Meri abuna, Rheims & Jäger, 2022

Rheims, Cristina A. & Jäger, Peter, 2022, Revalidation of the genus Sadala Simon, 1880 with the description of a new genus of Neotropical huntsman spiders (Araneae, Sparassidae), Zootaxa 5135 (1), pp. 1-80 : 33-36

publication ID

https://doi.org/10.11646/zootaxa.5135.1.1

publication LSID

lsid:zoobank.org:pub:0CC0D586-E099-4593-9032-EA1885F00F3B

DOI

https://doi.org/10.5281/zenodo.6820286

persistent identifier

https://treatment.plazi.org/id/039787EF-FF81-C92D-FF32-FAF2FA8EFDDA

treatment provided by

Plazi

scientific name

Meri abuna
status

spec. nov.

Meri abuna   spec. nov.

Figs 103–117 View FIGURES 103–106 View FIGURES 107–112 View FIGURES 113–117 , 317 View FIGURES 315–318

Type material. Holotype: BRAZIL: Rondônia: ♂, Porto Velho [‑8.7667, ‑63.9000], Abunã (transecto 9), 3 June 2011, R. Y. Lemos leg. ( MZSP 41395 View Materials ) GoogleMaps   . Paratypes: BRAZIL: Rondônia: 1♀, same locality as holotype, 2 September 2010, S. Outeda Jorge leg. ( MZSP 35006 View Materials ) GoogleMaps   ; 1♀, same locality as holotype, 3 September 2010, G. Perroni leg. ( MZSP 35102 View Materials ) GoogleMaps   ; 1♂, Caiçara (transecto 1), Porto Velho [‑8.7667, ‑63.9000], 26 August 2010, R. Y. Lemos leg. ( MZSP 34926 View Materials ) GoogleMaps   ; 1♀, Usina Hidrelétrica se Samuel, Rio Jamari [‑8.7500, ‑63.4500] December 1988, Equipe Butantan leg. ( IBSP 6618 View Materials ) GoogleMaps   ; Amazonas   : 1♀, Manaus, Reserva Florestal Adolpho Ducke [‑3.000, ‑59.8667], 11–21 October 2004, A. Henriques leg. ( INPA 1907 View Materials ) GoogleMaps   .

Additional material examined. ECUADOR: Orellana: 1♀, Tiputini Biodiversity Station, near Yasuni National Park (-0.6333, -76.1333), 4 July 1998, T GoogleMaps   . L. Erwin et al. leg. ( USNM)   ; 1♀, same locality as previous specimen, 22 October 1988, T   . L. Erwin et al. leg. ( USNM)   ; 1♀, Reserva Etnica Waorani, 1km S. Onkone Gare Camp (-0.9500, -76.2167), 1 October 1996, T GoogleMaps   . L. Erwin et al. leg. ( USNM)   . BRAZIL: Amazonas: 1♀, Tefé [‑3.3667, ‑64.7000], no date ( MNHN 2459 View Materials , syntype of S. keyserlingi   ) GoogleMaps   ; Rondônia: 1♀, Porto Velho [‑8.7667, ‑63.9000], 15 April 1996, Equipe IBSP / SMNK GoogleMaps   leg. ( IBSP 8701 View Materials )   ; 1♂, same locality as previous specimen, Caiçara (transecto 1), 15 November 2010, M.C. Silveira leg. ( MZSP 37821 View Materials )   ; 1♀, same locality as previous specimen, Caiçara (transecto 4), 25 August 2010, Equipe Jirau leg. ( MZSP 35445 View Materials )   ; 1♀, same locality as previous specimen, 21 November 2010, R   . B. Almeida leg. ( MZSP 35922 View Materials )   ; 1♀, same locality as previous specimen, Abunã (transecto 10), 8 March 2010, A. Pepato leg. ( MZSP 33026 View Materials )   ; 1♀, same locality as previous specimen Mutum (transecto 8), 31 August 2010, G. Perroni leg. ( MZSP 34908 View Materials )   . PERU: Huanuco: 1♂, A.C. P. Panguana   , Río Yuyapichis , 230 m (‑9.6167, ‑74.9333), 20 September–7 October 2013, S. Friedrich, F. Wachtel & E.-G. Burmeister leg. ( MUSM) GoogleMaps   .

Etymology. The specific name refers to the collection locality of the holotype, taken from the Tupi Guarani Language, meaning “to glide soundlessly”; noun in apposition.

Diagnosis. Males of M. abuna   spec. nov. resemble those of M. martinique   spec. nov. ( Figs 196–199 View FIGURES 196–202 ) by the palp with embolus bearing small, tubercle-like subdistal projection and large membranous area ( Fig. 106 View FIGURES 103–106 ). They are distinguished from the latter species by the PTA distally rounded, RTA gradually tappering and embolus bulging prolaterally at base ( Figs 103–105 View FIGURES 103–106 ) (PTA triangular, RTA abruptly narrowed medially and embolus without prolateral bulge at base in M. martinique   spec. nov.). Females resemble those of M. aparia   spec. nov. ( Figs 118–120 View FIGURES 118–123 ) by the epigyne with MS wider than long and EP rectangular or squared, and vulva with FW dilated, mediad. They are distinguished from the latter species by the EP wider than long or as wide as long ( Fig. 107, 110 View FIGURES 107–112 ) and vulva with GP postero laterad ( Fig. 108 View FIGURES 107–112 ) (EP longer than wide and GP antero-mediad in M. aparia   spec. nov.).

Description. Male (MZSP 34926, paratype): Total length 11.0. Prosoma: 5.5 long, 5.3 wide. Opisthosoma: 5.3 long, 3.7 wide. Eyes: diameters: 0.45, 0.39, 0.26, 0.35; interdistances: 0.31, 0.10, 0.50, 0.54, 0.33, 0.20. Legs: I: 30.4 (9.1, 3.2, 8.9, 9.1, 2.1); II: 34.7 (9.9, 3.3, 9.7, 9.8, 2.0); III: 24.2 (7.3, 2.4, 6.4, 6.3, 1.8); IV: 27.2 (7.9, 2.6, 7.1, 7.6, 2.0). Spination follows the generic pattern except tibia IV: d0; patella IV: p1, r1. Palp: PTA as long as wide; RTA triangular, as long as wide; cymbium with small retroproximal projection; subtegulum visible between 9 and 12 o’clock in ventral view; tegulum slightly protruding over conductor base; conductor widest at base, distally fanned; embolus gently curving subdistally ( Figs 103–106 View FIGURES 103–106 , 113–115 View FIGURES 113–117 ).

Female (IBSP 6618, paratype): Total length: 12.4. Prosoma: 5.4 long, 5.1 wide. Opisthosoma: 6.7 long, 3.4 wide. Eyes: diameters: 0.41, 0.35, 0.26, 0.35; interdistances: 0.32, 0.25, 0.62, 0.57, 0.33, 0.20. Legs: I: 23.0 (7.0, 2.7, 6.0, 5.7, 1.6): II: 24.4 (7.3, 2.9, 6.7, 6.1, 1.4); III: 17.9 (5.7, 2.3, 4.5, 4.1, 1.3); IV: 20.0 (6.1, 2.2, 5.1, 5.1, 1.5). Spination follows the generic pattern except patella II–III: p1. Epigyne: EF wider than long; MAB slightly conspicuous, embedded in EF; EP with anterior margin not reaching half MS length; LL touching posteriorly ( Fig. 107 View FIGURES 107–112 ). Vulva: GP longer than wide, arising from ducts at first turn; SP ovoid; FD anteriad ( Figs 107–109 View FIGURES 107–112 ).

Variation. Males (n = 4): total length 9.4–12.7; prosoma length 4.5–5.6; femur I length 7.4–9.1. Females (n = 10): total length 12.4–19.2; prosoma length 4.9–6.6; femur I length 6.0–8.0. Coloration pattern in females can be generally darker. Epigyne can have MS more V-shaped with EP slightly anterior to MS posterior margin ( Figs 110 View FIGURES 107–112 , 116 View FIGURES 113–117 ) and vulva can have SP more elongated oval ( Figs 111 View FIGURES 107–112 , 117 View FIGURES 113–117 ).

Distribution. Known from northwestern South America, in Ecuador, Peru and Brazil ( Fig. 317 View FIGURES 315–318 ).

R

Departamento de Geologia, Universidad de Chile

T

Tavera, Department of Geology and Geophysics

USNM

Smithsonian Institution, National Museum of Natural History

IBSP

Instituto Biologico de Sao Paulo

SMNK

Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Meri