Xiruana tetraseta ( Mello-Leitão, 1939 ),

Oliveira, Luiz Fernando M. & Brescovit, Antonio D., 2015, A taxonomic revision of the Neotropical spider genus Xiruana Brescovit 1997 (Araneae: Anyphaenidae, Anyphaeninae), Zootaxa 3980 (2), pp. 201-229: 208-210

publication ID

http://dx.doi.org/10.11646/zootaxa.3980.2.3

publication LSID

lsid:zoobank.org:pub:13D14535-2FCD-4E8D-A8EC-01CC9D6F38CC

persistent identifier

http://treatment.plazi.org/id/03839756-FFFC-FFBA-FF23-F8CFFAC3F9C2

treatment provided by

Plazi

scientific name

Xiruana tetraseta ( Mello-Leitão, 1939 )
status

 

Xiruana tetraseta ( Mello-Leitão, 1939) 

Figs 5View FIGURE 5 A –H; 15 B

Teudis tetrasetus Mello-Leitão, 1939: 92  , figs 85, 86 (male lectotype and immature paralectotype, designated by Forcart 1961: 64, from Bemalcue, Paraguay, 1985, Dr C. Terntz leg., deposited in MHNB, 1221 a, examined). Xiruana tetraseta: Brescovit, 1997: 104  .

Diagnosis. Males of X. tetraseta  resemble those of X. silarae  n. sp. by the palp with a digitiform projection at the base of the embolus, but differs by having the median tibial apophysis extremely long and by the smooth border of the conductor of Anyphaeninae ( Figs 5View FIGURE 5 A, D –F). The females resemble those of X. pocone  n. sp. by the shape of the epigynal plate, but differs by the very wide median septum, with the lateral ends of the anterior border projecting on the atrium and internally with a transversal, anterior sclerotized handle ( Figs 5View FIGURE 5 G, H).

Description. Male ( MHNB 1221 a). Coloration as in X. hirsuta  . Total length 5.7, carapace length 2.75, width 2.05. Clypeus height 0.07. Eye diameters and interdistances: AME 0.16, ALE 0.15, PME 0.16, PLE 0.15; AME – AME 0.05, AME –ALE 0.05, PME –PME 0.15, PME –PLE 0.12, ALE –PLE 0.03. Chelicerae 1.2 long, with five promarginal teeth and six retromarginal denticles. Leg measurements: Leg I —femur 2.55 / patella 1.15 / tibia 2.65 / metatarsus 2.4 / tarsus 1.2 / total 9.95; II— 2.30 / 1.05 / 2.0/ 1.85 / 0.85 / 8.05; III— 1.85 / 0.85 / 1.3 / 1.5 / 0.6 / 6.1; IV— 2.65 / 1.0/ 2.1 / 2.8 / 0.75 / 9.3. Leg spination: I—tibia v 2 - 1 - 1, p 0-1 -0, r 0-1 -0, metatarsus v 2 - 2 - 2, p0, r0; II—tibia v 2 - 1 - 1, p0, r 0-1 -0, metatarsus v 1-2 - 2, p0; III—tibia v 1-2 - 2, metatarsus r 1 - 1 -0. Palp: retrolateral tibial apophysis with long, curved posterior branch of the retrolateral tibial apophysis and short, slender anterior branch of the prolateral tibial apophysis ( Figs 5View FIGURE 5 D –F); median apophysis not projected at base ( Figs 5View FIGURE 5 D –C). Abdomen: length 3.2, epigastric furrow 0.4 from tracheal spiracle, spiracle 1.5 from base of spinnerets.

Female ( IBSP 165975). Coloration as in male. Total length 7.5, carapace length 3.1, width 2.4. Clypeus height 0.12. Eye diameters and interdistances: AME 0.16, ALE 0.14, PME 0.14, PLE 0.14; AME –AME 0.06, AME –ALE 0.05, PME –PME 0.22, PME –PLE 0.1, ALE –PLE 0.02. Chelicerae 1.7 long, with four promarginal teeth and five retromarginal denticles. Leg measurements: Leg I—femur 2.6 / patella 1.2 / tibia 2.4 / metatarsus 2.2 / tarsus 1.0/ total 9.4; II— 2.4 / 1.2 / 2.1 / 2.0/ 0.9 / 8.6; III— 1.8 / 0.9 / 1.48 / 1.5 / 0.6 / 6.28; IV— 2.9 / 1.1 / 2.4 / 3.0/ 0.8 / 10.2. Leg spination: I—tibia v 2 - 2 -0, p0, r0, metatarsus v 2 -0-0, p0, r0; II—tibia v 2 - 2 -0, p0, r0, metatarsus v 2 -0-0, p0, r0; III—tibia v 1-2 - 2, p 0-1 - 1, r 0-1 - 1; IV—tibia v 1-2 - 2, p 0-1 - 1, r 0-1 - 1. Abdomen: length 4.3, epigastric furrow 0.7 from tracheal spiracle, spiracle 2.3 from base of spinnerets. Epigynum: spermathecae oval, fertilization ducts long, two times the length of spermathecae, seminal receptacles with short ducts, in the middle of the copulatory ducts ( Figs 5View FIGURE 5 G, H).

Variation. Males (n = 8): total length 4.2 –8.0; carapace 1.9–2.9; femur I 2.0–3.0. Females (n = 10): total length 5.5–10.2; carapace 2.4–3.6; femur I 1.8 –3.0.

Other material examined. VENEZUELA, Bolívar: 35 km SW Puerto Ordaz (8 °07’ 19 ”S; 63 ° 33 ’00”W), 1 ♂, 13.VII –02.VII. 1987, Peck leg., in Malaise ( AMNH). BRAZIL, Maranhão: Rio Maracaçume (02°02' 34 "S; 45 ° 57 ' 32 "W), Aldeia Maracaçume, 80 Km East of Canindé, Rio Gurupi, 4 ♂, 6 ♀, 22–23.V. 1963, B. Malkin leg. ( AMNH); Paraíba: Santa Terezinha, Km 23 (07°06' 57 "S; 37 ° 27 '07"W), 1 ♀, 29.III. 1978, P.F.L. Duarte leg. ( IBSP 165978); 1 ♀, 21.VIII. 1978, P.F.L. Duarte leg. ( IBSP 165975); Distrito Federal: Brasília (15 ° 47 'S; 47 ° 55 'W), Reserva do IBGE, Cerrado biome, 1 ♂ ( UNB 905); Mato Grosso: Chapada dos Guimarães (15 ° 27 ' 39 "S; 55 ° 45 '00"W), 3 ♂, 6 ♀, 5 #J, XI. 1963, M. Alvarenga leg. ( AMNH); Minas Gerais: Águas Vermelhas (15 ° 44 ' 49 "S; 41 ° 27 ' 36 "W), 1 ♂, 12.III. 1985, M. Renner leg. ( IBSP 166752); Lagoa Santa (19 ° 37 ' 45 "S; 43 ° 53 ' 23 "W), 1 ♀, 26.XI. 1960, A. Martina leg. ( MZSP 9794); São Paulo: Pirassununga (21 ° 59 ' 46 "S; 47 ° 25 ' 33 "W), 1 ♀, 5.II. 1949, O. Shubart leg. ( MZSP 9792); Rio Claro (22 ° 24 ' 39 "S; 47 ° 33 ' 39 "W), 1 ♀, 11.X. 2008, L.M. Stavale leg. ( IBSP 123746). PARAGUAY. Asunción: (25 ° 16 ' 55.91 "S; 57 ° 38 ' 6.36 W), Jardín Botánico, 1 ♂, K. Fiebrig leg. ( ZMB); 1 ♂, 1 #J, VII. 1961, N.L.H. Krauss leg. ( AMNH).

Distribution. Central Venezuela, Midwest and Southeast Brazil, Central and South Paraguay ( Fig. 15View FIGURE 15 B).

MHNB

Museum d'Histoire Naturelle de Bale

IBSP

Instituto Biologico de Sao Paulo

AMNH

American Museum of Natural History

UNB

Connell Memorial Herbarium, UNB Fredericton

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

ZMB

Museum für Naturkunde Berlin (Zoological Collections)

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Anyphaenidae

Genus

Xiruana

Loc

Xiruana tetraseta ( Mello-Leitão, 1939 )

Oliveira, Luiz Fernando M. & Brescovit, Antonio D. 2015
2015
Loc

Teudis tetrasetus Mello-Leitão, 1939 : 92

Brescovit 1997: 104
Forcart 1961: 64
Mello-Leitao 1939: 92
1961