Vytfutia pallens Deeleman-Reinhold, 1989

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 : 339-340

publication ID

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

DOI

https://doi.org/10.5281/zenodo.12692113

persistent identifier

https://treatment.plazi.org/id/03B48798-4B62-FFB0-293F-927FE663F4FF

treatment provided by

Felipe

scientific name

Vytfutia pallens Deeleman-Reinhold, 1989
status

 

Vytfutia pallens Deeleman-Reinhold, 1989 View in CoL

Figures 45–49 View FIGURES , 60–62 View FIGURES View FIGURE

Vytfutia pallens Deeleman-Reinhold, 1989 View in CoL : ♂ M ♀ F paratypes from Niah Cave , Sarawak, Malaysia, 10 April 1984, C. Deeleman and C. Hug, RMNH, examined. Griswold et al., 2005: 90.

Diagnosis: Males with palpal tibia with elongate apical spine ( Figs. 46, 47 View FIGURES ), embolus short, straight, arises on prolateral side of bulb (near 8 o’clock), median apophysis hooked at apex ( Figs. 45, 46 View FIGURES ); females with epigynum with copulatory opening rims oblique, diverging anteriorly, posterior margin straight to slightly convex ( Fig. 48 View FIGURES ), vulva simple, with paired lobes of spermathecae extending far anteriad of copulatory openings ( Fig. 49 View FIGURES ); largest Vytfutia (see Figs. 60, 61 View FIGURES ), total length of males 4.40–5.00, of females 6.20–7.70; markings pale; legs long, male metatarsus I with base of concavity at more than 0.45 metatarsus length, spur high, height greater than 0.09 metatarsus length ( Figs. 60, 61 View FIGURES ).

Male (paratype, after Deeleman-Reinhold, 1989: 622-623): Total length 4.40. Carapace light grey-brown, ocular area slightly darker; chelicerae dark brown; labium, palpal coxae, sternum, and legs light grey-brown; abdomen pale with 3 snowy granulations on dorsal surface. Carapace 2.20 long, 1.70 wide; carapace length 1.29 times width; PER 1.14 times AER, PER 2.28 times OAL; OAL 0.57 times OQL; OQA 0.625 times OQP; ratio of eyes AM:AL: PM: PL, 1.0:2.0:3.0:3.0; AM-AM, AM-AL equal to AM diameter; PM-PM, PM-PL equal to PM diameter; AL touching PL. Sternum length 1.26 times width; labium length 0.75 times width; palpal coxae length 2.0 times width. Legs with typical spination; femur I length 1.25 times carapace width; metatarsus I as in Figs. 60, 61 View FIGURES , clasping spine extends beyond median spur, spur long, length nearly ½ segment width. Leg measurements: I: 2.3 + 0.9 + 2.2 + 1.9 + 1.2 = [8.5]; II: 2.1 + 0.7 + 1.8 + 1.8 + 1.0 = [7.4]; III: 2.1 + 0.8 + 1.5 + 1.7 + 0.9 = [7.0]; IV: 2.3 + 0.9 + 1.9 + 1.9 + 1.0 = [8.0]; palp: 1.2 + 0.4 + 0.6 + NA + 0.6 = [2.8]; leg formula 1423. Male palp as in Figs. 45–47 View FIGURES ; tibia length 1.21 times cymbial length, RTA length 0.23 times tibia ( Figs. 46, 47 View FIGURES ), MA origin 0.36 distance to tegular base, MA length 0.83 times that of tegulum, MA length 7.86 times width ( Figs. 45, 46 View FIGURES ). Variation (N=3): Total length 4.40 to 5.00. Female (Paratype, after Deeleman-Reinhold, 1989: 622-623): Total length 6.70. Markings as in male. Carapace 3.30 long, 2.30 wide, carapace length 1.43 times width, carapace height 0.47 width; PER 1.11 times AER, PER 2.50 times OAL; OAL equals OQL; OQA 0.59 times OQP; clypeal height 1.25 times AM diameter; ratio of eyes AM:AL: PM: PL, 1.0:1.6:1.6:1.2; AM-AM 0.6 times AM diameter, AM-AL equals AM diameter; PM-PM 1.125 times PM diameter, PM-PL 1.25 times PM, AL touching PL. Chelicerae 1.30 long; cheliceral length 12.0 times clypeal height; sternum length 1.34 times width; labium length 1.09 times width; palpal coxae length 1.75 times width. Legs with typical spination. Femur I 1.26 times carapace width. Leg measurements: I: 2.9 + 1.2 + 2.5 + 2.4 + 1.3 = [10.30]; II: 2.7 + 1.1 + 2.2 + 2.0 + 1.0 = [9.00]; III: 2.4 + 1.0 + 1.7 + 1.7 + 1.0 = [7.80]; IV: 2.7 + 1.1 + 1.9 + 1.9 + 1.0 = [8.60]; palp: 1.1 + 0.25 + 0.70 + NA + 1.0 = [3.05], leg formula 1243. Female genitalia as in Fig. 48 View FIGURES (epigynum) and Fig. 49 View FIGURES (vulva). Epigynum width 2.66 times length; epigynum MLW 2.20 times MLL, MLW 1.50 times LLW. Variation (N=12): Total length 6.20 to 7.70.

Natural History: Deeleman-Reinhold (1989: 619, 620, 624) describes this species from Niah Cave, Sarawak, Malaysia, a cave famous for the diversity of endemic species.

Distribution: Known only from the type locality ( Fig. 62 View FIGURE ).

Material Examined: Only the paratypes from Niah Cave , Sarawak, in RMNH .

RMNH

National Museum of Natural History, Naturalis

AM

Australian Museum

PM

Pratt Museum

PL

Západoceské muzeum v Plzni

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Phyxelididae

Genus

Vytfutia

Loc

Vytfutia pallens Deeleman-Reinhold, 1989

Griswold, Charles E. 2022
2022
Loc

Vytfutia pallens

Deeleman-Reinhold 1989
1989
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