Sparianthis megalopalpa ( Caporiacco, 1954 ),

Rheims, Cristina A., 2020, Revision of the spider genus Sparianthis Simon, 1880 (Araneae, Sparassidae Sparianthinae), Zootaxa 4890 (2), pp. 151-191: 181-182

publication ID

https://doi.org/10.11646/zootaxa.4890.2.1

publication LSID

lsid:zoobank.org:pub:5EF7FF4A-0857-415F-B30F-DA2910F5B6EB

DOI

http://doi.org/10.5281/zenodo.4333406

persistent identifier

http://treatment.plazi.org/id/4E338797-873E-FFEE-D8E9-7D51FBB4FF8C

treatment provided by

Plazi

scientific name

Sparianthis megalopalpa ( Caporiacco, 1954 )
status

comb. nov.

Sparianthis megalopalpa ( Caporiacco, 1954)  comb. nov.

Figs 109–116View FIGURES 109–113View FIGURES 114–116, 143View FIGURES 143–144

Pseudosparianthis megalopalpus Caporiacco, 1954: 127  , figs 34, 34a

(Holotype ³, French Guyana, Lower Oyapock River, 1900, Geay leg., MNHN, not located, not examined). World Spider Catalog 2020. 

Additional material examined. ECUADOR: Orellana: 1³, Tiputini Biodiversity Station, near Yasuni National Park ( Erwin Transect T/1 Sta. 1) (-0.6319, -76.1442), 22 October 1998, TGoogleMaps  . L. Erwin et al. leg. ( USNM); 1³, same locality as previous specimen, 21 October 1998, same collector as previous specimen ( USNM); 1³, same locality as previous specimen, 7 February 1999, same collector as previous specimen ( USNM); 1³, Reserva Etnica Waorani ( Transect Ent. 1km S Onkone Camp, 216.3 m) (-0.6571, -76.4530), 3 October 1996, TGoogleMaps  . L. Erwin et al. leg. ( USNM); 1³, same locality as previous specimen, 4 October 1996, same collector as previous specimen ( USNM)GoogleMaps  . FRENCH GUIANA: Cayenne: 1³, Kourou, Piste de Compagnons [5.1167, -52.7000], 2009-2011, V. Vedel leg. ( MNHN)GoogleMaps  .

Diagnosis. Males of S. megalopalpa  resemble those of S. boraris  sp. nov. by the palp with mRTA as large as vRTA and larger than dRTA ( Figs 28View FIGURES 26–31, 116View FIGURES 114–116). They are distinguished from the latter species by vRTA single branched, conical and mRTA bifid, with two truncated branches in retrolateral view (vRTA bifid, with one branch short and blunt and the other longer and conical, and mRTA long, pointed in ventral view and rectangular in retrolateral view in S. boraris  sp. nov.) ( Figs 115–116View FIGURES 114–116). They are additionally distinguished from all species of the genus in having a TBE with apical projection long, cylindrical, widening at tip, and with sub-apical prong-like projection ( Figs 115–116View FIGURES 114–116).

Redescription. Male (USNM): Coloration generally brown. Prosoma brown, darker at eye area; fovea dark brown; eye borders black. Chelicerae, legs and pedipalps lighter than prosoma. Labium and endites pale brown, distally lighter. Sternum pale brown with slightly darker margins. Opisthosoma pale gray, with no distinct pattern; ventral muscle sigilla inconspicuous ( Figs 109–110View FIGURES 109–113). Total length: 6.7. Prosoma: 2.7 long, 2.5 wide. Opisthosoma: 3.7 long, 1.6 wide. Eyes: diameters: 0.20, 0.14, 0.10, 0.16; interdistances: 0.12, 0.02, 0.26, 0.18, 0.10, 0.04. Legs (2143): I: 17.5 (5.0, 2.2, 4.6, 4.6, 1.1); II: 18.4 (5.5, 2.2, 4.8, 4.7, 1.2); III: 14.3 (4.3, 1.7, 3.5, 3.8, 1.0); IV: 16.6 (4.7, 1.6, 3.9, 4.9, 1.5). Spination follows the generic pattern, except tibia I: p1-0-0; d0; v3-2-2; tibia II: d0, v3-2-2; tibiae III–IV: d0-0-1; metatarsi I–II: v2-2-2. Metatarsus III–IV with ventral distal preening combs. Palp: tibia with prolateral spines long; tegulum retro-proximally indented, without retro-proximal protrusion; TBC keel-like, retrolateral part protruding distally; embolus slender, bent retrolaterally at distal margin of alveolus ( Figs 111–116View FIGURES 109–113View FIGURES 114–116).

Female: unknown.

Variation. Males (n = 5): total length 6.3–7.2; prosoma length: 2.5–2.9; femur I length 2.8–3.1.

Distribution. Known from eastern Ecuador and French Guiana ( Fig. 143View FIGURES 143–144).

MNHN

France, Paris, Museum National d'Histoire Naturelle

T

Tavera, Department of Geology and Geophysics

USNM

Smithsonian Institution, National Museum of Natural History

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Sparianthis

Loc

Sparianthis megalopalpa ( Caporiacco, 1954 )

Rheims, Cristina A. 2020
2020
Loc

Pseudosparianthis megalopalpus

Caporiacco, L. di 1954: 127
1954