Neostasina gunboat, 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 : 322-323

Neostasina gunboat sp. nov.

Figs 68−71 , Map 5

Type material: Holotype: ♂, Jamaica, Kingston Parish, Gunboat Beach [17°56’N, 76°45’W], 19 November 1963, A.M. Chickering leg. ( MCZ 69738).

Etymology. The specific name is a noun in apposition and refers to the type locality.

Diagnosis. Males of N. gunboat sp. nov. resemble those of N. bryantae sp. nov. and N. maroon sp. nov. ( Figs 42 , 115 ) in the bifid vRTA ( Fig. 70 ). They are distinguished from both species by the embolus with two subsequent dorsal keels ( Figs 69, 71 ) (absent in N. bryantae sp. nov. and single in N. maroon sp. nov.). Females are unknown.

Description. Male: Prosoma brown, slightly darker at eye area, with thin dark brown lines along thoracic striae, lateral margins of cephalic region and extending posteriorly from PME. Fovea dark brown. Eye borders black. Chelicerae brown with dark brown longitudinal stripe. Legs and pedipalps brown. Leg tarsi darker. Sternum yellow with brown margins. Endites pale brown, distally cream colored. Labium brown, distally cream colored. Opisthosoma cream colored; dorsally densely covered with gray marks. Total length 8.6. Prosoma: 3.9 long, 3.4 wide. Opisthosoma: 4.7 long, 2.6 wide. Eyes: diameters: 0.24, 0.22, 0.16, 0.20; interdistances: 0.20, 0.10, 0.36, 0.30, 0.18, 0.10. Legs (2143): I: 13.4 (3.7, 1.9, 3.4, 3.5, 0.9); II: 13.8 (4.0, 1.9, 3.5, 3.5, 0.9); III: 10.4 (3.2, 1.5, 2.4, 2.5, 0.8); IV: 12.5 (3.7, 1.5, 2.9, 3.5, 0.9). Palp: VTA triangular, situated medially; dRTA roughly rectangular in retrolateral view; vRTA with one branch two times longer than wide, with rounded tip and the other small and rounded in retrolateral view; eRTA absent; tegular protrusion arising from tegulum at 6 o’clock position; median apophysis arising from tegulum at 3 o’clock position; conductor with the same width throughout its entire length; TBC short, slender, two times longer than wide; embolus arising from tegulum at 9 o’clock position, gently narrowing towards filiform tip; TBE single ( Figs 68−71 ).

Female: unknown.

Distribution. Only known from the type locality in Jamaica (Map 5).

Remarks. See remarks for N. guanaboa sp. nov.

Figures

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 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 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.