Hexapopha periclitata, 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 : 37-41

Hexapopha periclitata sp. nov.

Figs 21–23 ; Map 2

Type material: Holotype: male from Passo do Lontra , Corumbá, Mato Grosso do Sul, Brazil, Jan. 1998 – Nov. 1999, J. Raizer et al., leg., 1♁, deposited in IB69682, PBI_OON 52569 . Paratypes: same data as holotype, 1♁ (IB69700, PBI _ OON 52557 ) ; 1♁ (IB69667, PBI _ OON 52508 ); 1♀ (IB69666, PBI _ OON 52543 ); 2♀ (IB69659, PBI _ OON 52576 ) .

Etymology. The specific name is a Latin adjective meaning endangered, in allusion to the recent fires that raged the Pantanal biome, where the type locality of this species is located.

Diagnosis. Males of this species are similar to those of H. fannesi sp. nov. and H. erebai sp. nov., by the endite’s P1 longitudinally oriented, directed posteriorly, reaching the anterior margin of sternum ( Figs 17F , 19F , 21F ) but differ by the straigth tip of endite’s P1 ( Fig. 23B ) (folded ventrally in H. fannesi sp. nov., Fig. 18C ; twisted lateraly in H. erebai sp. nov., Fig. 20C ). Additionally, they differ from those of H. erebai sp. nov. by the absence of sternal median concavity ( Fig. 23A ). Females are similar to those of H. harveyi sp. nov. and H. peba sp. nov. by the postepigastric scape separated from the postepigastric plate but can be recognized by the tongue-shaped postepigastric scape, located in the middle of postepigastric scutum ( Figs 22F , 23I ) (tongue-shaped but near the spinnerets in H. harveyi sp. nov., Figs 15F , 16H ; tubular, not reaching the middle of the postepigastric scutum in H. peba sp. nov., Figs 12F , 13I ).

Description. Male (PBI_OON 52569). Total length 1.55. CEPHALOTHORAX: Carapace pale orange, with Coxapopha -like pattern, pars cephalica strongly elevated in lateral view, surface of elevated portion of pars cephalica smooth, sides granulate, fovea present ( Figs 21B–C ). Eyes ALE oval, PME circular, PLE oval; posterior eye row straight from above, procurved 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. 21E ). Sternum as long as wide, 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 ( Figs 21D , 23A ). Mouthparts: Chelicerae distal region unmodified ( Fig. 21E ). Labium anterior margin not indented at middle, wider than long. Endites with a median projection (mp), a P1 and a P2; mp lamellar, anterior margin serrated; P1 long, lamellar, directed posteriorly, situated posteriorly to mp, anterior margin partly serrated. P2 very short, situated posteriorly to mp ( Figs 23B–D ). ABDOMEN: dorsum soft portions pale orange. Book lung covers small, very narrow. Dorsal scutum pale orange, covering full length of abdomen, no soft tissue visible from above. Epigastric scutum not protruding. Postepigastric scutum pale orange, almost semicircular, covering nearly full length of abdominal length ( Figs 21B,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, longer than embolus, tip flattened ( Figs 21G–I ).

Female (PBI_OON 52543). As in male except as noted. Total length 1.52. CEPHALOTHORAX: Carapace without any pattern, sides striated ( Figs 22B–C ). Eyes ALE separated by more than their diameter (Fig. E). Mouthparts: Chelicerae, endites and labium pale orange. Labium rectangular ( Fig. 22D ). ABDOMEN: Dorsal scutum covering more than ¾ of abdomen, more than ½ to most of abdomen width. Postepigastric scutum covering about ¾ of abdominal length ( Figs 22B,F ). GENITALIA: Ventral view: postepigastric plate V-shaped; postepigastric scape present, separated from the postepigastric plate, located in the middle portion of the postepigastric scutum; copulatory orifice slitlike, narrow, measuring the full extent of postepigastric plate. Dorsal view: anterior genitalic process with small, straight arms; genital duct narrow; the posterior uterine sclerite has a slit-shaped opening in its anterior surface genital pouch absent ( Figs 22G–H , 23I–L ).

Other material examined. Brazil. Mato Grosso do Sul: Corumbá, Passo do Lontra , Jan. 1998 – Nov. 1999, J. Raizer et al., leg., 1♀ ( IBSP 69699 , PBI _ OON 52565 ); 1♁ ( IBSP 69641 , PBI _ OON 52517 ); 1♁, 1♀ ( IBSP 69663 , PBI _ OON 52520 ); 1♀ ( IBSP 68680 , PBI _ OON 52561 ); 1♀ ( IBSP 69656 , PBI _ OON 52518 ); 1♀ ( IBSP 69637 , PBI _ OON 52566 ); 1♀ ( IBSP 69707 , PBI _ OON 52546 ); 1♁ ( IBSP 69690 , PBI _ OON 52574 ); 1♁ ( IBSP 69694 , PBI _ OON 52503 ); 1♁ ( IBSP 69651 , PBI _ OON 52588 ); 1♁ ( IBSP 69653 , PBI _ OON 52589 ); 1♁ ( IBSP 69677 , PBI _ OON 52590 ); 1♁ ( IBSP 69683 , PBI _ OON 52592 ); 1♁ ( IBSP 69648 , PBI _ OON 52593 ); 1♁ ( IBSP 69681 , PBI _ OON 52596 ); 1♁ ( IBSP 69646 , PBI _ OON 52597 ) .

Distribution. Known only from type locality, Corumbá, state of Mato Grosso do Sul, Brazil ( Map 2 ).

Figures

MAP 2. Distribution of Hexapopha species.

FIGURES 12A–H. Hexapopha peba sp. nov., female (MPEG 37854; PBI_OON 45386). 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 13A–L. Hexapopha peba sp. nov., SEM images. A–H male (MPEG 37853; PBI_OON 45772). I–L female (MPEG 37853; PBI_OON 45386). A–B carapace. A lateral view. B ventral view. C sternum, detail of median projection (arrow). D–E mouthparts. D ventral view. E lateral view. F right palp, retrolateral view. G–H embolus. G ventral view. H retrolateral view (arrow: projection of conductor). I–J epigastric region. I ventral view. J lateral view (arrow: copulatory opening). K internal genitalia, dorsal view. L detail of K, showing genital duct. Abbreviations: d, duct; P, projection; sc, postepigastric scape.

FIGURES 15A–H. Hexapopha harveyi sp. nov., female (MPEG 15331; PBI_OON 46033). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F spinnerets, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 16A–L. Hexapopha harveyi sp. nov., SEM images. A–G male (MPEG 37880; PBI_OON 46845). H–L female (PBI_OON 46058). A carapace, ventral view. B mouthparts, ventral view. C right endite, detail of projections. D detail of projection P1 of endites. E–F embolus. E prolateral view. F retrolateral view. G left palp, retrolateral view. H abdomen, ventral view (arrow: epigastric scutum). I detail of H, showing postepigastric scape. J epigastric region, ventral view. K internal genitalia, dorsal view. L detail of K, showing anterior sclerite. Abbreviations: as, anterior sclerite; mp, median projection; P, projection; sc, postepigastric scape; vs, ventral surface of distal hook of posterior sclerite.

FIGURES 17A–I. Hexapopha fannesi sp. nov., male (holotype) (MPEG 37770; PBI_OON 45692). 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 18A–I. Hexapopha fannesi sp. nov., male, SEM images (MPEG 10860; PBI_OON 45340). A–B carapace. A lateral view. B ventral view. C mouthparts, ventral view. D endites, lateral view. E detail of D, showing projection P1. F–G left palp. F prolateral view. G retrolateral view. H–I embolus. H prolateral view. I retrolateral view. Abbreviations: la, labium; mp, median projection; P, projection.

FIGURES 19A–I. Hexapopha erebai sp. nov., male (MPEG 10912; PBI_OON 45898). 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 20A–L. Hexapopha erebai sp. nov., male, SEM images (MPEG 10911; PBI_OON 45821). A–B carapace. A anterior view. B ventral view. C mouthparts, ventral view. D chelicerae, anterior view. E abdomen, ventral view. F sperm pore, ventral view. G prosoma pedicelar region, detail of process (arrow). H–I left palp. H prolateral view. I retrolateral view. J–K embolus. J prolateral view. K retrolateral view. L trichobothrial base, metatarsus III, dorsal view. Abbreviations: mp, median projection; P, projection.

FIGURES 21A–I. Hexapopha periclitata sp. nov., male (IBSP 69641; PBI_OON 52517). 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 22A–H. Hexapopha periclitata sp. nov., female (IBSP 69699; PBI_OON 52565). 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 23A–L. Hexapopha periclitata sp. nov., SEM images. A–H male (IBSP 69641; PBI_OON 52517). I–L female (IBSP 69699; PBI_OON 52565). A carapace, ventral view (arrow: process of prosoma pedicelar region). B mouthparts, ventral view. C–D endites. C lateral view. D ventral view, detail of projection P2. E–F left palp. E prolateral view. F retrolateral view. G–H embolus. G prolateral view. H retrolateral view. I–J epigastric region. I ventral view (arrow: postepigastric scape). J posterior view, 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; P, projection; vs, ventral surface of distal hook of posterior sclerite.