Nerudia nono, Huber & Meng & Král & Ávila Herrera & Izquierdo & Carvalho, 2023

Huber, Bernhard A., Meng, Guanliang, Král, Jiří, Ávila Herrera, Ivalú M., Izquierdo, Matias A. & Carvalho, Leonardo S., 2023, High and dry: integrative taxonomy of the Andean spider genus Nerudia (Araneae: Pholcidae), Zoological Journal of the Linnean Society 198, pp. 534-591 : 570-573

publication ID	https://doi.org/ 10.1093/zoolinnean/zlac100
publication LSID	lsid:zoobank.org:pub:E3CF73A6-FCA6-4935-A516-D1E38E49CFB3
DOI	https://doi.org/10.5281/zenodo.7981826
persistent identifier	https://treatment.plazi.org/id/2366961A-A513-FF9D-FC0D-6BD25BD16BA6
treatment provided by	Plazi
scientific name	Nerudia nono
status	SP. NOV.

Treatment

NERUDIA NONO HUBER SP. NOV.

( FIGS 1H View Figure 1 , 31 View Figure 31 , 32 View Figure 32 )

Z o o b a n k r e g i s t r a t i o n: u r n: l s i d: z o o b a n k. o r g: a c t: D 3 1 A 8 1 F 7 - 8 F 7 F - 4 D C A - B E 7 E - 6EEAFFE52FBF.

Diagnosis: Distinguished from known congeners by shapes of procursus ( Fig. 31A–C View Figure 31 ; wide in lateral view, narrow in dorsal view, with small prolateral flap distally) and by armature of male chelicerae ( Fig. 31G, H View Figure 31 ; frontal apophyses directed towards frontal, with pointed tips), from some congeners also by bulbal processes ( Fig. 31D–F View Figure 31 ; ventral apophysis distally slender, curved towards ventral, slightly longer than embolus), and by epigynum and female internal genitalia ( Figs 31I View Figure 31 , 32 View Figure 32 ; main epigynal plate semi-circular, with almost straight posterior margin; internal genitalia with indistinct semi-circular receptacle).

Type material: ARGENTINA – Córdoba: • ♂ holotype; ~ 5 km E Nono ; 31.7982° S, 64.9515° W; 995 m a.s.l.; 20 Feb. 2021; M. Izquierdo, F. Cargnelutti, F. Bollatti & G. Boaglio leg.; LABRE-Ar 592 GoogleMaps • 3 ♂♂, paratypes; same data as holotype; LABRE AR525 GoogleMaps • 1 ♂, paratype; same data as holotype; ZFMK Ar 23909 GoogleMaps • 1 ♀, paratype; same data as holotype; LABRE AR534 GoogleMaps • 3 ♀♀, paratypes; same locality as holotype; 2 Mar 2019; B.A. Huber & M.A. Izquierdo leg.; ZFMK Ar 23910 GoogleMaps .

Other material examined: ARGENTINA – Córdoba: • 5 ♀♀, 7 juvs, in pure ethanol; same locality as holotype; 2 Mar 2019; B.A. Huber & M.A. Izquierdo leg.; ZFMK Arg 124 GoogleMaps • 1 ♂, 1 ♀; same locality as holotype; 5 Jan. 2022; M. Izquierdo, F. Cargnelutti, G. Boaglio leg.; LABRE-Ar 593 GoogleMaps • 6 ♀♀; same data as preceding; LABRE-Ar 595 GoogleMaps • 2 ♂♂, 1 ♀, 1 juv.; same locality as holotype; 20 Feb. 2021; M. Izquierdo, F. Cargnelutti, F. Bollatti, G. Boaglio, leg.; LABRE-Ar 594 GoogleMaps • 2 ♂♂, in Karnovsky (MAI-4780); same data as preceding, LABRE-Ar 568 GoogleMaps • 1 ♂, in Karnovsky (MAI-4771); same data as preceding; LABRE-Ar 569 GoogleMaps • 6 ♀♀, in Karnovsky (MAI-4781); same data as preceding; LABRE-Ar 570 GoogleMaps .

Etymology: The species epithet is derived from the type locality Nono in Córdoba, Argentina; noun in apposition.

Description

Male (holotype. Measurements: Total body length 1.70, carapace width 0.70. Distance PME-PME 90 µm; diameter PME 60 µm; distance PME–ALE 35 µm; distance AME–AME 20 µm; diameter AME 50 µm. Leg 1: 5.20 (1.40 + 0.25 + 1.40 + 1.55 + 0.60), tibia 2: 1.15, tibia 3: 0.95, tibia 4: 1.40; tibia 1 L/d: 20.

Colour (in ethanol): Prosoma and legs mostly pale ochre-grey; carapace with large median brown mark including ocular area, not reaching posterior margin of carapace; sternum whitish; legs without dark rings; abdomen monochromous greenish-grey.

Body: Habitus as in Figure 1H View Figure 1 . Ocular area barely raised. Carapace with indistinct thoracic groove. Clypeus more sclerotized than in female and slightly bulging. Sternum wider than long (0.50/0.40), with pair of distinct anterior processes near coxae 1. Abdomen globular.

Chelicerae: As in Figure 31G, H View Figure 31 ; pair of frontal apophyses directed forward, with flattened tips; stridulatory files on pair of lateral protrusions, ridges barely visible in dissecting microscope.

Palps: In general, similar to N. colina (cf. Fig. 4 View Figure 4 ); coxa unmodified; trochanter with indistinct ventral projection; femur cylindrical, only slightly widened distally, proximally with indistinct retrolateral hump and prolateral stridulatory pick (modified hair); patella short, dorsally more bulging than in N. colina ; tibia globular; procursus wide in lateral view, narrow in dorsal view, distally with small apophysis and prolateral flap ( Fig. 31A–C View Figure 31 ); genital bulb with ventral apophysis distally slender, curved towards ventral, embolus partly membranous ( Fig. 31D–F View Figure 31 ).

Legs: Without spines and curved hairs; few vertical hairs; retrolateral trichobothrium of tibia 1 at 59%; prolateral trichobothrium absent on tibia 1; tarsus 1 with seven to eight pseudosegments, mostly distinct.

Variation (male): Tibia 1 in five males (including holotype): 1.35–1.40 (mean 1.37).

Female: In general, similar to male but sternum without pair of anterior humps, chelicerae apparently without stridulatory ridges, and clypeus unmodified. Tibia 1 in nine females: 1.30–1.45 (mean 1.36). Epigynum ( Fig. 32A View Figure 32 ) anterior plate weakly protruding, semi-circular, with almost straight posterior margin; posterior plate large, simple. Internal genitalia ( Figs 31I View Figure 31 , 32B–D View Figure 32 ) with indistinct semi-circular receptacle.

Distribution: Known from type locality only, near Nono in Córdoba, Argentina ( Fig. 3 View Figure 3 ).

Natural history: The spiders were found among the stones of a loosely built stone wall in the plain sun in a relatively arid environment ( Fig. 45F View Figure 45 ). In small containers in laboratory conditions, the spiders built flimsy webs. Like other pholcids, they hang upside down in these webs. Copulation attempts were not successful. In one of them (25 Feb. 2021), the female attacked the male and started to wrap him.