Neostasina maisi, 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 : 184-188

Neostasina maisi sp. nov.

urn:lsid:zoobank.org:act:1CA9AFFC-3FD1-4A3A-9755-BE4B998212D9

Figs 9−11 , 18

Diagnosis

Males of N. maisi sp. nov. are distinguished from all congeners by the palps with TBE bifid, with longer branch filiform and the other small and thorn-like ( Fig. 11 B−C). Females resemble those of N. baoruco ( Rheims & Alayón 2016: fig. 23) by the epigyne with ar divided and MS roughly triangular. They are distinguished from the latter species by the spermathecae anteriorly globose with smooth lateral margins ( Fig 11A ) (inverted U-shaped with outer lateral margins bearing indentations in N. baoruco ).

Etymology

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

Material examined

Holotype CUBA • 1 ♂; Guantanamo Province, Maisí [20.2667, 74.2000]; Punta de Maisí ; 8 Aug. 1998; A. Sanchéz leg.; MNHNCu.

Paratypes CUBA • 2 ♀♀; same collection data as for holotype; MNHNCu .

Description

Male (holotype)

COLOR. Prosoma pale brownish orange; cephalic region with pale brown lines extending posteriorly from PME and PLE; thoracic region darker along thoracic striae, with thin brown lines extending from fovea to lateral margins; fovea brown; eye borders black. Chelicerae slightly darker than prosoma. Legs and palps lighter than prosoma. Labium brown distally pale brown. Endites pale brown distally yellowish cream colored. Opisthosoma yellowish cream colored; dorsally with brown pattern of irregular elongated marks laterally, four pairs of irregularly rounded marks around cardiac mark and six median chevrons down posterior half; ventrally with few elongated marks laterally and few scattered spots. Spinnerets yellowish cream colored ( Fig. 9 A−B).

MEASUREMENTS. Total length 8.4, prosoma length 4.4, width 3.8, opisthosoma length 3.8, width 2.5. Eye diameters: 0.30, 0.25, 0.20, 0.25; interdistances: 0.18, 0.14, 0.30, 0.32, 0.15, 0.09. Legs: I: 15.7 (4.4, 2.3, 4.0, 4.0, 1.0); II: 16.4 (4.8, 2.4, 4.2, 4.0, 1.0); III: 12.8 (4.0, 2.0, 2.9, 3.0, 0.9); IV: absent.

PALP. VTA reduced to small medial bump; vRTA as large as dRTA fin-shaped in ventral view, clubshaped in retrolateral view; dRTA tapering in ventral view; cymbium bulging retrolaterally; bulb with pt at 7 o’clock position; E arising from tegulum at 8−9 o’clock position; TBC massive, thumb-shaped; MA arising from tegulum at 4 o’clock position; C with the same width throughout its entire length ( Figs 10 A−C, 11A−D).

Female (paratype)

COLOR. Coloration pattern as in male; prosoma, chelicerae, legs and palps darker ( Fig. 9 C−D).

MEASUREMENTS. Total length 13.9; prosoma length 5.1, width 4.4; opisthosoma length 8.4, width 5.0. Eye diameters: 0.32, 0.25, 0.21, 0.26; interdistances: 0.20, 0.25, 0.42, 0.45, 0.19, 0.12. Legs (2413): I: 15.1 (4.3, 2.5, 3.9, 3.5, 0.9); II: 15.7 (4.6, 2.5, 4.0, 3.7, 0.9); III: 12.9 (4.1, 2.1, 2.9, 3.0, 0.8); IV: 15.5 (4.7, 2.0, 3.6, 4.2, 1.0).

EPIGYNE. EF longer than wide; ar gently curved; MS wider than long with posterior margin rounded, slightly surpassing tips of posterior projections of LL ( Figs 10D , 11E ).

VULVA. GP rounded, slightly wider than long, postero-mediad; FD hook-shaped, postero-mediad ( Figs 10E , 11 F−G).

Variation

Two females: total length 13.9−14.3; prosoma length 5.1−6.4.

Distribution

Only known from the type locality in Guantanamo province, Cuba ( Fig. 18 )

Figures

Fig. 9. Neostasina maisi sp. nov., A−B: holotype, ♂ (MNHNCu), C−D: paratype ♀ (MNHNCu). A. Habitus, dorsal view. B. Habitus, ventral view. C. Habitus, dorsal view. D. Habitus, ventral view. Scale bars = 2 mm.

Fig. 10. Neostasina maisi sp. nov., A−C: holotype, ♂ (MNHNCu), D−E: paratype, ♀ (MNHNCu). 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. 11. Neostasina maisi sp. nov., A−D: holotype, ♂ (MNHNCu), E−F: paratype, ♀ (MNHNCu). 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; pt = tegular protrusion; SP = spermathecae; TBC = tegular projection at base of conductor; TBE = tegular projection at base of embolus; vRTA=ventral branch of RTA; VTA = ventral tibial apophysis. Scale bars = 0.5 mm.

Fig. 18. Distribution map for the genus Neostasina Rheims & Alayón, 2016 (Cuba).