Pseudonemesia tabiskey, Rafael Prezzi Indicatti & Osvaldo Villarreal M., 2016

Rafael Prezzi Indicatti & Osvaldo Villarreal M., 2016, Pseudonemesia tabiskey, a new species of Pseudonemesia Caporiacco 1955 and new ultramorphological data for the Microstigmatinae (Araneae: Microstigmatidae), Journal of Natural History 50 (33), pp. 2153-2167 : 3-13

publication ID	https://doi.org/ 10.1080/00222933.2016.1196297
DOI	https://doi.org/10.5281/zenodo.6058682
persistent identifier	https://treatment.plazi.org/id/039D87D1-3C58-5810-71E8-F7B6FB9DFBD2
treatment provided by	Plazi
scientific name	Pseudonemesia tabiskey
status	sp. nov.

Treatment

Pseudonemesia tabiskey View in CoL sp. nov.

( Figures 1 – 10 View Figure 1 View Figure 2 View Figure 3 View Figure 4 View Figure 5 View Figure 6 View Figure 7 View Figure 8 View Figure 9 View Figure 10 , 12)

Type material

Male holotype ( MHNLS II – 490) from La Cristalina, near Boconó, Trujillo, Venezuela, 9° 21'21 “ N, 70°19'35 “ W, 2510 m above sea level (asl), December 2006 GoogleMaps – March 2007, O.

Villarreal M., P. Delfín, N. Mendoza and J. Gil coll. GoogleMaps Paratypes with the same data as holotype, female and male ( MHNLS II – 491); one male ( IBSP 115437 View Materials ). GoogleMaps

Etymology

Tabiskey means ‘ the man with ten feathers ’. It is a Cuica term to describe the leader of the people, who guided them in peace or war and had the principal rule in important decisions. He was selected from among the priest ’ s sons.

Diagnosis

Pseudonemesia tabiskey sp. nov. differs from P. parva and P. kochalkai by the clavate setae on dorsal and lateral sides of the abdomen ( Figures 6 View Figure 6 (a,b), 7(a,b), 9(b,c)). In addition, males of Pseudonemesia tabiskey sp. nov. differ from the other two species of the genus by the presence of one short and apically rounded spine located retrolaterally on tibia I ( Figures 1 View Figure 1 (g,h), 3(a – c), 6(f)).

Description

Male (holotype). Carapace light brown with three longitudinal dark brown bands, one on each lateral side for length and one central only from eye tubercle to fovea ( Figure 6 View Figure 6 (a)); legs yellowish dark with one subapical light brown mottles on femur I – II; femur III – IV with two, one sub-basal and one sub-apical; one basal light brown mottles on tibia, metatarsi and tarsi I – IV ( Figure 6 View Figure 6 (a)). Cephalic and thoracic region with equal heights and more raised than eye tubercle. Abdomen dorsally dark brown ( Figure 6 View Figure 6 (a,b)) and ventrally light yellow. Anterior and posterior book-lung apertures very small and rounded ( Figures 6 View Figure 6 (c), 9(a)). Scaly cuticle flattened and highest at their distal ends on dorsal and lateral segments of all legs and palp ( Figures 2 View Figure 2 (c – f), 3(a,b,d), 6(a,f)). Total length 2.73. Carapace 1.35 long, 1.20 wide. Abdomen 1.20 long, 0.73 wide. Fovea very narrow 0.12 and recurved ( Figure 6 View Figure 6 (a)). Clypeus narrow, 0.05. Anterior eye row straight and posterior recurved ( Figure 6 View Figure 6 (a)). Eye sizes: AME 0.11, ALE 0.08, PME 0.05 and PLE 0.07. Overall shape of eye group trapezoidal, wider than long. Chelicerae with nine teeth in one row on promargin, with ca. 15 basal smaller teeth. Rastellum absent ( Figures 6 View Figure 6 (d), 8(a)). Cheliceral tumescence absent. Labium 0.13 long, 0.27 wide, without cuspule ( Figure 6 View Figure 6 (d)). Cuspule on maxillae absent ( Figures 6 View Figure 6 (d), 8(b)). Modified comb-shaped setae on prolateral maxillary border ( Figure 8 View Figure 8 (b,d)). Serrula poorly developed with widely separated teeth and greatly flattened ( Figure 8 View Figure 8 (c)). Sternum rounded 0.50 long, 0.70 wide ( Figure 6 View Figure 6 (d)), domed. Sternal sigilla inconspicuous ( Figure 6 View Figure 6 (d)). Palp measurements: femur 0.75/patella 0.50/tibia 0.52/cymbium 0.45/total 2.22; spination: femur d0-1-1-1-1-1-1, v0-1r-1r-2-2, tibia d0-1-0-0-0, v1 p-0-1r-2-1p-1-2, cymbium d2ap, p0-0- 0-1-0-0 ( Figure 2 View Figure 2 (d – f)). Leg measurements: I: femur 1.20/patella 0.72/tibia 0.75/metatarsus 0.70/tarsus 0.40/total 3.77; II: 1.00/0.60/0.72/0.60/0.40/3.32; III: 0.90/0.50/0.55/0.82/0.50/3.27; IV: 1.27/0.60/1.12/1.30/0.54/4.83; spination: I: femur d0-1-1-1-1-1-1-0, v0-0-0-0-1r-0-1r, tibia v0-1r-1r-(1 = clasping spine, Figures 1 View Figure 1 (g,h), 6(f)) -1p-0, metatarsus v2 ap; II: femur d0-1-1-1-1- 1-1, v1 p-1p-0-2-0-2, tibia v0-1r-0-1r-0-2ap, metatarsus v0-1r-1p-1r-0-2ap; III: femur d1-2-1- 1p-1-1r-1-2-0, v1 p-1p-2-1p-2, p1ap, patella d1-0-0, p0-0-1-0, r0-1-0, tibia d2-0-0-1-0, v0-1p- 1r-0-3ap, p0-1-0, metatarsus d0-0-1p-1r-1-1-1r-1p-0, v0-1r-0-2-0-0-3ap; IV: femur d0-1-1-0-1- 1-2-1, patella p0-1-0, r0-1-0, tibia d1r-1-0-0-1-0-1-0, v0-1p-0-1r-0-3ap, p0-1-0-0-0-1-0, r0-0-1- 0-0-0-1-0, metatarsus d0-1-0-0-0-1p-1r-1-1r-1p, v0-1r-1p-0-1r-0-3ap. Abdomen with four longitudinal erect clavate setal bands: two on dorsum with eight setae on each and one on each lateral with nine setae (two anterior longer). Clavate setae with sclerotized insertions on a mound ( Figures 6 View Figure 6 (b), 9(b)). Abdomen with anterior shiny brown scutum ( Figure 6 View Figure 6 (b)). Tarsi I – IV not flexible. Scopulae absent on all tarsi ( Figures 3 View Figure 3 (a), 4(a)). STC with two rows of 5 – 6 teeth on tarsi I; 4 – 5 on tarsi II, 1, 3; 5, 3 on tarsi III and 3, 4; 5, 2 on tarsi IV. ITC well developed on all legs ( Figure 4 View Figure 4 (a,b)). Tarsal organ rounded, elevated with 4 – 5 concentric ridges ( Figure 5 View Figure 5 (a,b)). Trichobothrial bases corrugated, rounded and elevated ( Figure 5 View Figure 5 (c,d)). Four spinnerets: two PMS vestigial entire 0.05 long, without spigots ( Figures 6 View Figure 6 (e), 9(f)) and two PLS: basal, median and apical (domed) segments 0.09, 0.08, 0.06 long, respectively ( Figures 6 View Figure 6 (e), 9(d)). PLS with one spigot on apex of medial article and five on apical ( Figure 9 View Figure 9 (d,e)). Palpal tibia excavation and tegulum ( Figure 2 View Figure 2 (a,b)) with low grooves. Palpal bulb oval with very short, blunt embolus, curved to ventral side ( Figures 1 View Figure 1 (a – e), 2(a,b)).

Female (paratype MHNLS II–491). Coloration, book-lung apertures and cuticle as in male. Total length 4.00. Carapace 1.58 long, 1.36 wide. Abdomen 2.10 long, 0.86 wide. Fovea very narrow 0.16 and recurved. Clypeus narrow, 0.06. Anterior eye row straight and posterior recurved. Eye sizes: AME 0.06, ALE 0.09, PME 0.05 and PLE 0.08. Overall shape of eye group trapezoidal, wider than long. Chelicerae with nine teeth in one row on promargin, with 16 basal smaller teeth. Rastellum absent. Labium 0.13 long, 0.35 wide, without cuspule. Cuspule on maxillae absent. Serrula as in male. Sternum rounded 0.74 long, 0.70 wide, domed. Sternal sigilla inconspicuous. Palp measurements: femur 0.82/patella 0.64/tibia 0.60/tarsi 0.72/total 2.78; spination: femur d0-1-0-1-1-1-1, v0-0-0- 1r-0-2, tibia v1 p-0-2-0-2ap, tarsus p0-1-0. Leg measurements: I: femur 1.10/patella 0.70/ tibia 0.72/metatarsus 0.64/tarsus 0.45/total 3.61; II: 1.02/0.70/0.66/0.64/0.46/3.48; III: 0.86/ 0.52/0.62/0.80/0.50/3.30; IV: 1.40/0.72/1.14/1.48/0.62/5.36; spination: I: femur d0-1-1-1-0- 1-1-1-1-1, v0-0-0-1r-0-0-1r, tibia v0-1r-0-1r-0-0, metatarsus v0-1r-1r-0-2ap; II: femur d0-1- 1-1-1-1-1, v0-0-0-1r-0, tibia v0-1r-0-1r-0-3ap, metatarsus v0-1r-0-1r-0-0-2ap; III: femur d0- 1-0-1-1-1, v1 p-1p-0-1p-0-0, patella d1-1-0, r0-1-0, tibia d2-0-0-1-0, v0-1p-1r-0-0-3ap, p0- 1-0, metatarsus d0-0-2-0-0-1r-2, v0-1r-0-0-2-0-0-3ap; IV: femur d0-1-0-0-1-1-1-1r-1, v0-0- 0-1p-0, patella d1-0-0-0-0, p0-1-0, r0-1-0, tibia d1r-1p-0-0-0-1-1-0, v0-1p-0-0-1r-0-0-0-3ap, p0-1-0-0-0-1-0-0, r0-1-0-0-0-1-0, metatarsus d0-1-1r-0-0-1p-0-1r-0-1p-0-2-0, v0-1-1p-0-2- 1-0-0-3ap. Clavate setae and scutum on abdomen as in male. Palp with one row with nine prolateral teeth. Tarsi I – IV not flexible. Scopulae absent on all tarsi. STC with two rows of 9 – 10 teeth on tarsi I; 6 – 7 on tarsi II, 3 – 4 on tarsi III and 1, 5; 5, 3 on tarsi IV. ITC well developed on all legs. Trichobothria and tarsal organ as in male. Four spinnerets: two PMS vestigial entire 0.06 long, without spigots ( Figure 7 View Figure 7 (a,b)) and two PLS: basal, median and apical (domed) segments 0.15, 0.12, 0.07 long, respectively ( Figure 7 View Figure 7 (a,b)). Two bifid spermathecae ( Figure 1 View Figure 1 (f)).

Variation

Males (n = 4): total length 2.73 – 4.85; carapace 1.35 – 1.50; abdomen 1.20 – 1.35. The height of pars thoracica can range from slightly more elevated than pars cephalica (almost equal height) to more elevated, as in Raven and Platnick (1981, fig. 51).

Additional material examined

Only one male used on SEM with the same data as holotype ( IBSP 115438 View Materials ). GoogleMaps

Habitat

The specimens were collected using pitfall traps. The containers were partially filled with a saturated saltwater solution, left in place for 5 – 7 days at 2500 m asl. All specimens came from a transitional forest between Andean rainforest (1800 m asl) and the paramo vegetation (> 2700 m asl) ( Figure 10 View Figure 10 (a,b)). The average temperature was about 15 – 17°C and the annual rainfall, measured nearby, was> 900 mm. Other mygalomorph spiders collected in this area were Linothele sp. (Dipluridae) and Bolostromus sp. (Cyrtaucheniidae).

Distribution

Known only from the type locality, in Venezuelan Andes: Trujillo state ( Figure 12 View Figure 12 ).