Neostasina montegordo, 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 : 334-335

Neostasina montegordo sp. nov.

Figs 120−122 , Map 3

Type material: Holotype: ♀ from Cuba, Granma, Monte Gordo, Niquero [20°02’ N, 77°35’ W], 26 June 1988, A.R. Estrada leg. (MNHNCu).

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

Diagnosis. Females of N. montegordo sp. nov. are distinguished from those of the other species of the genus by the median septum light bulb-shaped ( Fig. 120 ) and by the spermathecae packed into oblong sclerotized structure with irregular bulges ( Fig. 121 ). Males are unknown.

Description. Female: Prosoma orange, slightly darker along lateral margins of the cephalic region and along thoracic striae. Fovea brown. Chelicerae brown. Legs and pedipalps orange, slightly lighter than prosoma. Labium and endites orange brown, distally cream colored. Sternum orange with darker, slightly more sclerotized margins. Opisthosoma brownish gray with small, scattered yellowish brown marks on anterior half. Total length 16.7. Prosoma: 6.8 long, 6.6 wide. Opisthosoma: 5.8 long, 5.1 wide. Eyes: diameters: 0.40, 0.33, 0.23, 0.32; interdistances: 0.30, 0.28, 0.57, 0.56, 0.25, 0.08. Legs (2143): I: 23.2 (6.5, 3.3, 6.1, 6.1, 1.2); II: 23.6 (6.9, 3.4, 6.1, 5.9, 1.3); III: 18.5 (5.7, 2.7, 4.4, 4.5, 1.2); IV: 22.4 (6.5, 2.5, 5.4, 6.4, 1.6). Epigyne: epigynal field rectangular, longer than wide; anterior rim entire, recurved; median septum longer than wide ( Fig. 120 ). Vulva: glandular projections short, rounded with wide base; internal ducts indistinguishable ( Figs 121−122 ).

Male: unknown.

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

Remarks. In this paper we describe three new species from Cuba that are known from only one sex.

Neostasina montegordo sp. nov. and N. turquino sp. nov. are known solely from females and N. siemprevenrde sp. nov. solely from males. Despite being found in close proximity, we believe they are indeed different species. Neostasina montegordo sp. nov. is significantly larger (almost twice the size) than N. siempreverde sp. nov. and N. turquino sp. nov., whereas the latter, while similar sized, show significant differences in coloration pattern.

Figures

FIGURES 120 − 122. Neostasina montegordo sp. nov., female (120 epigyne, 121 vulva, 122 schematic course of internal duct system). b = bulge of spermathecae; CD = copulatory duct; FD = fertilization duct; GP = glandular projection. Scale line: 1 mm.