Hexapopha sorkini, Feitosa & Ott & Bonaldo, 2023

Feitosa, Níthomas M., Ott, Ricardo & Bonaldo, Alexandre B., 2023, Meeting the southern brothers: a revision of the Neotropical spider genus Hexapopha Platnick, Berniker & Víquez, 2014 (Araneae, Oonopidae), Zootaxa 5329 (1), pp. 1-150 : 105-108

Hexapopha sorkini sp. nov.

Figs 70–71 ; Map 4

Type material: Holotype: male from Gran Sabana 10 Km N. Luepa, 1500 m, Luepa , Bolivar, Venezuela, Jun. 26–Jul. 11, 1987, S. & J. Peck leg., 1♁, deposited in AMNH, PBI _ OON 38013 ). Paratypes: same data as holotype, 1♀ ( AMNH, PBI _ OON 46280 ) ; 1♁ ( AMNH, PBI _ OON 38012 ) ; Jun. 1–11, 1987, 1♁ ( AMNH, PBI _ OON 28 ) .

Etymology. The specific name is a patronym honoring Louis Sorkin (AMNH), for his great help managing Oonopidae shipments from AMNH to globiners around the world.

Diagnosis. Males resemble those of H. brasiliana by the endite’s P1 with a prolateral process ( Fig. 69D ); they differ by that process being slightly serrated, not bent upwards. ( Fig. 72E ). Females resemble those of H. una sp. nov., H. brasiliana (Bristowe) , H. baehrae sp. nov., H. hone Platnick, Berniker & Víquez , H. pithecia sp. nov., H. ilhoa sp. nov., m-scripta (Birabén) , H. pantaneira sp. nov. and H. manauara sp. nov. by the presence of a postepigastric scape fused to a broad (longer than wide or nearly as long as wide) postepigastric plate ( Figs 7G , 62G , 68G , 80G , 93G , 96G , 99G , 101G , Platnick et al., 2014, fig. 78). They differ by the trapezoid postepigastric plate and by the inconspicuous scape, with sinuous posterior margin ( Fig. 71H ) (scape conspicuous, U-shaped in H. una sp. nov., H. brasiliana (Bristowe) , H. baehrae sp. nov., H. hone Platnick, Berniker & Víquez ; V-shaped in H. pithecia sp. nov., H. ilhoa sp. nov., m-scripta (Birabén) , H. pantaneira sp. nov. and H. manauara sp. nov.).

Description. Male (PBI_OON 38013). Total length 1.55. CEPHALOTHORAX: Carapace orange-brown, with Coxapopha -like pattern, pars cephalica with two posterior humps in lateral view, surface of elevated portion of pars cephalica smooth, sides striated, fovea present ( Figs 70B–C ). Eyes ALE oval, PME circular, PLE oval; posterior eye row straight from above, recurved from front; ALE separated by their radius to diameter, ALE-PLE separated by less than ALE radius, PME touching, PLE-PME separated by less than PME radius ( Fig. 70E ). Sternum wider than long, pale orange, median concavity absent, with radial furrows between coxae I–II, II–III, III–IV, furrow with rows of small pits, surface finely reticulate, without pits, microsculpture absent; presence of two elevated structures in the middle of the sternum ( Figs 70D , 72B ). Mouthparts: Chelicerae distal region unmodified ( Fig. 70E ). Labium anterior margin anteriorly projecting at middle, wider than long ( Fig. 72D ). Endites with a median projection (mp), an prolateral process of P1, and P1 and P2; mp very short, anterior margin serrated; P1 lamellar, situated posteriorly to mp, laterally to prolateral process of P; prolateral process of P1short, anterior margin serrated; P2 lamellar, tip narrow, situated anteriorly to mp ( Figs 70F, C–E ). ABDOMEN: dorsum soft portions pale orange. Book lung covers small, very narrow. Dorsal scutum orange-brown, without color pattern, covering full length of abdomen, no soft tissue visible from above. Epigastric scutum not protruding. Postepigastric scutum orange-brown, almost semicircular, covering nearly full length of abdominal length ( Figs 70B, G ). LEGS: pale orange. GENITALIA: Epigastric region with sperm pore situated at level of posterior spiracles. Palp proximal segments pale orange; embolus tip flattened, not bent upwards; conductor present, without projections, shorter than embolus, tip flattened ( Figs 70G–I , 72F–I ).

Female (PBI_OON 46280). As in male except as noted. Total length 1.75. CEPHALOTHORAX: Carapace pars cephalica strongly elevated in lateral view ( Figs 71B ). Mouthparts: Chelicerae, endites and labium pale orange. Labium rectangular ( Fig. 71D ). GENITALIA: Ventral view: postepigastric plate with slightly W-shaped posterior margin; postepigastric scape present ( Fig. 71H ).

Other material examined. None.

Distribution. Known only from type locality, Luepa, state of Bolivar, Venezuela ( Map 4 ).

Figures

MAP 4. Distribution of Hexapopha species.

FIGURES 7A–H. Hexapopha una sp. nov., female (IBSP 64441; PBI_OON 51576). A–B habitus. A, dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 62A–H. Hexapopha baehrae sp. nov., female (MCN 8554; PBI_OON 46377). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 68A–H. Hexapopha brasiliana (Bristowe), female (IBSP 60493; PBI_OON 44502). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 69A–L. Hexapopha brasiliana (Bristowe), SEM images. A–H male (IBSP 60492; PBI_OON 44497). I–L female (IBSP 68399; PBI_OON 52609). A carapace, ventral view. B mouthparts, ventral view. C–E endites. C lateral view. D ventral view (asterisk: prolateral process of P1). E detail of D, showing median projections and projection P2. F left palp, retrolateral view. G–H embolus. G prolateral view. H retrolateral view. I epigastric region, ventral view. J detail of I, showing slit-shaped opening. K internal genitalia, dorsal view. L detail of K, showing genital duct. Abbreviations: as, anterior sclerite; d, duct; mp, median projection; ps, posterior sclerite; P, projection; sc, postepigastric scape.

FIGURES 70A–I. Hexapopha sorkini sp. nov., male (AMNH; PBI_OON 28). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F mouthparts, ventral view. G abdomen, ventral view. H–I left palp. H prolateral view. I retrolateral view. Scale bars: 0.1mm.

FIGURES 71A–H. Hexapopha sorkini sp. nov., female (AMNH; PBI_OON 46280). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F–G abdomen. F ventral view. G anterior view. H epigastric region, ventral view (arrow: margin of postepigastric plate). Scale bars: 0.1mm.

FIGURES 72A–I. Hexapopha sorkini sp. nov., male, SEM images (AMNH; PBI_OON 46280). A–B carapace. A lateral view. B ventral view. C–D mouthparts, ventral view. E right endite, ventral view, detail of projections (asterisk: prolateral process of P1). F–G right palp. F retrolateral view. G prolateral view. H–I embolus. H retrolateral view. I prolateral view. Abbreviations: mp, median projection; P, projection.

FIGURES 80A–H. Hexapopha ilhoa sp. nov., female (MCN 5178; PBI_OON 46370). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 93A–H. Hexapopha pithecia sp. nov., female (MUSM; PBI_OON 44504). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 96A–H. Hexapopha manauara sp. nov., female (INPA; PBI_OON 45396). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 99A–H. Hexapopha pantaneira sp. nov., female (IBSP 69640; PBI_OON 52497). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 101A–H. Hexapopha m-scripta (Birabén), female (MCTP 1157; PBI_OON 44499). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.