Eutichurus nancyae Bonaldo & Saturnino, 2018

Bonaldo, Alexandre B., Lise, Arno A., Ramírez, Martín J. & Saturnino, Regiane, 2018, Revisiting the spider genus Eutichurus Simon, 1897 (Araneae, Eutichuridae): new species and complementary descriptions, Zootaxa 4382 (2), pp. 321-346 : 335-341

publication ID

https://doi.org/10.11646/zootaxa.4382.2.6

publication LSID

lsid:zoobank.org:pub:53C1FBC6-8A60-4C58-A8B9-47311BE186D1

DOI

http://doi.org/10.5281/zenodo.5979826

persistent identifier

https://treatment.plazi.org/id/03D487C3-650F-1E06-94EC-F966FD2C4461

treatment provided by

Plazi

scientific name

Eutichurus nancyae Bonaldo & Saturnino
status

new species

Eutichurus nancyae Bonaldo & Saturnino   , new species

Figs 58 View FIGURES 58 ̄62, Map 1

Type material. Male holotype ( MPEG 21914 View Materials ) from Brazil, Pará, Juruti, Várzea do Piranha , 02°12'36.1"S 56°07'20.7"W, 22.II.2011, N GoogleMaps   . F. Lo Man Hung leg. Paratypes: female ( MPEG 21915 View Materials ), same locality GoogleMaps   , 4.VIII.2010, N. Abrahim leg.; male ( MPEG 21916 View Materials ), same locality GoogleMaps   , 25.II.2011, N.F. Lo Man Hung leg.; male ( MPEG 21917 View Materials ), Belém, Universidade Federal do Pará, Mata do Betina , 01°28'S 48°27'W GoogleMaps   , 12.IV.2007, D. F. Candiani leg.; female ( MPEG 21918 View Materials ), same data GoogleMaps   ; female ( MPEG 21919 View Materials ), same locality and collector, 10.IV.2007 GoogleMaps   ; Ilha de Cotijuba , [01°13'60”S 48°33'3”W], female ( MPEG 4714 View Materials ), XI.2004, D   . R. Santos-Souza leg.; female ( MPEG 21920 View Materials ), Santarém, Alter do Chão , [02°30'19.00” S 54°57'8.00”W], 27.IV.2007, B GoogleMaps   . J.F. Silva leg.; male ( MCN 25014 View Materials ), same locality GoogleMaps   , 26.I.1994, H. Höfer leg.; male ( MPEG 21921 View Materials ), same locality, Fragmento São Luís GoogleMaps   , 2.VII.2007; male (MPEG 925), Melgaço, Estação Científica Ferreira Penna, Floresta Nacional de Caxiuanã, 01°44'18.02"S 51°27'48.01"W, 14.VII.2002, C. Pereira leg.; female ( MZSP 10734 View Materials ), Barreirinhas [02°32'53.00” S 54°05'9.00”W], Rio Tapajós GoogleMaps   , 24.XI.1970, EPA leg.

Etymology. The specific name is a patronym in honour of arachnologist Nancy França Lo Man Hung, one of the collectors of the types.

Diagnosis. Males of E. nancyae   n. sp. resemble those of E. ravidus   and E. itamaraju   by the wide, subrectangular embolus and by the simple MA without median prong ( Bonaldo 1994: figs 65, 70). They differ from both species by the simple, undivided RTA, with small ventral, proximal lamellae ( Figs 58 View FIGURES 58 , 60). Females share with those of E. itamaraju   the epigynal anterior projections extremely reduced ( Bonaldo 1994: fig. 73) but are promptly recognized by the median field wider than long and by the posterior plates medially constricted (Fig. 61).

Description. Male (Holotype). Colour in ethanol: carapace pale yellow, thoracic groove mark darker. Chelicerae, endites and labium brownish red. Sternum yellow with brown margins. Legs and abdomen pale yellow. Chelicerae with 4 promarginal teeth, the third the largest, and 4 retromarginal teeth, contiguous. Tarsi I–IV and metatarsi III–IV with moderate scopulae. Total length 8.9. Carapace 4.0 long, 3.0 wide. Eye diameters: AME 0.25, ALE 0.25, PME 0.22, PLE 0.23. Eye interdistances: AME–AME 0.22, AME–ALE 0.23, PME–PME 0.35, PME– PLE 0.33, AME–PME 0.21, ALE–PLE 0.04, clypeus AME 0.08, clypeus ALE 0.12. Leg and palp measurements: palp 4.8 (1.7, 0.6, 1.0, -, 1.5); leg I 17.8 (4.7, 1.6, 4.7, 5.0, 1.8); leg II 17.5 (4.7, 1.5, 4.6, 5.0, 1.7); leg III 13.6 (3.9, 1.4, 3.2, 3.7, 1.4); leg IV 16.3 (4.5, 1.4, 3.9, 4.9, 1.6). Leg formula I-II-IV-III. Spination: palpal femur: d 0-1-1, p 0- 0-1; tibia p 2-1. Legs. I femur d 1-1-0, p 0-d1-d2, r 0-d1-d1; tibia d 0, p 1-1, r 0, v 2 -p1-2-r1-p1-2 (v 2 p1-2r1-p12); metatarsus d 0, p 0, r 0, v 2 -r1-2-p1-1 (2-r12-p1ap1). II femur d 1-0-0, p 0-d1-d1, r 0-d1-d1; tibia d 0, p 1-1, r 0, v 2-2 -2; metatarsus d 0, p 0, r 0, v 2-2 -1. III—femur d 1-0-0, p 0-d1-d1, r 0-d1-d2; tibia d 0, p 1-1, r 1-1, v p1-2-2; metatarsus d p1r1-p1r1-p1r1, p 0-0-1, r 0-0-1, v 2-2 -1. IV—femur d 1-1-0, p 0-d2-d1, r 0-d1-d2; tibia d 0, p 1-3, r 1-0, v 2-2 -2-2-2; metatarsus d p1r1-p2-p1r1, p 0-0-1, r 0-0-1, v r1-2-2-2-r1-1 (r12-4r1-ap1). Palp: tibia slender, almost the same length of cymbium; RTA unbranched, relatively long and thin, with a basal, ventral lamellae. MA apically placed, without median prong; conductor hyaline; embolus inserted medially, wide, short, with large prolateral process and pars pendula ( Figs 58 View FIGURES 58 ̄60).

Female (Paratype, MPEG 21915). Colour in ethanol: dark yellow orange, thoracic groove mark orange. Chelicerae, endites and labium brownish red. Sternum orange with brown margins. Legs yellow, tibia and metatarsi orange. Abdomen pale yellow. Chelicerae with 5 promarginal teeth, the fourth the largest, and 4 retromarginal teeth, contiguous. Tarsi I–IV and metatarsi I–II with dense scopulae; metatarsi III–IV with moderate scopulae. Total length 14.0. Carapace 5.3 long, 4.0 wide. Eye diameters: AME 0.31, ALE 0.28, PME 0.25, PLE 0.30. Eye interdistances: AME–AME 0.39, AME–ALE 0.43, PME–PME 0.57, PME–PLE 0.56, AME–PME 0.36, ALE–PLE 0.13, clypeus AME 0.17, clypeus ALE 0.15. Leg and palp measurements: palp 5.6 (2.0, 0.7, 1.3, -, 1.6); leg I 18.4 (4.9, 2.0, 4.6, 5.1, 1.8); leg II 18.0 (4.9, 2.0, 4.5, 4.9, 1.7); leg III 14.2 (4.3, 1.7, 3.1, 3.7, 1.4); leg IV 17.8 (4.9, 1.7, 4.1, 5.3, 1.8). Leg formula I-II-IV-III. Spination: palp femur: d 0-1-1; tibia p 1-1, tarsus 1-1. Leg. I femur d 1-0-0, p 0-0-1, r 0; tibia d 0, p 0, r 0, v p1-2-0; metatarsus d 0, p 0, r 0, v 2 -0-1. II—femur d 1-0-0, p 0-d1-d1, r 0; tibia d 0, p 0, r 0, v 0-p1-0; metatarsus d 0, p 0, r 0, v 2 -p1-1. III—femur d 1-0-0, p 0-d1-d1, r 0-d1-d2; tibia d 0, p 1-1, r 1-1, v p1-p1-0; metatarsus d p1r1-r1-p1r1, p 0-0-1, r 0-0-1, v 2-2 -1. IV—femur d 1-0-0, p 0-d1-d1, r 0-0-d2; tibia d 0, p 1-1, r 1-1, v p1-2-r1; metatarsus d p1r1-p1r1-p1r1, p 0-0-1, r 0-0-1, v 2-2 -1. Epigynum: median field wider than long; anterior projections extremely reduced, inconspicuous; posterior plates separated medially, both anterior and posterior margins constricted medially; primary spermathecae inconspicuous, with large fertilization ducts; copulatory ducts wide, globose; secondary spermathecae small, globose (Figs 61, 62).

Distribution. Eastern Brazilian Amazonia (Map 1).

Other material examined. BRAZIL. Pará: Juruti , várzea do Rio Amazonas, 02°24'20.7''S 56°26'00.3''W, 2 females ( MPEG 21922 View Materials ; MPEG 21923 View Materials ), 18.IX.2002, A.B. Bonaldo leg. GoogleMaps   ; 02°12'36.1"S 56°07'20.7"W, 1 male (MPEG 21924), 22.II.2011, N.F. Lo Man Hung leg.; 02°12'39.2" S 56°07'12.7" W, 1 male ( MPEG 21925 View Materials ), 24.VIII.2011, N.C. Bastos leg.; Santarém, Alter do Chão [02°30'19.00” S 54°57'8.00”W], 1 female ( MPEG 21926 View Materials ), 18.VI.2007, M.L.N. Sirotheau leg. GoogleMaps  

MAP 1. Distribution records of species of Eutichurus   .

MCN

McNeese State University

MPEG

Museu Paraense Emilio Goeldi

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Miturgidae

Genus

Eutichurus