Hexapopha m-scripta ( Birabén, 1954 )

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 : 147

Hexapopha m-scripta ( Birabén, 1954)

Fig. 101 , Map 1

Gamasomorpha M-scripta Birabén, 1954: 187 , f. 8–13, 45 (female holotype from Oberá, Missiones, Argentina, Nov. 01, 1948, M. Birabén, leg., deposited in Museo de La Plata , Argentina, PBI_OON 14936; female paratype from Santa María, Missiones, XI –XII.1953, Exp. J.M. Viana leg.; deposited in the Museo Argentino de Ciencias Naturales, Argentina, PBI_OON 25568, not examined); Grismado & Izquierdo, 2014: 162, f. 39a,b.

Gamasomorpha emscripta ; Brignoli, 1983: 183 (lapsus).

Hexapopha m-scripta ; Ott et al., 2019: 8

Diagnosis. Females resemble those of H. ilhoa sp. nov., H. pantaneira sp. nov., H. manauara sp. nov. and H. pithecia sp. nov. by the presence of a V-shaped postepigastric scape fused to a broad (longer than wide or nearly as long as wide) postepigastric plate ( Figs 80G , 93G , 96G , 99G ). They differ from those of H. pithecia sp. nov. by the continuous lateral margins of the postepigastric plate (lateral margins excavated in H. pithecia sp. nov.); from those of H. ilhoa sp. nov., by the angular posterior margin of postepigastric plate (rounded in H. ilhoa sp. nov.); and from those of both H. manauara sp. nov. and H. pantaneira sp. nov. by the posterior margin of the postepigastric plate forming an angle of nearly 120º (less than 90º in those species) ( Figs 101F–H ).

Description. Male. Unknown.

Female (PBI_OON 44499). Total length 1.98. CEPHALOTHORAX: Carapace orange-brown, without any pattern, pars cephalica strongly elevated in lateral view, surface of elevated portion of pars cephalica smooth, sides granulate, fovea absent ( Figs 101B–C ). Eyes all oval; posterior eye row procurved from above, straight from front; ALE separated by their radius to diameter, ALE-PLE separated by less than ALE radius, PME touching throughout most of their length, PLE-PME separated by less than PME radius ( Fig. 101E ). Sternum longer than wide, pale orange, with radial furrows between coxae I–II, II–III, III–IV, furrow with rows of small pits, surface finely reticulate, without pits, microsculpture everywhere but front ( Fig. 101D ). Mouthparts: Chelicerae, endites and labium pale orange. Chelicerae distal region abruptly narrowed. Labium rectangular, anterior margin indented at middle ( Figs 101D–E ). ABDOMEN: dorsum soft portions pale orange. Book lung covers small, very narrow. Dorsal scutum orange-brown, covering full length of abdomen, no soft tissue visible from above. Epigastric scutum not protuding. Postepigastric scutum orange-brown, almost semicircular, covering about 3/4 of abdominal length ( Figs 101A–B,F ). LEGS: orange-brown, GENITALIA: Ventral view: postepigastric plate V-shaped; postepigastric scape present, short. Dorsal view: anterior genitalic process with straight arms; genital duct forming at least one lap ( Figs 101G–H ).

Other material examined. Brazil. Rio Grande do Sul. São Borja : riverine forest (Uruguai River), July 21, 1989 to July 30, 1989, Garabi , 1♀ ( MCTP 1157 PBI _ OON 44499 ) .

Distribution. Known from Misiones province, Argentina and west of the state of Rio Grande do Sul, Brazil ( Map 1 ).

Figures

MAP 1. Distribution of Hexapopha

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.