Bulboctenus itunaitata, Pereira & Labarque & Polotow, 2020

Pereira, Maria Paula, Labarque, Facundo & Polotow, Daniele, 2020, Description of a new Neotropical spider genus in the family Ctenidae Keyserling 1877 (Araneae: Lycosoidea) from the Brazilian Amazon rainforest, Zootaxa 4890 (3), pp. 375-396: 383-387

publication ID

https://doi.org/10.11646/zootaxa.4890.3.5

publication LSID

lsid:zoobank.org:pub:7A820343-9165-4275-9963-DC6B27FCAD3B

persistent identifier

http://treatment.plazi.org/id/03BD297F-3E7A-3D3C-FF48-3DAB6EA85F93

treatment provided by

Plazi

scientific name

Bulboctenus itunaitata
status

sp. nov.

Bulboctenus itunaitata   sp. nov.

Figures 11–12 View FIGURE 11 View FIGURE 12 , 16 View FIGURE 16 , 19 View FIGURE 19

Type material. Male holotype from Vitória do Xingú [-2.88552, -52.01256], Pará, Brazil, non-flooded “terra firme” forests, 24.XI.2000, R. Santos & J. Dias coll., deposited in MPEG( ARA)526. GoogleMaps   Male paratype and two female paratypes from Castelo dos Sonhos (8.28361, -54.99861), Altamira, Pará, Brazil, 10.XI.2005, D.F. Candiani & D.R. Santos-Souza coll., deposited in MPEG( ARA)2419 GoogleMaps   .

Etymology. The species name is a contraction of “Ituna” and “Itatá” and honors an indigenous land from the state of Pará. The Ituna/Itata land is home to isolated indigenous peoples who have not established contact with foreigners until nowadays and gets its name because it is surrounded by the Ituna and Itatá rivers of the state of Pará.

Diagnosis. Males of Bulboctenus itunaitata   sp. nov. resemble those of B. munduruku   sp. nov. by the apical projections of the MA well differentiated and the RTA enlarged ( Figs 12 View FIGURE 12 A–C, 14A–C, 16A–C, 17A–C), but can be distinguished by the apical projection of the MA slightly curved anteriorly and pointing prolaterally ( Fig. 12B View FIGURE 12 ), while B. munduruku   sp. nov. presents the apical projection of the MA elongated, strongly curved anteriorly ( Fig. 14B View FIGURE 14 ). Females of Bulboctenus itunaitata   sp. nov. resemble those of B. munduruku   sp. nov. by having the copulatory ducts separated ( Figs 12 View FIGURE 12 D–E, 14D–E, 16D–E, 17D–E) but can be distinguished by the posterior lateral projections (PLP) of the MS distally rounded ( Figs 12D View FIGURE 12 , 16D View FIGURE 16 ), the copulatory ducts relatively close to each other ( Fig. 12E View FIGURE 12 ), and the lateral projections (LP) of the lateral sectors enlarged, and straight, while B. munduruku   sp. nov. presents the LP as wide as long, the copulatory ducts well separated and the PLP narrow and pointed ( Figs 14 View FIGURE 14 D–E, 17D–E).

Description. Male (MPEG(ARA)000526). Total length 7.22 ( Fig. 11A View FIGURE 11 ). Carapace 3.83 long and 2.96 wide. Clypeus 0.22 high. Eye diameters: AME 0.24, ALE 0.14, PME 0.29, PLE 0.27. Leg measurements: I: femur 3.14 / patella 1.40 / tibia 3.12 / metatarsus 2.62 / tarsus 1.21 / total 11.49; II: 3.12 / 1.33 / 2.80 / 2.54 / 1,12 / 10.91; III: 2.87 / 1.22 / 2.45 / 2.70 / 1.02 / 10.26; IV: 3.61 / 1.28 / 3.28 / 4.31 / 1.44 / 13.92. Leg formula 4123. Leg spination: tibiae I–II v2-2-2-2-2, r0, p0, III–IV v1-1-1-1-2, r1-1, p1-1; metatarsus I v2-2-2, r1, p1, II v2-2-2, r1-1, p1-1, III v11-1-1-2, r1-1-1, p1-1-1, IV v1-1-1-1-2, r1-1-1, p1-1-1. Palp ( Figs 12 View FIGURE 12 A–C, 16A–C): wide embolus, with rectangular base and rounded apex; median apophysis heavily excavated prolaterally and with a short apex, curved anteriorly and slightly pointed; conductor with narrow base and large apex, not covering the tip of the embolus.

Female (MPEG(ARA)002423). Total length 8.15 ( Fig. 11B View FIGURE 11 ). Carapace 3.74 long and 2.89 wide. Clypeus 0.22 high. Eye diameters: AME 0.20, ALE 0.14, PME 0.29, PLE 0.26. Leg measurements: I: femur 2.87 / patella 1.50 / tibia 2.90 / metatarsus 2.27 / tarsus 1.09 / total 10.63; II: 2.59 / 1.30 / 2.46 / 2.10 / 1.03 / 10.51; III: 2.50 / 2.26 / 1.96 / 2.28 / 0.96 / 9.96; IV: 3.30 / 1.30 / 2.81 / 3.80 / 1.40 / 12.61. Leg formula 4123. Leg spination: tibia I v2-22-2-2, r0, p0, II v2-2-2-2-2, r0, p1, III–IV v1-1-1-1 -2, r1-1, p1-1; metatarsus I, v2-2-2, r0, p0, II v2-2-2, r0, p1, III v1-1-1-1-2, r1-1, p1-1, IV v1-1-1- 1-1-2, r1-1, p1-1. Epigyne ( Figs 12 View FIGURE 12 D–E, 16D–E): hexagonal median sector with rounded posterior lateral projections; lateral projections straight, not covered by the elongated lateral sector; straight copulatory ducts; small fertilization ducts.

Variation. Two males: total length 6.51–7.22, carapace length 3.72–3.83, femur I 3.13–3.14. Five females: total length 7.90–8.72, carapace length 3.40–4.0, femur I 2.48–3.1.

Additional material examined. BRAZIL. Pará. Novo Progresso (-7.13527, -55.41416), 2 females, label missing date information, M.A. Ribeiro Junior coll. ( MPEG ( ARA)002423); GoogleMaps   Altamira (-8.32638, -55.14222), 1 female, 15.XI.2005, A. L. Tourinho coll. ( MPEG ( ARA)002421); same locality and data, 1 female, D. R. SantosSouza coll. ( MPEG ( ARA)002422); Altamira (-8.28361, -54.99861), 1 female, 10.XI.2005 GoogleMaps   GoogleMaps   , D. R. Santos-Souza coll. ( MPEG ( ARA)002424); same locality, 1 female, 12.X.2005 GoogleMaps   , D. F. Candiani coll. ( MPEG ( ARA)002420)   .

Distribution. Novo Progresso, Altamira and Vitória do Xingú, Pará, Brazil. ( Fig. 19 View FIGURE 19 ).

MPEG

Museu Paraense Emilio Goeldi

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Ctenidae

Genus

Bulboctenus