Hexapopha peba, 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 : 24-26

Hexapopha peba sp. nov.

Figs 11–13 ; Map 2

Type material. Holotype: male from Serra Leste , Curionópolis, Pará, Brazil (05º57’17.8”S, 49º37’00.4”W), Nov. 30, 2016, E.Z. Albuquerque & M.G.T. Monteiro leg., deposited in MPEG 37856, PBI_OON 46096 . Paratypes: Palmares , Parauapebas, Pará, Brazil (05°57’04.3”S 49°50’13.0”W) MPEG team leg., 1♁ (MPEG 37853, PBI _ OON 45772 ); 2♀ (MPEG 37854, PBI _ OON 45386 ) .

Etymology. The specific name is a noun in apposition referring to Parauapebas, where the paratypes were collected, nicknamed Peba by its habitants.

Diagnosis. Males of this species resemble those of H. reimoseri , H. hone and H. osa by the presence of a proximal projection on the conductor ( Platnick et al. 2014: figs 21, 70, 105), differing by that structure being elongated, reaching half the length of the conductor ( Figs 13F, H ) (short, triangular in H. reimoseri , H. hone and H. osa ); they further differ from those of all other known species of the genus by the sclerotized projection in the middle of the sternum ( Figs 11D , 13C ). Females are similar to those of H. harveyi sp. nov. and H. periclitata sp. nov. by the postepigastric scape separated from the postepigastric plate but can be recognized by the unique tubelike shape of this structure ( Figs 12G–H , 13I–J ) (tongue-shaped in H. harveyi sp. nov. and H. periclitata sp. nov.).

Description. Male (PBI_OON 46096). Total length 1.34. CEPHALOTHORAX: Carapace pale orange, 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 11C , 13A ). Eyes ALE circular, PME oval, PLE oval; posterior eye row straight from both above and 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. 11E ). Sternum as long as wide, pale orange, median concavity absent, with radial furrows between coxae I–II, II–III, III–IV, furrow smooth, radial furrow opposite coxae III absent, surface smooth, without pits, microsculpture absent; spinelike projection in the middle of the sternum; prosoma pedicelar region with small process ( Figs 11D , 13B– C ). Mouthparts: Chelicerae distal region unmodified ( Fig. 11E ). Labium anterior margin anteriorly projecting at middle, wider than long ( Figs 13D–E ). Endites with a median projection (mp), a P1, P2 and a P3; mp short, directed anteriorly; P1 directed posteriorly, situated posteriorly to mp. P2 situated laterally to mp. P3 lamellar, situated laterally to P2 ( Figs 13D–E ). ABDOMEN: dorsum soft portions pale orange. Book lung covers small, round. 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 11A, F ). LEGS: yellow. GENITALIA: Epigastric region with sperm pore situated at level of anterior spiracles. Palp proximal segments yellow; embolus tip flattened, not bent upwards; conductor present, shorter than embolus, with tip flattened, with a conspicuous elongated proximal projection ( Figs 11F–H , 13F–H ).

Female (PBI_OON 45386). As in male except as noted. Total length 1.43. CEPHALOTHORAX: Carapace without any pattern, pars cephalica slightly elevated in lateral view ( Figs 12B–C ). Eyes PME circular; PME touching ( Fig. 12E ). Sternum longer than wide ( Fig. 12D ). Mouthparts: Chelicerae, endites and labium pale orange. Labium rectangular ( Figs 12D–E ). GENITALIA: Ventral view: postepigastric plate short; postepigastric scape present, tube-shaped, inserted posteriorly, separated from the postepigastric plate; copulatory opening slit-shaped, extending to posterior sclerite. Dorsal view: anterior genitalic process with straight arms; genital duct straight. ( Figs 11K–L , 13I–L ).

Other material examined. Brazil. Pará. Curionópolis: (06º13’47.1”S, 49º45’20.05”W) , Aug. 03–07, 2017, M.T.G. Tavares leg., 1♀ (MPEG 37855, PBI _ OON 52641 ) .

Distribution. Known from Curionópolis and Parauapebas, southeastern state of Pará, Brazil.

Figures

MAP 2. Distribution of Hexapopha species.

FIGURES 11A–I. Hexapopha peba sp. nov., male (MPEG 37853; PBI_OON 45772). 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 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.