Neostasina bani, 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 : 175-179

Neostasina bani sp. nov.

urn:lsid:zoobank.org:act:BE862A5A-CDB1-49D7-A969-4084F68B1C09

Figs 3−5 , 19

Diagnosis

Males of N. bani sp. nov. resemble those of N. oualie ( Rheims & Alayón 2016: figs 123−125) by the palps with vRTA reduced to a small bump at the base of dRTA and by lacking TBC. They are distinguished by lacking spine-like eRTA, by TBE single and E arising from tegulum at 9 o’clock position ( Fig. 5 B−D) (eRTA present, TBE bifid and E filiform, arising from tegulum at 7 o’clock position in N. oualie ). Females resemble those of N. aceitillar sp. nov. ( Figs 1 C−D, 2A−C) by the epigyne with MS heart-shaped, bearing a medial anterior indentation and by the SP packed within a sclerotized structure with internal ducts bearing more than one twist. They are distinguished from those of the latter species by the medial indentation not extending posteriorly ( Figs 4D , 5E ) (extending posteriorly, surpassing half MS length in N. aceitillar sp. nov.) and by the SP bearing three twists ( Figs 4E , 5 F−G) (only two in N. aceitillar sp. nov.).

Etymology

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

Material examined

Holotype DOMINICAN REPUBLIC • 1 ♂; Peravia Province, Valdesia region, Baní [18.2796, 70.3318]; between Honduras-Matadero; 17 Dec. 2009; E. Gutierrez, A. Perez and H. Andújar leg.; MNHNPEJM.

Paratypes DOMINICAN REPUBLIC • 1 ♀, 4 juveniles; same collection data as for holotype; MNHNPEJM • 1 ♀, 4 juveniles; same collection data as for holotype; MNHNPEJM • 2 ♀♀; Independencia Province, Isla Cabritos ; [18.4830, 71.6830]; Lago Enriquillo; 28 Mar. 1986, Cicero and Marcano leg.; MNHNPEJM .

Description

Male (holotype)

COLOR. Prosoma pale orange; cephalic region with brown lines along lateral margins end extending posteriorly from PME; thoracic region with brown lines extending from fovea to lateral margins; fovea brown; eye borders black. Chelicerae orange, slightly darker than prosoma. Legs and palps pale orange. Labium pale brow, distally pale yellow. Endites pale yellow, distally cream colored. Sternum pale yellow Opisthosoma greyish cream colored; dorsally with barely distinguishable pattern with brown chevrons on posterior half; ventrally with few scattered brown spots. Spinnerets pale orange, distally lighter ( Fig. 3 A−B).

MEASUREMENTS. Total length 8.2, prosoma length 3.9, width 3.6, opisthosoma length 4.3, width 2.9. Eye diameters: 0.30, 0.23, 0.17, 0.22; interdistances: 0.15, 0.15, 0.37, 0.36, 0.17, 0.09. Legs (1243): I: 16.8 (4.8, 2.2, 4.4, 4.4, 1.0); II: 16.6 (4.7, 2.2, 4.4, 4.3, 1.0); III: 12.8 (3.9, 1.7, 3.0, 3.3, 0.9); IV: 15.4 (4.6, 1.2, 3.8, 4.7, 1.1).

PALP. VTA large, distally rounded, displaced retrolaterally; dRTA distally bifid with two points, the ventral one longer; cymbium bulging retrolaterally, without retroproximal protrusion; bulb lacking protrusions; E with long ventral keel; TBE strongly curved subdistally; C distally fanned; MA arising from tegulum at 9 o’clock position ( Figs 4 A−C, 5A−D).

Female (paratype)

COLOR. Coloration pattern as in male; prosoma with less conspicuous brown markings; opisthosoma with stronger brown pattern of scattered brown marks laterally and undefined chevrons medially down posterior half ( Fig. 3 C−D).

MEASUREMENTS. Total length 11.7, prosoma length 5.0, width 4.2, opisthosoma length 6.1, width 3.4. Eye diameters: 0.30, 0.25, 0.20, 0.25; interdistances: 0.22, 0.30, 0.47, 0.45, 0.23, 0.10. Legs (2143): I: 16.1 (4.6, 2.7, 4.0, 3.9, 0.9); II: 16.7 (4.9, 2.7, 4.2, 4.0, 0.9); III: 12.9 (4.0, 2.0, 3.0, 3.0, 0.9); IV: 16.0 (4.9, 2.0, 3.7, 4.4, 1.0).

EPIGYNE. EF longer than wide; ar entire, recurved, not covering anterior margin of MS; MS wider than long with posterior margin slightly surpassing tips of posterior projections of LL ( Figs 4D , 5E ).

VULVA. GP slightly longer than wide, postero-mediad; FD hook-shaped mediad ( Figs 4E , 5 F−G).

Variation

Two females: total length 10.7−13.3; prosoma legth 4.7−5.5; femur I length 3.9−4.6.

Distribution

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

Figures

Fig. 3. Neostasina bani sp. nov., A−B: holotype, ♂ (MNHNPEJM), C−D: paratype, ♀ (MNHNPEJM). A. Habitus, dorsal view. B. Habitus, ventral view. C. Habitus, dorsal view. D. Habitus, ventral view. Scale bars = 2 mm.

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.

Fig. 5. Neostasina bani sp. nov., A−D: holotype, ♂ (MNHNPEJM), E−F: paratype, ♀ (MNHNPEJM). A. Left palp, prolateral view. B. Left palp, ventral view. C. Left palp, retrolateral view. D. TBE, detail, ventral view.E. Epigyne, dorsal view.F. Vulva, ventral view. G. Schematic course of internal duct system. Abbreviations: ar = anterior rim; C = conductor; CD = copulatory duct; dRTA = dorsal branch of RTA; E = embolus; FD = fertilization duct; GP = glandular projection; LL = lateral lobe; MA = median apophysis; MS = median septum; SP = spermathecae; TBC=tegular projection at base of conductor; TBE = tegular projection at base of embolus; vk = ventral keel; vRTA = ventral branch of RTA; VTA = ventral tibial apophysis. Scale bars = 0.5 mm.

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

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.