Metalibitia paraguayensis ( Sørensen, 1884 ),

Coronato-Ribeiro, Amanda & Pinto-Da-Rocha, Ricardo, 2017, Taxonomic revision and cladistic analysis of the genus Metalibitia Roewer, 1912 (Opiliones, Cosmetidae, Cosmetinae), Zootaxa 4291 (2), pp. 201-242: 221-224

publication ID

https://doi.org/10.11646/zootaxa.4291.2.1

publication LSID

lsid:zoobank.org:pub:3A891AA8-9D85-47AD-9201-A37D24D32717

persistent identifier

http://treatment.plazi.org/id/038787D1-FFF8-FFE4-EDAE-FA74FF626227

treatment provided by

Plazi

scientific name

Metalibitia paraguayensis ( Sørensen, 1884 )
status

 

Metalibitia paraguayensis ( Sørensen, 1884) 

( Figs. 2View FIGURE 2 A, F; 3D; 6A, F; 8A, F; 12A –C)

Cosmetus paraguayensis Sørensen, 1884: 594  [desc]

Cosmetus Paraguayensis  : Sørensen, 1895: 1 [cit]

Metalibitia paraguayensis: Roewer, 1912: 13  [redesc, syst], figs 1–2; 1923: 294 [cit], figs 314–315; 1925: 2 [cit]; Mello-Leitão, 1931: 83 [cit]; 1932: 56 [cit], fig 42; 1933: 109 [syst]; Sørensen, 1932: 413 [key], fig. 29; Canals, 1936: 61 [cit]; Roewer, 1938: 5 [cit]; B. Soares, 1945: 343 [cit]; Ringuelet, 1959: 421 [rdesc], fig. 61; 1963: 49 [rdesc, key]; H. Soares, 1966b: 125 [cit]; Capocasale, 1966: 632 [cit]; 1968: 70 [cit]; Moritz, 1971: 207 [cit]; Soares & Soares, 1985: 4 [cit]; 1987: 2 [syst]; Acosta, 1993: 14 [cit]; 2002: 75 [cit]; Acosta & Rosso de Ferradás 1996: 78 [cit]; Capocasale & Gudynas, 1993: 7 [cit]; Kury, 2003: 69 [cat]; Pinto-da-Rocha et. al., 2014: 522 [cit]; Simó et al. 2014: 2 [cit]; Kury & Villarreal, 2015: 4, 21 [cit].

Libitia (Messa) paraguayensis: Sørensen, 1932: 413  [syst], fig. 29.

Metalibitia tucumana H. Soares, 1966b: 125  [desc], fig. 1. Synonymy established by Soares & Soares (1987).

Type material. Cosmetus paraguayensis  : ZMUC, ZMB 8394, NHMW syntypes, not examined. SMF 5004/157 1♂ 2♀ syntypes examined. M. tucumana  HEMS 63, ♂ holotype examined.

Type locality. C. paraguayensis  , PARAGUAY, Monte Rita (currently Pilar, Ñeembucú Department); M. tucumana  , ARGENTINA  , Tucumán Province, San Miguel de Tucumán.

Geographical distribution ( Fig. 14View FIGURE 14) according to studied localities: BRAZIL, Mato Grosso state  ; BOLIVIA, Santa Cruz  ; northern ARGENTINA  , Tucuman Province (Sierra de Medina, San Pedro de Colalao, road to TaFi del Valle), Santa Fé, Córdoba, Buenos Aires  ; southern PARAGUAY, Department Ñeembucú (Pilar). 

Diagnosis. Resembles M. brasiliensis  in having two tubercles on anterior lateral oF dorsal scutum, near paracheliceral projections ( Figs 1View FIGURE 1 D; 2A); similar sized tubercles on Free tergites ( Figs 1View FIGURE 1 D; 2A); Femur IV unarmed ( Figs 5View FIGURE 5 D; 6A). Distinguished From this species by the retrolateral group oF tubercles on apical region oF trochanter IV ( Fig. 6View FIGURE 6 F) ( M. brasiliensis  has this group oF tubercles displaced to the middle, Fig. 5View FIGURE 5 H), coxa III with prolateral tubercle ( Fig. 2View FIGURE 2 A) (absent in M. brasiliensis  , Fig. 1View FIGURE 1 D), and tibia IV with small tubercles ( Fig. 8View FIGURE 8 F) ( M. brasiliensis  has a ventral row oF tubercles, Fig. 7View FIGURE 7 H).

Redescription. Male (MACN 27632)

Measurements ( SMF 5004/ 157 paratype): dorsal scutum, total length 4.1; dorsal scutum, total width 4.0; prosoma length 1.3; prosoma width 2.0; Femur I length 2.1; Femur II length 3.8; Femur III length 3.2; Femur IV length 3.9; pedipalpal Femur length 0.8 mm.

Coloration in ethanol: Entirely pale brown.

Dorsum ( Fig. 2View FIGURE 2 A, F): Anterior margin oF dorsal scutum with median portion smooth, with two high tubercles with pointed apex near paracheliceral projections. Lateral margins oF dorsal scutum with rounded tubercles near areas I –IV. Domed ocularium without median depression and with Four small tubercles near the eyes. Posterior margin oF dorsal scutum with a row oF 15 tubercles. Free tergite I with row oF 17 tubercles, II with row oF 15 tubercles, III with row oF 12 tubercles. Posterior margin oF dorsal scutum and Free tergite I with median region smooth. Anal operculum with 22 tubercles irregularly distributed. All tubercles oF posterior margin oF dorsal scutum, Free tergites and anal operculum with rounded apex.

Chelicera ( Fig. 2View FIGURE 2 A): Bulla with Four –Five proximal tubercles, tubercles on lateral borders, two proapical tubercles Fused at base, more evident on the leFt chelicerae than the right. Segments II and III with Four teeth.

Pedipalps ( MACN 30705) ( Fig. 3View FIGURE 3 D): Trochanter with two ventral setiFerous tubercles united at the base. Femur with seven dorsal setiFerous tubercles united at their base, ten setiFerous dorsal prolateral tubercles, nine setiFerous ventral rounded tubercles, and two ventroapical tubercles. Tibia with rounded projection on the distal halF; presence oF dorsal, lateral and ventral setae, and one dorsoapical tubercle on each side. Tarsus triangular, with dorsal macrosetae, lateral ventral rows oF spines, three apical retrolateral macrosetae, the spine displaced apically, smaller than other and Four macrosetae spines, one basal and three median apical.

Legs ( Figs 2View FIGURE 2 A; 6A, F; 8A, F): Coxa I with one retrolateral tubercle. Coxa II with one retrolateral apical tubercle. Coxa III with one prolateral tubercle and one small retrolateral tubercle contiguous to coxa IV. Coxa IV with only apex visible in dorsal view, tuberculated and with one prolateral apophysis. Trochanter IV with Four retrolateral tubercles, Four retrolateral tubercles united at base on distal region, the subapical tubercle highest, and small prolateral tubercles. Femur IV sigmoid and covered with small tubercles, higher on distal area. Tibia IV covered with small tubercles. Tarsal Formula: 5 / 6 / 5 / 5.

Penis ( MNRJ 5515) ( Figs 12View FIGURE 12 A –C): Truncus straight, smoothly continued into the ventral plate. Ventral plate wide, with wide U-cleFt on distal margin, with three –Four ventroapical macrosetae (group E). Five pairs oF small macrosetae, two pairs displaced to anterolaterally (group C), one dorsal pair (group D), one dorsomedian pair oF macrosetae, next to membranous extension (group A) and one lateral ventral proximal pair (group B). Glans slightly dorsoventrally Flattened and base oF stylus straight. Stylus with rounded apex.

Female (SMF 5004/157 paratype)

Measurements: ( SMF 5004/ 157 paratype): dorsal scutum, total length 4.0; dorsal scutum, total width 3.6; prosoma length 1.1; prosoma width 2.0; Femur I length 1.7; Femur II length 3.2; Femur III length 2.4; Femur IV length 3.0; pedipalpal Femur length 0.7.

Dorsum: Dorsal scutum covered with small tubercles. Posterior margin with a row oF 18 tubercles. Free tergites covered with small tubercles, II with row oF 20 tubercles, III with row oF 14 tubercles. The tubercles oF posterior margin oF dorsal scutum and Free tergites are very small. Apex oF coxa IV visible in dorsal view. Chelicera: Bulla with Four scattered tubercles, or Five tubercles close to each other. Pedipalps: Femur with dorsal projection with Four tubercles united at base and Four dorsal prolateral tubercles; row oF six ventral tubercles. Leg IV: Coxa with dorsoapical small apophysis. Trochanter covered with small tubercles, without dorsal tubercle, two retrolateral apical tubercles united at base and one apical tubercle. Tarsal Formula: 5 / 6 / 5 / 5.

Variation. Trochanter IV with retrolateral apical group oF tubercles in higher number (up to Five) and larger size, one retrobasal tubercle being the highest. Coxa IV is visible in dorsal view in some specimens. Measurements ♂ (n=3): dorsal scutum, total length 3.5–3.7; dorsal scutum, total width 3.5–3.6; prosoma length 1.1–1.2; prosoma width 1.6–1.7; Femur I length 1.7; Femur II length 2.7–3.0; Femur III length 2.2–2.5; Femur IV length 2.5–3.0; pedipalpal Femur length 0.7–1.0. Tarsal Formula ♂ (n=3) 5/ 5–6/ 5–6/ 5–6. Measurements ♀ (n=3): dorsal scutum, total length 3.6–3.7; dorsal scutum, total width 3.2–3.5; prosoma length 1.0–1.1; prosoma width 1.6–1.7; Femur I length 1.4–1.5; Femur II length 2.4–2.5; Femur III length 2.1; Femur IV length 2.3–2.7; pedipalpal Femur length 1.5– 1.6.

Material examined. ARGENTINA  . Buenos Aires State, Tigre , 34° 25′ S 58° 35′ W, VII.1938, M. Viana leg., 3♂ 2♀ ( MACN 4505View Materials)GoogleMaps  ; same loc., 02.XI.1954, J. B. Daguerre leg., 2♂ 1♀ (MACN 4507); Córdoba Province, Leones , 32°42′21″S 62°06′30″W, 23.XII.1945, without leg., 1♂ ( MACN 5621View Materials)GoogleMaps  ; Santa Fe Province, Las Gamas, 29°25′00″S 60°23′00″W, 27-30.X.1994, M. Ramirez & J. Faivovich cols., 5♂ 2♀ ( MACN 30758View Materials) Tucumán Province, Sierra de Medina: Burruyacu  , 26° 29′ 59″ S, 64° 44′ 59″ W, 12.XI.1960, M. Birabén leg., 3♂ ( MACN 30757View Materials)GoogleMaps  ; same loc., 19.V.1995, E. Maury leg., 14♂ 19♀ (MACN 30705); San Pedro de Colalao, 26°13'47.4"S 65°29'02.5"W, 10.X.?, F. Silvestri leg., 2♂ ( MACN 27623View Materials)GoogleMaps  ; Road to Tafi del Valle , 487m, 27° 5' 1.3"S 65° 39' 56.5"W, 16.IX.2001, G. Giribet leg., 1♀ ( MCZ 132484View Materials)GoogleMaps  . BRAZIL. Mato Grosso State, 12°48'14.5"S 55°47'59.7"W, no date, E. de Moraes Mello leg., 1♂ ( MNRJ 1375View Materials)GoogleMaps  . BOLIVIA. Santa Cruz, Buena Vista , 17° 29' 33.6" S 63° 39' 29.9" W, 02.XII.2010, R. Pinto-da-Rocha, A. Benedetti, J. Ochoa & A. Sarabia leg., 1♂ 2♀ ( MZSP 67950View Materials)GoogleMaps  .

SMF

Forschungsinstitut und Natur-Museum Senckenberg

MACN

Museo Argentino de Ciencias Naturales Bernardino Rivadavia

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

MCZ

Museum of Comparative Zoology

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Opiliones

Family

Cosmetidae

Genus

Metalibitia

Loc

Metalibitia paraguayensis ( Sørensen, 1884 )

Coronato-Ribeiro, Amanda & Pinto-Da-Rocha, Ricardo 2017
2017
Loc

Metalibitia paraguayensis:

Kury 2015: 4
Simo 2014: 2
Kury 2003: 69
Ferradas 1996: 78
Acosta 1993: 14
Capocasale 1993: 7
Soares 1985: 4
Moritz 1971: 207
Soares 1966: 125
Capocasale 1966: 632
Ringuelet 1959: 421
Soares 1945: 343
Roewer 1938: 5
Canals 1936: 61
Sorensen 1932: 413
Mello-Leitao 1931: 83
Roewer 1912: 13
1931
Loc

Cosmetus

Sorensen 1895: 1
1895
Loc

Cosmetus paraguayensis Sørensen, 1884 : 594

Sorensen 1884: 594
Loc

Libitia (Messa) paraguayensis: Sørensen, 1932 : 413

Sorensen 1932: 413
Loc

Metalibitia tucumana

Soares 1966: 125