Extraordinarius rickalleni, Rheims, 2019

Rheims, Cristina A., 2019, Extraordinarius gen. nov., a new genus of Sparianthinae spiders (Araneae: Sparassidae) from southeastern Brazil, Zootaxa 4674 (1), pp. 83-99 : 94-96

Extraordinarius rickalleni sp. nov.

http://zoobank.org/ E8A04833-025B-43BD-BBE7-54C47AA643BD

Figs 2, 5, 7, 9 , 50–65

Type material. Holotype: ♂ from Reserva Biológica Augusto Ruschi [19º53’S, 40º32’W], Santa Teresa, Espírito Santo, Brazil, April — August 2006, T. Souza, T. Bernabe & E. Soveiro leg. (IBSP 121338) . Paratypes: 1♀, same vial as holotype (IBSP 121338); 1♀, same collection data as holotype (IBSP 121533) ; 1♀, Reserva Florestal do Morro do Ariacanga (19º49’S, 40º19’W), Aracruz, Espírito Santo, Brazil, 14–16 October 2005 , T. Souza et al. leg. (IBSP 133442); 1♂, same collection locality as latter species, 22–27 April 2010, J.P.P. Pena Barbosa et al. leg. (IBSP 234651); 1♂, Parque Serra Santa Lucia [19º57’S, 40º32’W], Santa Teresa , Espírito Santo, Brazil, 13 August 2011 , J.P.P. Pena Barbosa et al. leg. (IBSP 234868).

Etymology. The species name honors Rick Allen, drummer for the British rock band Def Leppard, who lost an arm in a car accident but continues to play the drums with an especially adapted drum set; name in genitive case.

Diagnosis. Males of E. rickalleni sp. nov. are distinguished from all other congeners by the male palps with VTA rounded in ventral view, RTA single, tapering, four times longer than wide and retrolatero-distad in ventral view ( Figs 55 , 60 ) and MA three times longer than wide, medially curved in prolateral and retrolateral views ( Figs 54, 56 , 59, 61 ). Females are distinguished from all other congeners by the epigyne with median septum lacking anterior scape ( Figs 57 , 62 ).

Description. Male (holotype): Prosoma reddish brown with slightly darker fovea; eye borders black. Chelicerae reddish brown. Legs and pedipalps orange. Sternum orange with brown margins. Labium and endites brown, distally orange. Opisthosoma brownish gray; dorsally with brown pattern of spots anteriorly and laterally and median chevron-like marks down posterior half; ventrally mottled with few brown spots. Spinnerets pale brown ( Figs 5 0–51). Total length 9.7. Prosoma: 4.2 long, 3.6 wide. Opisthosoma: 5.5 long, 3.0 wide. Eye diameters: 0.30, 0.24, 0.20, 0.26; interdistances: 0.20, 0.06, 0.38, 0.36, 0.10, 0.06. Legs (4123): 11.8 (3.5, 2.1, 2.9, 2.5, 0.8); II: 11.6 (3.5, 2.1, 2.7, 2.5, 0.8); III: 9.6 (3.0, 1.6, 2.1, 2.1, 0.8); IV: 12.4 (3.7, 1.6, 2.7, 3.4, 1.0). Spination follows the generic pattern except femur III: r1-1-0; metatarsus I v2-1 p-0. VTA retrolaterally displaced; RTA medially bent in retrolateral view; MA arising from tegulum at 5:30 o’clock position; TBC cave-like; E arising from tegulum at 7 o’clock position ( Figs 54–56 , 59–61 ).

Female (IBSP 121338): Coloration pattern as in male, slightly lighter ( Figs 52–53 ). Total length 13.4. Prosoma: 4.9 long, 4.2 wide. Opisthosoma: 8.0 long, 4.9 wide. Eye diameters: 0.32, 0.28, 0.20, 0.26; interdistances: 0.24, 0.14, 0.46, 0.48, 0.18, 0.16. Legs (4213): I: 11.8 (3.5, 2.2, 2.9, 2.4, 0.8); II: 12.2 (4.1, 2.2, 2.8, 2.3, 0.8); III: 10.1 (3.3, 1.7, 2.1, 2.2, 0.8); IV: 13.0 (3.8, 1.7, 2.9, 3.4, 1.2). Spination follows the generic pattern. Epigyne: epigynal field wider than long; lateral lobes slightly converging anteriorly; median septum almost two times wider than long ( Figs 57 , 62 ). Vulva: double helix with 4–5 turns ( Figs 58 , 63–64 ).

Variation. Males (n = 3): total length 8.6–9.7; prosoma length 4.0–4.7; femur I length 3.4–3.5. Females (n = 3): total length 13.4–14.3; prosoma length 4.9–5.3; femur I length 3.5–3.9.

Distribution. Known from the state of Espírito Santo, Brazil ( Fig. 65 ).

Figures

FIGURE 65. Distribution map for species of Extraordinarius gen. nov.

FIGURES 1–9. E. andrematosi sp. nov. (1, 3, 6, 8 female IBSP 62064, 4 male IBSP 124323); E. rickalleni sp. nov. (2, 5 female IBSP 121533, 7, 9 male IBSP 121338).1 Female, left chelicerae, ventral view (arrow points to retrolateral escort setae); 2 Female, right endite, serrula, ventral view; 3 Female, left palp, claw, prolateral view; 4 Male, left leg I, metatarsus, trilobate membrane, dorsal view; 5 Female, left leg III, tarsus, tricobothria, dorsal view; 6 Female, left leg I, tarsus, tarsal organ, dorsal view; 7 Male, left leg II, tarsal claws, prolateral view; 8 Female, left leg III, tarsal claws, prolateral view; 9 Male, epiandrium, ventral view (arrow points to epiandrous spigots). DP = distal plate; PP = proximal plate.

FIGURES 50–53. E. rickalleni sp. nov., habitus 50–51 Male, holotype (IBSP 121338) (50 dorsal, 51 ventral); female, paratype (IBSP 121338) (52 dorsal, 53 ventral). Scale lines: 2 mm.

FIGURES 54–58. E. rickalleni sp. nov. 54–56 Male, holotype (IBSP 121338), left palp (54 prolateral, 55 ventral, 56 retrolateral); 57–58 female, paratype (IBSP 121338) (57 epigyne, 58 vulva). Scale lines: 1 mm.

FIGURES 59–64. E. rickalleni sp. nov. 59–61 Male, holotype (IBSP 121338), left palp (59 prolateral, 60 ventral, 61 retrolateral); 62–64 Female, paratype (IBSP 121553) (62 epigyne, 63 vulva, 64 schematic course of internal duct system. Scale lines: 1 mm.