Exocora girotii , Lemos, Yuji & Brescovit, Antonio D., 2013

Lemos, Yuji & Brescovit, Antonio D., 2013, New species of the spider genus Exocora Millidge, 1991 (Araneae: Linyphiidae) from Brazil, Zootaxa 3599 (3), pp. 261-278: 266

publication ID

http://dx.doi.org/10.11646/zootaxa.3599.3.4

publication LSID

lsid:zoobank.org:pub:8570920B-EAC4-48A6-A831-6463682B36D1

persistent identifier

http://treatment.plazi.org/id/03C72F26-1065-414F-FF4C-FF11FD2AA6CC

treatment provided by

Plazi

scientific name

Exocora girotii
status

new species

Exocora girotii  new species

Figs 4View FIGURE 4 A–D; 5 A–F; 15 B; 16 B; 17

Types: Holotype 1 ɗ, from Fazenda Angelim (23 º 23 ' 49 "S; 45 º03' 51 "W), Ubatuba, São Paulo, Brazil, 13–16 /II/ 2012, A. M. Giroti col. ( IBSPAbout IBSP 161827). Paratype: 1 Ψ, from Estação Ecológica da Juréia-Itatins (24 º 33 'S; 47 º 13 'W), Peruíbe, São Paulo, Brazil, 26 /IV– 3 /V/ 1999, A. D. Brescovit et al. col. ( IBSPAbout IBSP 24852); 2 Ψ, from Reserva Natural da Serra do Itaqui (25 ° 18 ' 25 ''S; 48 ° 19 ' 44 ''W), Guaraqueçaba, Paraná, Brazil, IX/ 2007, E. F. Ramos col. ( IBSPAbout IBSP 143750); 1 Ψ, from Reserva Natural do Rio Cachoeira (25 ° 25 ' 44 ''S; 48 ° 42 ' 43 ''W), Antonina, Paraná, Brazil, 24 /IX/ 2005, E. Álvarez col. ( MCN 44720View Materials); 1 Ψ, from Parque Estadual da Serra do Tabuleiro (27 ° 52 ' 14 "S; 48 ° 47 ' 10 "W), Paulo Lopes, Santa Catarina, Brazil, 10–20 /II/ 2002, Equipe Biota col. ( IBSPAbout IBSP 143792).

Etymology: The species name is in honor of André Marsola Giroti, for his effort in finding Exocora  whenever he is in the field, and is a noun in the genitive.

Diagnosis: Males of Exocora girotii  n. sp. are distinguished from those of other species in the genus, except E. ribeiroi  n. sp., by the shape of the lamella characteristica, with proximal part globose, and by the short embolic membrane ( Figs 4View FIGURE 4 A, B). Females are diagnosed by the curved shape of the posterior margin of ventral plate, by the very narrowed dorsal plate and by the shape of the copulatory ducts, long and coiled ( Figs 4View FIGURE 4 C, D; 15 B; 16 B). Exocora girotii  can be distinguished from E. ribeiroi  n. sp. by the twisted distal part of lamella characteristica ( Figs 4View FIGURE 4 A, B), by its wider atrium ( Figs 4View FIGURE 4 C; 15 B), and by the closer distance between the copulatory ducts ( Figs 4View FIGURE 4 D; 16 B).

Description: Male (Holotype IBSPAbout IBSP 161827): Total length 1.52. Carapace 0.76 long, 0.62 wide, yellowish, with dark spots on the lateral. Sternum 0.42 long, 0.44 wide, yellowish with dark margins. Clypeus 0.16 high. Chelicerae promargin with three teeth, retromargin with four teeth. Abdomen pale brown, with many dark marking along the entire surface ( Figs 5View FIGURE 5 A, B). Eyes diameter and interdistances: AME 0,0 6, ALE 0.09, PME 0.09, PLE 0.09, AME-AME 0.01, PME-PME 0.02, AME-ALE 0.02, PME-PLE 0.04. Eyes grouped, projected above the clypeus, ocular area with few bristles ( Fig. 5View FIGURE 5 B). Coxa IV separation 1.1 times their width. Femur I/II/ III/IV 0.92 / 0.86 / 0.58 / 0.78; patella I 0.28; tibia I 0.88; metatarsus I 0.96; tarsus I 0.62. Legs yellow with dark spots on each article. Prolateral macroseta, thick and curved, on tibia I ( Fig. 5View FIGURE 5 C). TmI 0.21. Palpal tibia without apophysis. Protegulum present. Embolic division with small radix. Embolus long, filiform and free, origin from the posterior side of the embolic division, runs to the ectal side curving several times ( Figs 4View FIGURE 4 A, B).

Female (Paratype IBSPAbout IBSP 143792): Total length 1.96. Carapace 0.74 long, 0.56 wide. Sternum 0.42 long, 0.44 wide. Clypeus 0.1 high. Chelicerae promargin with 3 teeth, retromargin with 5 teeth. Body color pattern same as male, but darker and with white spots on the abdomen ( Figs 5View FIGURE 5 D, E). Eyes diameter and interdistances: AME 0.06, ALE 0.1, PME 0.09, PLE 0.09, AME-AME 0.01, PME-PME 0.02, AME-ALE 0.02, PME-PLE 0.02. Eyes pattern as in male ( Fig. 5View FIGURE 5 E). Coxa IV separation 1.16 times their width. Femur I/II/III/IV 0.82 / 0.78 / 0.6 / 0.78; patella I 0.24; tibia I 0.72; metatarsus I 0.72; tarsus I 0.5. Legs as in male, tibia I prolateral macroseta thinner and straight ( Fig. 5View FIGURE 5 F). TmI 0.25. Epigynum prominent ( Figs 4View FIGURE 4 C; 15 B). Spermathecae oblong. The long and coiled copulatory ducts originate in the ventral part of the spermathecae. Fertilization ducts mesally oriented, originating from the dorsal part of the spermathecae ( Figs 4View FIGURE 4 D; 16 B).

Variation: Males (n= 2): Total length 1.18–1.52; carapace length 0.76–0.78; carapace width 0.62–0.66; femur I length 0.92 – 0.92. Females (n= 7): Total length 1.78–2.16; carapace length 0.72–0.9; carapace width 0.64–0.72; femur I length 0.82–0.94.

Distribution: States of Rio de Janeiro, São Paulo, Paraná, Santa Catarina, in Brazil ( Fig. 17View FIGURE 17).

Material examined (N= 9): BRAZIL, Paraná: Antonina, Reserva  Natural do Rio Cachoeira, (25 ° 25 ' 44 ''S; 8 ° 42 ' 43 ''W), 2 Ψ, 13–19 /IV/ 2004, H. Höfer et al. col. ( IBSPAbout IBSP 143796; MCN 44720View Materials); Guaraqueçaba, Reserva Natural da Serra do Itaqui, (25 ° 18 ' 25 ''S; 48 ° 19 ' 44 ''W), 3 Ψ, IX/ 2007, L. Scheuermann et al. col. ( IBSPAbout IBSP 143750; IBSPAbout IBSP 143799). Santa Catarina: Paulo Lopes, Parque Estadual da Serra do Tabuleiro, (27 ° 52 ' 14 "S; 48 ° 47 ' 10 "W), 1 Ψ, 10–20 /II/ 2002, Equipe Biota col. ( IBSPAbout IBSP 143792). Rio de Janeiro: Teresópolis, Parque Nacional da Serra dos Órgãos, (22 º 24 ' 43 ''S; 42 º 57 ' 57 ''W), 1 Ψ, 23 /VIII/ 2001, Equipe Biota col. ( IBSPAbout IBSP 132172). São Paulo: Peruíbe, Estação Ecológica da Juréia-Itatins, (24 º 33 'S; 47 º 13 'W), 1 ɗ 1 Ψ, 26 /IV– 3 /V/ 1999, A. D. Brescovit et al. col. ( IBSPAbout IBSP 25251; IBSPAbout IBSP 24852).

IBSP

Instituto Biologico de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Linyphiidae

Genus

Exocora