Exocora nogueirai , 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: 271-274

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/03C72F26-106A-4147-FF4C-FA23FBCBA28E

treatment provided by

Plazi

scientific name

Exocora nogueirai
status

new species

Exocora nogueirai  new species

Figs. 10View FIGURE 10 A–E; 11 A–F; 12 A, B; 15 E; 16 E; 17

Type: Holotype 1 ɗ, from Caucaia do Alto (23 ° 41 ' 19 ''S; 47 °01' 15 ''W), Cotia, São Paulo, Brazil, 18–28 /VI/ 2002, A. A. Nogueira et al. col. ( IBSPAbout IBSP 143772). Paratypes: 2 ɗ 1 Ψ, from Reserva Florestal do Morro Grande (Área C) (23 º 42 ' 55 ”S; 46 º 56 ' 46 ”W), Cotia, São Paulo, Brazil, 3 /XII/ 2002 (MCN 131417), 2 ɗ 9 Ψ, from Fragmento Florestal Lacerda (23 º 42 ' 57 ”S; 47 º06' 52 ”W), same locality, 11 /XII/ 2002 ( IBSPAbout IBSP 131422, 131423); 1 ɗ 2 Ψ, from Caucaia do Alto (23 ° 41 ' 19 ''S; 47 °01' 15 ''W), same locality, 18–28 /VI/ 2002 ( MZSPAbout MZSP 48843, IBSPAbout IBSP 143767), all collected by A. A. Nogueira et al. col.

Etymology: The specific name is in honor of the collector of all specimens, André do Amaral Nogueira. The name is a noun in the genitive.

Diagnosis: The male palp of Exocora nogueirai  n. sp. resembles that of E. medonho  n. sp., but it differs by presenting on the dorsal part of the lamella characteristica a rounded rim ( Figs 10View FIGURE 10 A–C; 12 A, B). Females differ from E. medonho  n. sp. by the size of the dorsal plate, which is as wider than high ( Figs 10View FIGURE 10 D; 15 E), and by the height of the copulatory duct, which is the half of the membranous sac in E. nogueirai  n. sp. ( Figs 10View FIGURE 10 E; 16 E).

Description: Male (Holotype IBSPAbout IBSP 143772): Total length 1.46. Carapace 0.68 long, 0.6 wide. Carapace yellow with lateral dark markings, in "V" shape. Sternum 0.38 long, 0.44 wide, yellowish, with dark margin. Clypeus 0.12 high. Chelicerae promargin with 2 teeth, retromargin with 3 teeth. Abdomen pale brown, with few dark marking, concentrated near the spinnerets and with spots throughout the abdomen ( Figs 11View FIGURE 11 A, B). Eyes diameter and interdistances: AME 0.06, ALE 0.08, PME 0.07, PLE 0.07, AME-AME 0.01, PME-PME 0.04, AME- ALE 0.02, PME-PLE 0.01. Eyes projected above the clypeus. Ocular area with thick bristles ( Figs 11View FIGURE 11 A, B). Coxa IV separation 1.4 times their width. Femur I/II/III/IV 0.78 / 0.74 / 0.52 / 0.7; patella I 0.24; tibia I 0.76; metatarsus I 0.76; tarsus I 0.48. Legs yellowish, with dark markings on each articles. Tibia I prolateral macroseta thick and sinuous, in a "S" shape ( Fig. 11View FIGURE 11 C). TmI 0.16. Palpal tibia without apophysis. Protegulum present. Radix small. Embolus long and filiform, with posterior origin, curves to ectal side and runs anteriorly, getting into the lamella characteristica. Embolic membrane long projected anteriorly ( Figs 10View FIGURE 10 A–C; 12 A, B).

Female (Paratype IBSPAbout IBSP 143767): Total length 1.48. Carapace 0.62 long, 0.54 wide. Sternum 0.36 long, 0.4 wide. Carapace and sternum color pattern as in male. Clypeus 0.1 high. Chelicerae promargin with 3 teeth, retromargin with 5 teeth. Abdomen color pattern as in male, but with larger white spots ( Figs 11View FIGURE 11 D, E). Eyes diameter and interdistances: AME 0.05, ALE 0.07, PME 0.07, PLE 0.07, AME-AME 0.01, PME-PME 0.05, AME-ALE 0.03, PME-PLE 0.02. Eyes poorly projected and with fewer bristles in ocular area ( Fig. 11View FIGURE 11 E). Coxa IV separation 1.8 times their width. Leg formula I-II-IV-III. Femur I/II/III/IV 0.72 / 0.68 / 0.52 / 0.7; patella I 0.22; tibia I 0.62; metatarsus I 0.66; tarsus I 0.42. Legs color pattern as in male. Tibia I prolateral macroseta thinner and straight ( Fig. 11View FIGURE 11 F). TmI 0.21, dorsal tibial macrosetae 2 - 2 - 2 - 2. TmIV absent. Epigynalventral plate prominent. Spermathecae rounded. Copulatory ducts originate from the posterior side of the spermathecae, oriented anteriorly at the ectal side, curving ventrally and open into a copulatory opening mesally. Fertilization ducts oriented mesally, with origin on the posterior side of the spermatheca ( Figs 10View FIGURE 10 D, E; 15 E; 16 E).

Variation: Males (n= 10): Total length 1.38–1.64; carapace length 0.66–0.78; carapace width 0.56–0.66; femur I length 0.78–0.84. Females (n= 10): Total length 1.5–1.78; carapace length 0.66–0.74; carapace width 0.54–0.6; femur I length 0.68–0.78.

Distribution: Known only for Cotia, São Paulo, Brasil ( Fig. 17View FIGURE 17).

Material examined (N= 43): BRAZIL, São Paulo: Cotia, Caucaia do Alto, (23 ° 41 ' 19 ''S; 47 °01' 15 ''W), 4 ɗ 8 Ψ, 18–28 /VI/ 2002 ( IBSPAbout IBSP 38092, 143764, 143766, 143769– 143772); Fragmento Florestal Beto/Jamil, (23 º 42 ' 57 ”S; 47 º04' 25 ”W), 1 ɗ, 07/XII/ 2002 ( IBSPAbout IBSP 131428); Fragmento Florestal Dito André, (23 º 44 '07”S; 47 º03' 32 ”W), 1 ɗ 3 Ψ, 10 /XII/ 2002 ( IBSPAbout IBSP 131419–131421); Fragmento Florestal Lacerda, (23 º 42 ' 57 ”S; 47 º06' 52 ”W), 2 ɗ 15 Ψ, 11 /XII/ 2002 ( IBSPAbout IBSP 131424–131427); Fragmento Florestal Lila, (23 º 43 ' 43 ”S; 47 º06' 55 ”W), 3 Ψ, 18 /III/ 2003 ( IBSPAbout IBSP 131430); Reserva Florestal do Morro Grande, (23 ° 36 ' 14 ''S; 46 ° 55 ' 8 ''W), 3 ɗ 3 Ψ, 8 /III/ 2003, ( IBSPAbout IBSP 131416; 131418) all collected by A. A. Nogueira et al. col.

IBSP

Instituto Biologico de Sao Paulo

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Linyphiidae

Genus

Exocora