Extraordinarius angusyoungi, Rheims, 2022

Rheims, Cristina A., 2022, New species and records of the genus Extraordinarius Rheims, 2019 (Araneae Sparassidae: Sparianthinae), Zootaxa 5205 (2), pp. 190-200 : 195-196

Extraordinarius angusyoungi spec. nov.

Figs 17−23

Type material. Holotype: BRAZIL: Rio de Janeiro: ♀, Fazenda Ranchinho da Roça, Petrópolis [‑22.4500, ‑43.2000], 15−16 August 2001, Equipe Biota leg. ( IBSP 43247 ).

Etymology. The species name honors Angus Young, lead guitarist, songwriter and co-founder of the Australian rock band AC/DC. He is best known for his stage schoolboy uniform outfits and energetic performances; name in genitive case.

Diagnosis. Females of E. angusyoungi spec. nov. resemble those of E. rickalleni ( Rheims 2019: figs 62−64) and E. alicecooperi spec. nov. ( Figs 14−16 ) by the epigyne with MS lacking anterior scape, but are distinguished by the rectangular shape of the MS (inverted T-shaped in E. alicecooperi spec. nov. and ovoid in E. rickalleni ) and by the vulva with packed structures running almost parallel to each other (strongly converging towards each other in both other species) ( Figs 21−23 ).

Description. Female (holotype): Prosoma brown; fovea very slightly darker than prosoma; eye borders black. Chelicerae brown. Legs and palps orange brown, lighter than prosoma. Labium and endites brown, distally pale brownish cream colored. Sternum orange brown with brown margins. Opisthosoma brownish gray; dorsally with brown pattern of irregular shaped marks on anterior half and laterally, and five median chevron-like marks down posterior half; ventrally with few scattered brown spots laterally and median U‑shaped line of muscle impressions. Spinnerets orange brown, distally yellowish brown ( Figs 17−18 ). Total length 14.5. Prosoma 5.8 long, 5.0 wide. Opisthosoma 8.2 long, 5.0 wide. Eyes: diameters: 0.34, 0.30, 0.21, 0.30; interdistances: 0.35, 0.32, 0.58, 0.58, 0.25, 0.15. Legs (4213): I: 13.4 (4.0, 2.5, 3.3, 2.7, 0.9); II: 13.5 (4.2, 2.6, 3.2, 2.6, 0.9); III: 11.1 (3.5, 2.0, 2.4, 2.3, 0.9); IV: 14.3 (4.2, 1.9, 3.2, 3.8, 1.2). Epigyne: EF slightly wider than long; LL with lateral groves strongly diverging anteriorly; MS roughly one and a half times wider than long ( Figs 19 , 21 ). Vulva: double helix with 9−10 twists; FD antero‑laterad ( Figs 20 , 22−23 ).

Male: unknown.

Distribution. Only known from the type locality, in Rio de Janeiro, southeastern Brazil ( Fig. 31 ).

Figures

FIGURE 31. Distribution map for all known species of Extraordinarius Rheims, 2019. Doubtful record for E. alicecooperi spec. nov. is marked with a “?”.

FIGURES 17−20. Extraordinarius angusyoungi spec. nov., female (holotype). 17−18 Habitus (17 dorsal, 18 ventral); 19−20 epigyne/vulva (19 ventral, 20 dorsal). Scale lines: 17−18: 2 mm, 19−20: 1 mm.

FIGURES 21−26. 21−23 Extraordinarius angusyoungi spec. nov., female (holotype). Epigyne/vulva (21 ventral, 22 dorsal, 23 schematic course of internal duct system). 24−26 Extraordinarius klausmeinei Rheims, 2019, female (IBSP 249601). Epigyne/ vulva (24ventral, 25 dorsal, 26 schematic course of internal duct system). Sc—anterior scape. Scale lines: 1 mm.

FIGURES 11−16. Extraordinarius alicecooperi spec. nov. 11−13 Male (holotype), left palp (11 prolateral, 12 ventral, 13 retrolateral); 14−16 Female (paratype), epigyne/vulva (14 ventral, 15 dorsal, 16 schematic course of internal duct system). C—conductor; CO—copulatory opening; E—embolus; FD—fertilization duct; LL—lateral lobe; MA—median apophysis; MS—median septum; RbP—retrobasal cymbial projection; RTA—retrolateral tibial apophysis; TBC—tegular projection close to conductor base; TBE—tegular projection close to embolus base; VTA—ventral tibial apophysis. Scale lines: 1 mm.