Neostasina aceitillar, 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 : 173-175

Neostasina aceitillar sp. nov.

urn:lsid:zoobank.org:act:DA91446F-37DA-4E58-B6C9-90E0B01D26BA

Figs 1−2 , 19

Diagnosis

Females of N. aceitillar sp. nov. resemble those of N. bani sp. nov. ( Figs 4 D−E, 5E−G) by the epigyne with MS heart-shaped, with anterior median indentation and by the SP packed within a sclerotized structure with internal ducts with more than one twist. They are distinguished from those of the latter species by the indentation extending posteriorly, surpassing half MS length ( Figs 1C , 2A ) (not extending posteriorly in N. bani sp. nov.) and by the SP bearing only two twists ( Figs 1D , 2 B−C) (three in N. bani sp. nov.). Males are unknown.

Etymology

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

Material examined

Holotype DOMINICAN REPUBLIC • 1 ♀; Pedernales Province, Las Mercedes, El Aceitillar [18.1251, 71.5616]; Carretera Km 17; 1 Feb. 2005; A. Sanchez leg.; MNHNPEJM

Paratypes DOMINICAN REPUBLIC • 1 ♀; Duarte Province, Yuma region, Guaraguao, Parque Nacional del Este [18.1011, 68.8161]; La Romana; 7 Jan. 1987; E. Marcano leg.; MNHNPEJM • 2 ♀♀; Independencia Province; El Naranjo [18.3333, 71.6167]; Puerto Escondido, Sierra de Baoruco ; 26−27 Jan. 1991; G. Alayón leg.; MNHNPEJM .

Description

Female (holotype)

COLOR. Prosoma pale brownish orange; cephalic region with pair of dark brown stripes extending posteriorly from PME; thoracic region with brown striae extending from fovea to lateral margins; fovea brown; eye borders black. Chelicerae brown, slightly darker than prosoma with pair of longitudinal dark brown stripes. Legs and palps pale brownish orange, slightly lighter than prosoma. Labium dark brown, distally cream colored. Endites brown, distally cream colored. Sternum pale brownish orange with slightly darker margins. Opisthosoma brownish gray; dorsally with faint brown pattern of scattered irregular marks; ventrally with few scattered brown spots. Spinnerets pale yellowish brown ( Fig. 1 A−B).

MEASUREMENTS. Total length 16.1, prosoma length 6.6, width 5.3, opisthosoma length 8.8, width 5.5. Eye diameters: 0.41, 0.33, 0.22, 0.32, interdistances: 0.33, 0.40, 0.60, 0.66, 0.30, 0.20. Legs (4213): I: 20.4 (6.0, 3.2, 5.5, 4.6, 1.1); II: 20.9 (6.2, 3.2, 5.2, 5.1, 1.2); III: 17.0 (5.3, 2.8, 3.8, 4.1, 1.0); IV: 21.2 (6.4, 2.5, 4.7, 6.0, 1.6).

EPIGYNE. EF longer than wide; ar entire, strongly recurved, not covering the anterior margin of MS; MS wider than long, posterior margin at level with tips of posterior projections of LL ( Figs 1C , 2A ).

VULVA. GP longer than wide, antero-mediad; FD mediad ( Figs 1D , 2 B−C).

Distribution

Known from the Dominican Republic (Pedernales and Independencia Provinces) ( Fig. 19 ).

Figures

Fig. 1. Neostasina aceitillar sp. nov., A−B: paratype, ♀ (MNHNPEJM), C−D: holotype, ♀ (MNHNPEJM). 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. 2. Neostasina aceitillar sp. nov., A−B: holotype, ♀ (MNHNPEJM). A. Epigyne, ventral view. B. Vulva, dorsal view. C. Schematic course of internal duct system. Abbreviations: am = anterior margin; ar = anterior rim; CD = copulatory duct; FD = fertilization duct; GP = glandular projection; LL = lateral lobe; MS = median septum. Scale bars = 0.5 mm.

Fig. 19. Distribution map for the genus Neostasina Rheims & Alayón, 2016 (Dominican Republic and Haiti).

Fig. 4. Neostasina bani sp. nov., A−C: holotype, ♂ (MNHNPEJM), D−E: paratype, ♀ (MNHNPEJM). A. Left palp, prolateral view. B. Left palp, ventral view.C. Left palp, retrolateral view. D. Epigyne, ventral view. E. Vulva, dorsal view. Scale bars = 0.5 mm.