Nyetnops madre Villarreal & Martínez, 2024

Villarreal-Blanco, Eduardo, Martínez, Leonel & Eyes-Escalante, Melisa, 2024, Update in the Peruvian Caponiidae: New records and new species of Nyetnops Platnick & Lise, 2007 (Araneae: Caponiidae), European Journal of Taxonomy 932, pp. 204-224 : 214-218

publication ID

https://doi.org/ 10.5852/ejt.2024.932.2523

publication LSID

lsid:zoobank.org:pub:8049A322-2716-4E9D-A8B7-BF3B5DE82ADC

DOI

https://doi.org/10.5281/zenodo.11145153

persistent identifier

https://treatment.plazi.org/id/C071D04C-765D-FFF6-FDD8-FD333A06FE4F

treatment provided by

Plazi

scientific name

Nyetnops madre Villarreal & Martínez
status

sp. nov.

Nyetnops madre Villarreal & Martínez sp. nov.

urn:lsid:zoobank.org:act:F8AC2BFB-9BA7-469C-9EF9-8C6A6D3F727D

Figs 6–8 View Fig View Fig View Fig , 11–12 View Fig View Fig

Diagnosis

Males of Nyetnops madre Villarreal & Martínez sp. nov. resemble those of N. lachonta and N. buruti by having a copulatory bulb (tegulum+embolus), more than 2.2 × as long as palpal tibia but differ from those of N. buruti and N. lachonta by having the tegulum basal section of almost the same width as the distal section across the entire length of the bulb ( Fig. 7A–B View Fig ), instead of a distinctly narrower basal section as in N. buruti and the narrowing in the anterior section of the tegulum apical section in N. lachonta ; additionally, the males of this species have an embolar subapical dorsal and ventral serrated keel unique in the genus. Females are similar to those of N. guarani by having the posterior plate wide and a triangular distal margin of the receptaculum but can be distinguished by the less sharp dorsal margin of the receptaculum ( Fig. 7C–D View Fig ).

Etymology

The specific epithet is a noun in apposition taken from the type locality Madre de Dios.

Type material

Holotype PERU • ♂; Madre de Dios department, Boca Río Los Amigos, CICRA ; 12°34′9″ S, 70°6′0.40″ W; alt. 270 m; 9–13 Jun. 2010; H. Silva leg.; MUSM – ENT 0503213 . GoogleMaps

Paratypes PERU • 1 ♀; same collection data as for holotype; MUSM – ENT 0503206 GoogleMaps 1 ♂; same collection data as for holotype; MUSM – ENT 0515831 GoogleMaps 2 ♂♂; same collection data as for holotype; MUSM – ENT 0515830 GoogleMaps 1 ♂; same collection data as for holotype; 14 Jun. 2010; M. Vicchez leg.; MUSM – ENT 0503223 GoogleMaps .

Other material

PERU • 1 ♂; Cusco department, Río Camisea, Pagoreni ; 11°42′22.5″ S, 72°54′10.7″ W; alt. 465 m; 7–28 May 1998; S. Cordova leg.; MUSM – ENT 0506898 GoogleMaps 1 ♂; same collection data as for preceding; 7–29 May 1998; S. Cordova et al. leg.; MUSM – ENT 0515832 GoogleMaps .

Description

Male (holotype, MUSM–ENT 0503213)

COLORATION ( Fig. 6A–B, E, G View Fig ). Carapace orange. Chelicerae, endites, labium, and sternum light orange. Legs light orange. Abdomen: dorsally dark gray, without noticeable pattern ( Fig. 6A View Fig ). Ventrally gray yellowish, darker on epiandric area. Spinnerets beige. Anterior legs without arolium, crista or gladius.

MEASUREMENTS. Total length 3.51; carapace length 1.54; width 1.30; height 0.68. Clypeus height 0.31. Eye diameters and interdistances: PME 0.17; PME–PME 0.39. Chelicerae length 0.47. Sternum length 0.98; width 0.85. Legs: I: 5.21; II: 4.70; III: 4.29; IV: 6.37. Abdomen length 1.95.

GENITALIA. Very elongated copulatory bulb, tegulum basal section slightly swollen and almost as width as apical section, tegulum surface smooth, embolus surface with sparse longitudinal grooves, embolus with dorsal and ventral dentated keel and tip with very long projections, dorsally petal-like and ventrally rooster-like ( Figs 7A–B View Fig , 8A–F View Fig ).

Female (paratype, MUSM–ENT 0503206)

COLORATION AND ABDOMINAL PATTERN. As male, but with lighter color tones ( Fig. 6C–D, F, H View Fig ).

MEASUREMENTS. Total length 5.08, carapace length 1.65, width 1.50, height 0.44. Clypeus height 0.33. Eye diameters and interdistances: PME 0.16, PME–PME 0.38. Chelicerae length 0.51. Sternum length 1.16, width 1.05. Legs: I: 6.20; II: 5.76; III: 5.37; IV: 7.55. Abdomen length 3.24.

GENITALIA. External genital area with weakly sclerotized anterior plate, lep and ess, posterior plate narrow ( Fig. 7C View Fig ). Internal genitalia with triangular margin of receptaculum, posterior plate well developed ( Fig. 7D View Fig ).

Variation

Males (n=3): total length: 3.51–3.96; carapace length: 1.49–1.83.

Distribution

Widespread distribution is known from one locality in Madre de Dios and Cusco departments each ( Figs 11–12 View Fig View Fig ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Caponiidae

Genus

Nyetnops

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