Nops finisfurvus Sánchez

Sánchez-Ruiz, Alexander & Brescovit, Antonio D., 2018, A revision of the Neotropical spider genus Nops MacLeay (Araneae: Caponiidae) with the first phylogenetic hypothesis for the Nopinae genera, Zootaxa 4427 (1), pp. 1-121 : 31-32

Nops finisfurvus Sánchez –Ruiz, Brescovit & Alayón, 2015

Figures 15A‒G ; 16 A‒F

Nops finisfurvus: Sánchez –Ruiz, Brescovit & Alayón, 2015: 52, figs 7–12, 44–56, 79, 83. Male holotype from Fallen Jerusalem Island (18°24′58.0″N, 64°27′8.0″W), British Virgin Islands, 24.v.1966, Project Island Staff, University of Puerto Rico (AMNH); female paratype from Peter Island (18°21′6″N, 64°34′9″W), British Virgin Islands, 6.vii.1965, Project Island Staff, University of Puerto Rico (AMNH); all types examined.

Additional material examined. BRITISH VIRGIN ISLANDS: Little Jost Van Dyke (18°27′13″N, 64°43′19″W), 27.vii.1965, Project Island Staff, University of Puerto Rico, 1♀ ( AMNH) . East Seal Dog (18°30′24″N, 64°25′56″W), 7.vi.1966, Project Island Staff, University of Puerto Rico, 1♀ immature ( AMNH) . Peter Island (18°21′6″N, 64°34′9″W), 6.vii.1965, Project Island Staff, University of Puerto Rico, 1♀ immature ( AMNH) . Virgin Gorda Mountains (18°28′52.9″N, 64°24′21.7″W) , Virgin Gorda Island, 26.vi.1966, Project Island Staff, University of Puerto Rico, 1♂ ( AMNH) . PUERTO RICO: Culebra Island, near Dewey (18°18′9″N, 65°18′12″W), 10.viii.1965, Project Island Staff, University of Puerto Rico, 1♀ immature ( AMNH) .

Diagnosis. Both sexes can easily be separated from members of all the other species by having the posterior distal area of abdomen distinctly darker than anterior and median parts. Males have embolus distinctly shorter than tibia ( Fig. 15C‒D ), tip with two extensions, one greater than the other ( Fig. 16B‒C ). Females with a very wide invagination on receptaculum, small lobes and uterus externus with narrow base ( Fig. 16D‒F ).

Description. Male and female described by Sánchez‒Ruiz et al. (2015).

Distribution. British Virgin Islands and Culebra Island ( Fig. 8E ).

Figures

FIGURE 8. A–D Nops agnarssoni Sánchez–Ruiz, Brescovit & Alayón, male (holotype). A habitus, dorsal view. B habitus, ventral view. C left palp, retrolateral view. D left palp, prolateral view. E distribution of Nops agnarssoni Sánchez–Ruiz, Brescovit & Alayón (square), Nops blandus (Bryant) (circles) and Nops finisfurvus Sánchez–Ruiz, Brescovit & Alayón (stars). Scale bars: 2 mm (A–B), 0.5 mm (C–D).

FIGURE 15. Nops finisfurvus Sánchez–Ruiz, Brescovit & Alayón; A–D male (holotype); E–G female (paratype). A habitus, dorsal view. B habitus, ventral view. C left palp, prolateral view. D left palp, retrolateral view. E habitus, dorsal view. F external genital area, ventral view. G internal genitalia, dorsal view. Abbreviations: ap—anterior plate, ess—external sclerotization around spiracles, lep—lateral extensions of posterior plate, pp—posterior plate, re—posterior receptaculum, ue—uterus externus. Scale bars: 2 mm (A, B, E), 0.5 mm (C–D, E–F).

FIGURE 16. A–F Nops finisfurvus Sánchez–Ruiz, Brescovit & Alayón; A–C male (Virgin Gorda Island: AMNH); D–F female (Little Jost Van Dyke Island: AMNH); G–L Nops flutillus Chickering; G–I male (MCZ 128277); J–L female (MCZ 128277). A left palp, prolateral view. B tip of embolus, anterior view. C tip of embolus, prolateral view. D internal genitalia, dorsal view. E same, detail of receptaculum, anterior view. F internal genitalia, anterior view. G left palp, retrolateral view. H tip of embolus, retrolateral view. I tip of embolus, dorsal view. J internal genitalia, dorsal view. K same, detail of receptaculum, anterior view. L internal genitalia, anterior view. Abbreviations: ete—embolar tip extensions, re—posterior receptaculum, ue—uterus externus.