Keyserling, 1891 : 173
Moenkhaus 1898 : 100
Mello-Leitão 1947c : 2
Mesabolivar cyaneomaculatus : Huber 2000: 210
Mello-Leitão 1943 : 155
Blechroscelis
Mello-Leitão 1947b : 233
Mesabolivar cyaneomaculatus : Huber 2015: 57
M. cyaneomaculatus
M. cyaneomaculatus
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
3ZXDD
(Keyserling, 1891)
Keyserling
1891
[151,753,1844,1870]
Arachnida
Pholcidae
Mesabolivar
GBIF
Animalia
Araneae
58
59
Arthropoda
species
cyaneomaculatus
Pholcuscyaneo-maculatus Keyserling, 1891: 173, pl. 5, figs 119 a–d (♂♀, Brazil: Rio de Janeiro). Blechrosceliscyaneo-maculatus/-a: Moenkhaus 1898: 100–101. Mello-Leitão 1918: 107–108, figs 22–23. (Both authors just translated Keyserling’s original description, Mello-Leitão also copied Keyserling’s figures; both without adding new data).
Psilochorus cyaneomaculatus: Mello-Leitão 1947c: 2(Brazil: Minas Gerais). Mesabolivar cyaneomaculatus: Huber 2000: 210, figs 811–819 (Brazil: Rio de Janeiro). Machado 2007: 81 (Brazil: Minas Gerais, São Paulo). Huber & Rheims 2011: 281 (Brazil: Rio de Janeiro, São Paulo). Probable and certain misidentifications(see Notes below) Psilochorus cyaneomaculatus: Mello-Leitão 1943: 155(Brazil: Pernambuco, Rio Grande do Sul). Blechrosceliscyaneo-maculatus: Mello-Leitão 1947b: 233(Brazil: Paraná). Mesabolivar cyaneomaculatus: Huber 2015: 57(Brazil: Espírito Santo). Notes.I have not seen Mello-Leitão’s (1943, 1947b) specimens from Paraná, Rio Grande do Sul, and Pernambuco, but consider these records dubious. Extensive recent collections along the entire Brazilian Atlantic Forest from Rio Grande do Sul to Rio Grande do Norte do not include M. cyaneomaculatusoutside Rio de Janeiro and São Paulo states. In particular, Rio Grande do Sul and Pernambuco are far from the confirmed range of this species. The Paraná records might be valid but need confirmation. The Minas Gerais record in Mello-Leitão (1947c)receives some support from Machado’s (2007) record from this state. Finally, my own previous record from Espírito Santo (Huber 2015) is based on two females (ZFMK, Ar 19073, Br10-83) that are very similar to M. cyaneomaculatusbut have lower epigynal processes in a more anterior position; they probably represent a different, undescribed species.
Diagnosis.Distinguished from most known congeners by armature of male chelicerae (Huber 2000: fig. 812; one pair of frontal apophyses near median line), shape of procursus (Huber 2000: figs 813–816, Figs 227–229; widely curved, distinctive distal structures), and shape of epigynum (Huber 2000: figs 817–818, Figs 230–232; trapezoidal anterior plate with pair of apophyses and median pocket); from the very similar M. claricaeby longer and more slender procursus with different distal elements (compare Figs 227–229 and 233–235), and by larger epigynum (width>0.9, vs. < 0.8 in M. claricae) with anterior pair of low humps (compare Figs 230–232 and 236– 237).
Typematerial. BRAZIL: Rio de Janeiro: 1♂ 1♀ syntypes, BMNH(1890.7.1.8325–7), Rio de JaneiroCity(?), no further locality data, leg. E.A. Göldi, examined (Huber 2000). Newrecords. BRAZIL: Rio de Janeiro: 6♂ 3♀ 1 juv., ZFMK( Ar19074–77), ~ 4 kmNW Penedo( 22°24.5’S, 44°33.0’–33.4’W), forest along river, 700–770 ma.s.l., 14–16.viii.2007( B.A. Huber); 1♂ 1♀in pure ethanol, ZFMK( Br07/100-6, Br07/100-43), same data. 4♂ 1♀, ZFMK( Ar19078), Cachoeira da Pedra Brancanear Paraty( 23°11.8’S, 44°46.0’W), forest near river, ~ 230 ma.s.l., 22.viii.2007( B.A. Huber). 1♀in pure ethanol, ZFMK( Br09-107), Reserva Ecológica Riodas Pedras( 22°59.5’S, 44°06.0’–06.8’W), 50–200 ma.s.l., 25–26.ix.2009( B.A. Huber). 1♀in pure ethanol, ZFMK(G007), Itatiaia[ 22.45°S, 44.59°W], 8–15.vi.2001( H. Japyassú).
São Paulo: 3♂ 4♀3 juvs, ZFMK( Ar19079), Paranapiacaba, Estação Biológica do Alto da Serra( 23°46.7’S, 46°18.6’W) 14–15.xii.2003( B.A. Huber); 2♂ 2♀in pure ethanol, ZFMK( Br03/100-21), same data. 3♀, ZFMK( Ar19080), Ubatuba, Fazenda Angelim ( 22°36.9’S, 52°17.9’W), 16–18.xii.2003( B.A. Huber). 1♂, ZFMK( Ar19081), São Paulo, Parque Estadual de Cantareira( 23.417°S, 46.617°W), 20.xii.2003( B.A. Huber); 1♂in pure ethanol, ZFMK( Br03/100-14a), same data. Description(amendments; see Huber 2000). Tibia 1 innine newly examined males: 13.1–17.7 (mean 15.6); in 11 newly examined females: 10.4–13.7 (mean 12.2). Male tibia 2/tibia 4 length (N=2): 1.05, 1.08. Femora 2 and 3 insome males much wider than other femora, in others barely wider. Prolateral trichobothrium present on tibia 1. Epigynal processes slightly variable (in lateral view; Figs 231–232). Natural history.The spiders were found in large sheltered spaces among rocks and logs, also under bridges. They built rather flat webs that seemed to have no or a very limited tangle of lines above the sheet. During the day, the spiders sat on the rock or log; when disturbed, they ran into the web and started swinging with large amplitude and high frequency.
Distribution.Widely distributed in the Brazilian states of São Paulo, Rio de Janeiro, and Minas Gerais, possibly ranging into Paranástate ( Fig. 729).
1835975823
2007-08-14
2007-08-16
2007-08-14
ZFMK
B. A. Huber
Brazil
New
735
-22.408333
Penedo
Ar
59
60
10
3
6
Rio de Janeiro
1835975824
2007-08-14
2007-08-16
2007-08-14
ZFMK
Br
Brazil
New
735
-22.408333
Penedo
Ar
59
60
2
1
1
Rio de Janeiro
1835975821
2007-08-22
ZFMK
B. A. Huber
Brazil
Ar
230
-23.196667
Paraty
125
-44.766666
Cachoeira da Pedra Branca
59
60
5
1
4
Rio de Janeiro
1835975817
2009-09-25
2009-09-26
2009-09-25
ZFMK
B. A. Huber
Brazil
Br
125
-22.991667
Pedras
Reserva Ecologica Rio
59
60
1
1
Rio de Janeiro
1835975807
[313,1353,1266,1291]
2001-06-08
2001-06-15
2001-06-08
ZFMK
H. Japyassu
Brazil
-22.45
Itatiaia
756
-44.59
59
60
1
1
Rio de Janeiro
1835975740
2003-12-14
2003-12-15
2003-12-14
ZFMK
B. A. Huber
Ar
-23.778334
Estacao Biologica do Alto da Serra
125
-46.31
Paranapiacaba
59
60
7
4
3
Sao Paulo
1835975732
[638,1295,1338,1363]
2003-12-14
2003-12-15
2003-12-14
ZFMK
Br
Ar
-23.778334
Estacao Biologica do Alto da Serra
125
-46.31
Paranapiacaba
59
60
4
2
2
Sao Paulo
1835975777
2003-12-16
2003-12-18
2003-12-16
ZFMK
B. A. Huber
-22.615
Ar
125
-52.298332
59
60
3
3
Sao Paulo
1835975857
2003-12-20
ZFMK
B. A. Huber
-23.417
Parque Estadual de Cantareira
74
-46.617
Ar
59
60
1
1
Sao Paulo
1835975866
2003-12-20
ZFMK
Br
-23.417
Parque Estadual de Cantareira
74
-46.617
Ar
59
60
1
1
Sao Paulo