Neostasina toronegro, Rheims & Alayón, 2022

Rheims, Cristina A. & Alayón, Giraldo, 2022, Additions to the genus Neostasina Rheims & Alayón (Araneae: Sparassidae: Sparianthinae), European Journal of Taxonomy 821, pp. 166-199 : 192-194

Neostasina toronegro sp. nov.

urn:lsid:zoobank.org:act:0D89FBF3-111E-4C5E-944F-D979DF350B56

Figs 15−16 , 21

Diagnosis

Females of N. toronegro sp. nov. resemble those of N. juanita sp. nov. and N. taino ( Rheims & Alayón 2016: figs 140−142) by the subpentagonal shape of the MS. They are distinguished from the latter species by the ar evenly curved ( Fig. 16A ) (medially angled in the other species). Males are unknown.

Etymology

The specific name refers to the type locality; noun in apposition.

Material examined

Holotype PUERTO RICO • 1 ♀; Orocovis; Toro Negro State Forest [18.1667, 66.4833]; 29 Aug. 1967; MCZ 30719 .

Description

Female (holotype)

COLOR. Prosoma orange brown; cephalic region with faint lines extending posteriorly from PME and medially towards fovea; thoracic region with faint brown roughly dashed lines extending from fovea to lateral margins; fovea brown; eye borders black. Legs pale brownish orange, ventrally mottled with brown dots. Palps pale brownish orange. Labium brown, distally lighter brown. Endites brownish orange, distally pale brownish yellow. Sternum brownish orange with pale brown margins. Opisthosoma yellowish cream colored; dorsally with brown pattern of irregular marks laterally and on anterior half and four incomplete chevrons down posterior half. Spinnerets pale brownish yellow ( Fig. 15 A−B).

MEASUREMENTS. Total length 9.0, prosoma length 3.9, width 3.2, opisthosoma length 5.0, width 3.2. Eye diameters: 0.23, 0.18, 0.13, 0.19; interdistances: 0.25, 0.18, 0.40, 0.38. Legs (2143): I: 12.1 (3.5, 1.8, 3.2, 2.8, 0.8); II: 12.4 (3.8, 1.9, 3.1, 2.8, 0.8); III: 9.2 (3.1, 1.6, 2.2, 2.3, 0.7); IV: 11.8 (3.5, 1.5, 2.7, 3.2, 0.9).

EPIGYNE. EF slightly longer than wide; ar recurved; MS as wide as long with posterior margin surpassing tips of triangular projections of LL (right projection moved during handling).

VULVA. GP small, round; SP packed within sclerotized structure, with internal ducts convoluted; FD hook-shaped, medio-posteriad ( Figs 15D , 16 B−C).

Distribution

Only known from the type locality in Puerto Rico ( Fig. 21 ).

Figures

Fig. 15. Neostasina toronegro sp. nov., holotype, ♀ (MCZ 30719). A. Habitus, dorsal view. B. Habitus, ventral view. C. Epigyne, ventral view. D. Vulva, dorsal view. Scale bars: A−B = 2 mm; C−D = 0.5 mm.

Fig. 16. Neostasina toronegro sp. nov., A−B: holotype, ♀ (MCZ 30719). A. Epigyne, ventral view. B. Vulva, dorsal view. C. Schematic course of internal duct system. Abbreviations: ar = anterior rim; CD = copulatory duct; FD = fertilization duct; GP = glandular projection; LL = lateral lobe; MS = median septum. Scale bars = 0.5 mm.

Fig. 21. Distribution map for the genus Neostasina Rheims & Alayón, 2016 (Puerto Rico).