Neostasina bryantae, Rheims & Alayón, 2016

Rheims, Cristina Anne & Alayón, Giraldo, 2016, Neostasina gen. nov., a new genus of huntsman spiders from the Neotropical region (Araneae, Sparassidae, Sparianthinae), Zootaxa 4079 (3), pp. 301-344 : 315-316

Neostasina bryantae sp. nov.

Figs 40−45 , Map 3

Type material: Holotype: ♂, Cuba, Cienfuegos, Cumanayagua, 1km Hotel Serrano (22°08’N, 80°12’W), 18 May 2013, Team CarBio leg. ( NMNH).

Paratypes: CUBA: 2♀, Cienfuegos, Mayari, 4km Estación Monte Serrano (21°57’N, 80°04’W), 18 May 2013, Team CarBio leg. ( NMNH).

Etymology. The specific name is a patronym honoring Dr. Elizabeth Bryant.

Diagnosis. Males of N. bryantae sp. nov. resemble those of N. gunboat sp. nov. and N. maroon sp. nov. ( Figs 70 , 115 ) in the vRTA bifid ( Fig. 42 ). They are distinguished from both species by the absence of a tegular protrusion (present in the other species) and by the filiform embolus (with dorsal keels in the other two species) ( Fig. 41 ). Females are distinguished from the other species of the genus by the median septum bearing a chaliceshaped scape ( Fig. 43 ).

Description. Male (NMNH, holotype): Prosoma pale orange with black margins, black fovea and thin black lines along lateral margins of cephalic region and extending posteriorly from PME. Eye borders black. Chelicerae pale orange with faint longitudinal black stripe. Legs pale orange, darker at tibiae and metatarsi. Pedipalps pale yellow. Sternum pale yellow with pale brown margins. Endites pale yellow. Labium pale orange, distally pale yellow. Opisthosoma cream colored; dorsally with gray pattern of irregular marks laterally and on anterior half and chevron like marks on posterior half; ventrally mottled with few gray spots. Total length 5.2. Prosoma: 2.7 long, 2.4 wide. Opisthosoma: 2.4 long, 1.9 wide. Eyes: diameters: 0.21, 0.17, 0.11, 0.14; interdistances: 0.15, 0.06, 0.28, 0.22, 0.10, 0.05. Legs (2143): I: 9.8 (2.7, 1.1, 2.8, 2.5, 0.7); II: 10.10 (3.0, 1.2, 2.7, 2.5, 0.7); III: 8.1 (2.5, 1.0, 2.0, 2.0, 0.6); IV: 9.5 (2.9, 0.9, 2.3, 2.7, 0.7). Palp: VTA small, retrolaterally displaced; dRTA triangular in ventral view, roughly rectangular in retrolateral view; vRTA with one short conical, pointed branch and the other branch squared in retrolateral view; eRTA pointed; median apophysis arising from tegulum at 3 o’clock position; conductor with the same width throughout its entire length; TBC long, cylindrical, more than three times longer than wide; embolus arising from tegulum at 6:30 o’clock position ( Figs 40−42 ).

Female (NMNH, paratype): Coloration pattern as in male, slightly darker. Total length 6.4. Prosoma: 2.6 long, 2.5 wide. Opisthosoma: 3.8 long, 2.2 wide. Eyes: diameters: 0.16, 0.16, 0.09, 0.14; interdistances: 0.18, 0.13, 0.30, 0.26, 0.18, 0.08. Legs (2413): I: 8.7 (2.6, 1.1, 2.4, 2.0, 0.6); II: 9.0 (2.7, 1.4, 2.3, 2.0, 0.6); III: 7.3 (2.4, 1.1, 1.5, 1.7, 0.6); IV: 8.9 (2.7, 1.0, 2.0, 2.5, 0.7). Epigyne: epigynal field roughly squared, as long as wide; anterior rim entire, recurved; median septum covered by scape, posterior margin gently procurved ( Fig. 43 ). Vulva: copulatory ducts medially bent at a 90° angle; glandular projections small and rounded; spermathecae with one anteriad loop before anterior twist, packed within an irregular shaped sclerotized structure ( Figs 44−45 ).

Variation. Females (n = 2): total length 6.4−6.5; prosoma length 2.6−2.7.

Distribution. Only known from the type locality (Map 3).

Figures

FIGURES 40 − 45. Neostasina bryantae sp. nov. 40 − 42 Male, left palp (40 prolateral, 41 ventral, 42 retrolateral); 43 − 45 Female (43 epigyne, 44 vulva, 45 schematic course of internal duct system). al = anterior loop of spermathecae; at = anterior twist of spermathecae; CD = copulatory duct; dRTA = dorsal branch of RTA; eRTA = extra retrolateral tibial apophysis; FD = fertilization duct; GP = glandular projection; sc = scape; TBC = tegular projection at base of conductor; TBE = tegular projection at base of embolus; vRTA = ventral branch of RTA; VTA = ventral tibial apophysis. Scale lines: 1 mm.

FIGURES 68 − 71. Neostasina gunboat sp. nov., male, left palp (68 prolateral, 69 ventral, 70 retrolateral, 71 detail of embolus and TBE). dRTA = dorsal branch of RTA; E = embolus; ek = dorsal keel of embolus; pt = tegular protrusion; TBC = tegular projection at base of conductor; TBE = tegular projection at base of embolus; vRTA = ventral branch of RTA; VTA = ventral tibial apophysis. Scale lines: 1 mm.

FIGURES 113 − 119. Neostasina maroon sp. nov. 114 − 116 Male, left palp (113 prolateral, 114 ventral, 115 retrolateral, 116 detail of embolus and TBE); 117 − 119 Female (117 epigyne, 118 vulva, 119 schematic course of internal duct system). am = anterior margin of median septum; ar = anterior rim of epigyne; CD copulatory duct; dRTA = dorsal branch of RTA; E = embolus; ek = dorsal keel of embolus; eRTA = extra retrolateral tibial apophysis; FD = fertilization duct; GP = glandular projection; pt = tegular protrusion; TBC = tegular projection at base of conductor; TBE = tegular projection at base of embolus; vRTA = ventral branch of RTA; VTA = ventral tibial apophysis. Scale lines: 1 mm.