken into anterior and median parts, dorsum and sides with intermixed, scattered brown spots and white guanine deposits, venter plain yellow white. Carapace 0.95 long, 0.80 wide, 0.36 high; clypeus 0.04 high, height 0.80 AM diameter; ocular area 0.18 long, 0.46 wide, OAL 1.07 times OQL; ratio of eyes AM:AL: PM: PL, 1.00:1.11:1.11:1.22, diameter of PM 0.06; AM-AM 0.89 AM diameter, AM-AL 1.22 AM; PM-PM and PM-PL 1.60 PM; AL-PL 0.18 times PL. Chelicerae 0.41 long; sternum 0.56 long, 0.50 wide; labium 0.18 long, 0.21 wide; palpal coxae 0.27 long, 0.15 wide. Femur I length 1.01 times carapace width. Spination greatly reduced compared to other Vytfutia species: Female: palp: femur d0-1-0, tibia d1-0-2, p0-0-1, tarsus p0-1-1, v1-1-2-2-1; leg I: femur d0-1-1-0, p0-0-0-1, tibia r0-1-1-0, metatarsus v2-0-0; leg II: femur d1-1-0, p0-0-1, tibia p1-1-0-2, r0-1-0, metatarsus v2-0-0-0; leg III: femur d10-0-0; leg IV: femur d10-0-0. Leg measurements: I: 0.81 + 0.34 + 0.72 + 0.62 + 0.56 = [3.05]; II: 0.75 + 0.31 + 0.56 + 0.50 + 0.31 = [2.43]; III: 0.72 + 0.28 + 0.44 + 0.47 + 0.31 = [2.22]; IV: 0.81 + 0.34 + 0.59 + 0.56 + 0.28 = [2.58]; palp: 0.37 + 0.12 + 0.19 + na + 0.31 = [0.99]. Calamistrum as in Figs. 22 View FIGURES , 50, 51 View FIGURES ; palpal femur thorns as in Figs. 53, 54 View FIGURES ; tarsal claws IV as in Figs. 52, 55 View FIGURES . Epigynum as in Figs. 23 View FIGURES , 24 View FIGURES , vulva as in Fig. 25 View FIGURES . Variation (N=2): Total length 2.12–2.42; carapace length 1.19–1.25 times width, height 0.45–0.56 width; PER 1.12–1.13 times AER, 2.50–2.81 times OAL; OAL 1.04–1.07 times OQL; clypeal height 0.60–0.80 times AM diameter; cheliceral length 10.80–14.00 times clypeal height; sternum length 1.19–1.26 times width.

Natural History: Collection records from beating and pitfall trapping suggest that this species occurs on vegetation and on the ground in gallery forest and tropical dry forest.

Distribution: Known from central and western Toliara Province, Madagascar ( Fig. 62 View FIGURE ).

Material Examined: MADAGASCAR: Toliara Prov., Réserve Privé Berenty, Forêt de Bealoka, Mandraré River , 14.6 km 329° NNW Amboasary, elev. 35 m, 24°57ʹ25ʺS, 46°16ʹ17ʺE, beating low vegetation - gallery Forest , 3–8 February 2002, Fisher-Griswold Arthropod Survey Team, collection code BLF5320 (Holotype Female CASENT9021513 ) GoogleMaps , same data (Female CASENT9012420 ) GoogleMaps ; Parc National Tsingy de Bemaraha, 3.4 km 93° E Bekopaka, Tombeau Vazimba , 19°8ʹ31ʺS, 44°49ʹ41ʺE, elev. 50m, pitfall trap in tropical dry forest, 6-10 November 2001, Fisher-Griswold Arthropod Survey Team, collection code 4230 (Paratype female, CASENT9008848 ) GoogleMaps .

CAS

California Academy of Sciences

AM

Australian Museum

PM

Pratt Museum

PL

Západoceské muzeum v Plzni

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Phyxelididae

Genus

Vytfutia

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