Mesabolivar iguazu Huber, 2000: 215
M. chapeco
The South American spider genera Mesabolivar and Carapoia (Araneae, Pholcidae): new species and a framework for redrawing generic limits
Huber, Bernhard A.
Zootaxa
2018
2018-03-19
4395
1
1
178
3ZXDY
Huber, 2000
Huber
2000
[151,549,930,956]
Arachnida
Pholcidae
Mesabolivar
GBIF
Animalia
Araneae
95
96
Arthropoda
species
iguazu
Mesabolivar iguazuHuber, 2000: 215; figs 138, 830–839 ( ♂ ♀, Argentina, Brazil). Huber 2014: 139 (except specimens from Puerto Libertad and Arroyo Uruguaykm 30; see M. chapeco).
Diagnosis.(amendments; see Huber 2000). Distinguished from similar congeners ( M. uruguayensis, M. chapeco, M. yucuma) by long proximal processes on male chelicerae (Huber 2000: fig. 834; similar in M. chapeco, where the distal apophyses are much less prominent in lateral view); also by male procursus ( Figs 408–410; distinctive distal sclerotized and membranous elements), and by shape of epigynum ( Figs 437–438and Huber 2000: figs 837– 838; anterior plate with pair of processes and pocket at posterior margin; similar M. charruaand M. yucuma).
Typematerial. ARGENTINA: Misiones: ♂ holotype, AMNH, Parque Nacional Iguazú [ 25.66°S, 54.47°W], 206 ma.s.l., palm forest, 8.xii.1990– 6.i.1991(S. & J. Peck). Newrecords. ARGENTINA: Misiones: 5♂ 18♀, MACN( Ar19974), Parque Nacional Iguazú, Área Cataratas [ 25°40.7’S, 54°26.9’W], 4.ix.1963(collector not given); 7♂ 6♀, MACN( Ar4313), same locality, xi.1954( Schiapelli, De Carlo); 1♂, MACN( Ar20052), same locality, 16.viii.1959( Nuñez); 1♂ 1♀, MACN( Ar20016), same locality, 13.i.1966( Galiano); 1♀, ZIMG(II-28332), same locality, 1.iii.2012( G. Rubio). 1♀, MACN( Ar20088), Parque Nacional Iguazú, Área Cataratas, Sendero Macuco, 15.vii.1993( M. di Vitteti); 1♂, MACN( Ar20086), same locality, 8–15.ii.1995( M.J. Ramirez); 1♂ 2♀, MACN( Ar22113–15), same locality, 18–21.i.2005( C. Grismado et al.). 1♂ 1♀, ZIMG(II-28333–34), same locality, 24.ii.2012( P. Michalik). 1♀2 juvs, MACN( Ar4017), Parque Nacional Iguazú, x.1950( Schiapelli, De Carlo); 4♂ 2♀, MACN( Ar20077), same locality, 8– 15.ii.1995( M.J. Ramirez); 1♂, MACN( Ar20107), same locality, vii.1983( P.A. Goloboff); 2♂ 2♀, MACN( Ar20079), same locality, vii.1985( M. Ramirez). 1♀, MACN( Ar20096), Parque Nacional Iguazú, Palmital, 5 kmW Yacuí[ 25°40’S, 54°12’W], 8–15.ii.1995( M.J. Ramirez). 1♀, MACN(separated from Ar20049), Parque Nacional Iguazú, Ruta National 101 y Arroyo Yacuí[ 25°40.8’S, 54°10.1’W, 230 m], i.1966( Galiano). 1♂, ZIMG(28335), Parque Nacional Iguazú, “ Apepu”, 29.ii.2012(collector not given). 1♂, MACN(separated from Ar19971), Parque Provincial Cruce Caballero, NE San Pedro[~ 26.5°S, 54°W, 500 m], 27–29.x.1995( M. Ramirez). 1♂, MACN( Ar20091), Parque Provincial Uruguaí[ 25°52’S, 54°34’W, 200 m], Refugio Caá-Porá, 3 kmW Deseado, 14– 15.ii.1995( M. Ramirez). 1♂, MACN( Ar4314), Departamento Frontera, San Antonio [ 26°03’S, 53°44’W, 530 m], Refugio Piñalitos, ix.1954( Schiapelli, De Carlo). 1♂, MACN( Ar4046), Departamento Frontera, Tobuna [ 26°28’S, 53°53’W, 580 m], ii.1952( M. Partridge).
BRAZIL: Paraná: 29♂ 15♀, ZFMK( Ar19181), Foz do Iguaçu National Park(25.63– 25.69°S, 54.43– 54.44°W), 200–230 ma.s.l., 31.x.2014( B.A. Huber, L.S. Carvalho); 1♂ 2♀ 1 juv.in pure ethanol, ZFMK( Br14- 205), same data. 17♂ 15♀3 juvs, ZFMK( Ar19182–83), Foz do Iguaçu National Park, near Céu Azul( 25.130°S, 53.823°Wto 25.149°S, 53.807°W), 620–690 ma.s.l., 2.xi.2014( B.A. Huber, L.S. Carvalho); 2♀in pure ethanol, ZFMK( Br14-208), same data. FIGURES 408–418. Mesabolivar iguazuHuber, 2000(408–410, ZFMK Ar 19181) and M. argentinensis(Mello-Leitão, 1938)(411–418, MACN Ar 32453). 408–414. Left procursi, prolateral, dorsal, and retrolateral views (412: prolateral, slightly dorsal view). 415–416. Male chelicerae, frontal and lateral views. 417–418. Epigynum, ventral and lateral views. Scale lines: 0.2 (408–414; all procursi at same scale), 0.3 (415–416), 0.5 (417–418). Description(amendments; see Huber 2000). Tibia 1 in65 newly examined males: 7.6–12.1 (mean 10.5). Femora 2 and 3 insome males clearly wider than other femora, in others barely wider (e.g., diameters of femora in small male: 0.19, 0.21, 0.21, 0.19; in large male: 0.30, 0.37, 0.35, 0.31). Legs densely covered with short hair, tibiae dorsally with single row of long hairs. Prolateral trichobothrium present on tibia 1. Proximal cheliceral processes vary slightly in diameter (even among specimens from a single collecting event) but are consistently long. Females in general similar to males but all femora same diameter; tibia 1 in 50 females: 5.6–9.3 (mean 7.6). Epigynum humps vary slightly in shape (in lateral view), even within samples from a single collecting event. Natural history.The spiders were found in domed webs close to the ground. When disturbed, they started swinging with large amplitude and ran back into the protective shelter.
Distribution.Known from several localities in the Iguazu Falls area ( Argentina, Brazil) ( Fig. 737).
1835975636
1990-12-08
AMNH
Argentina
206
-25.66
Misiones
747
-54.47
95
96
2
1
Misiones
holotype
1835975544
1963-09-04
MACN
Argentina
-25.678333
Ar
124
-54.448334
New
95
96
23
18
5
Misiones
1835975640
1954-11
MACN
Schiapelli & De Carlo
Argentina
-25.678333
Ar
124
-54.448334
New
95
96
13
6
7
Misiones
1835975647
[416,1104,1445,1470]
1959-08-16
MACN
Nunez
Argentina
-25.678333
Ar
124
-54.448334
New
95
96
1
1
Misiones
1835975553
1966-01-13
MACN
Galiano
Argentina
-25.678333
Ar
124
-54.448334
New
95
96
2
1
1
Misiones
1835975559
[559,1237,1481,1506]
2012-03-01
ZIMG
G. Rubio
Argentina
-25.678333
Ar
124
-54.448334
New
95
96
1
1
Misiones
1835975560
1993-07-15
MACN
M. di Vitteti
Argentina
Ar
95
96
1
1
Misiones
1835975552
1995-02-08
1995-02-15
1995-02-08
MACN
M. J. Ramirez
Argentina
Ar
95
96
1
1
Misiones
1835975547
2005-01-18
2005-01-21
2005-01-18
MACN
C. Grismado
Argentina
Ar
95
96
3
2
1
Misiones
1835975653
[392,1170,1589,1614]
2012-02-24
2005-01-21
2005-01-18
ZIMG
P. Michalik
Argentina
Ar
95
96
2
1
1
Misiones
1835975649
1950-10
MACN
Schiapelli & De Carlo
Argentina
Parque Nacional Iguazu
Ar
95
96
1
1
Misiones
1835975558
1995-02-08
1995-02-15
1995-02-08
MACN
M. J. Ramirez
Argentina
Ar
Ar
95
96
6
2
4
Misiones
1835975646
[462,1197,1661,1686]
1983-07
1995-02-15
1995-02-08
MACN
P. A. Goloboff
Argentina
Ar
Ar
95
96
1
1
Misiones
1835975637
1985-07
1995-02-15
1995-02-08
MACN
M. Ramirez
Argentina
Ar
Ar
95
96
4
2
2
Misiones
1835975632
1995-02-08
1995-02-15
1995-02-08
MACN
M. J. Ramirez
Argentina
-25.666666
Yacui
1245
-54.2
Ar
95
96
1
1
Misiones
1835975639
1966-01
MACN
Galiano
Argentina
230
-25.68
Arroyo Yacui
124
-54.168335
Ar
95
96
1
1
Misiones
1835975630
2012-02-29
ZIMG
Argentina
Apepu
Parque Nacional Iguazu
95
96
1
1
Misiones
1835975564
1995-10-27
1995-10-29
1995-10-27
MACN
M. Ramirez
Saint Pierre and Miquelon
500
-26.5
Parque Provincial Cruce Caballero
Ar
95
96
1
1
1835975573
1995-02-14
1995-02-15
1995-02-14
MACN
M. Ramirez
Uruguay
Ar
200
-25.866667
Deseado
1244
-54.566666
Refugio Caa-Pora
95
96
1
1
1835975585
1954-09
MACN
Schiapelli & De Carlo
Uruguay
530
-26.05
Refugio Pinalitos
1243
-53.733334
Ar
95
96
1
1
1835975678
1952-02
MACN
M. Partridge
Uruguay
580
-26.466667
Ar
1241
-53.883335
95
96
1
1
1835975673
2014-10-31
ZFMK
B. A. Huber & L. S. Carvalho
Brazil
215
-25.69
Foz do Iguacu National Park
747
-54.44
Ar
96
97
44
15
29
Parana
1835975662
2014-10-31
ZFMK
Br
Brazil
215
-25.69
Foz do Iguacu National Park
747
-54.44
Ar
96
97
4
2
1
Parana
1835975567
2014-11-02
ZFMK
B. A. Huber & L. S. Carvalho
Brazil
Ar
655
-25.149
Ceu Azul
74
-53.807
Foz do Iguacu National Park
96
97
32
15
17
Parana
1835975568
2014-11-02
ZFMK
Br
Brazil
Ar
655
-25.149
Ceu Azul
74
-53.807
Foz do Iguacu National Park
96
97
2
2
Parana