Synotaxus jaraguari,

Souza, Lucas Henrique Bonfim, Brescovit, Antonio Domingos & Araujo, Douglas, 2017, A new species of Synotaxus and the first chromosomal study on Synotaxidae, presenting a rare XY sex chromosome system in spiders (Araneae, Araneoidea), Zootaxa 4303 (1), pp. 140-150: 141-142

publication ID

https://doi.org/10.11646/zootaxa.4303.1.9

publication LSID

lsid:zoobank.org:pub:20F38845-79A0-47E2-A077-7EFC9F595AF3

persistent identifier

http://treatment.plazi.org/id/F157FD39-FFE1-D770-2AEE-A8C3FB04FE6B

treatment provided by

Plazi

scientific name

Synotaxus jaraguari
status

new species

Synotaxus jaraguari  new species

Figs 1–7View FIGURE 1View FIGURE 2View FIGURE 3View FIGURE 4View FIGURE 5View FIGURE 6View FIGURE 7

Types. Holotype male from Furnas do Dionísio (20°10'25.83"S 54°34'40.46"W), Jaraguari  , Mato Grosso do Sul, Brazil, 14/XI/2015, D. Araujo coll., deposited in IBSP 167041View MaterialsGoogleMaps  . Paratype: one female from Toca do Ouriço (20°8′34″S 54°35′6″W), Jaraguari  , Mato Grosso do Sul, Brazil, 19/V/2016, L.H.B Souza coll. ( IBSP 168350View Materials).GoogleMaps 

Additional material examined. Brazil. Mato Grosso do Sul: Jaraguari  , Furnas do Dionísio (20°10'25.83"S 54°34'40.46"W), 1♂, 14/XI/2015, D. Araujo coll. ( IBSP 167036)GoogleMaps  ; 1♂, 14/XI/2015, D. Araujo coll. (IBSP 167043; SEM); 1♀ juv., 17/III/2016 (IBSP 168346); 4♀ 1♂ juv. 6 juv. (IBSP 168347; IBSP 168343; IBSP 168351; IBSP 168354; IBSP 168344; IBSP 168365; IBSP 168367; IBSP 168345; IBSP 168348; IBSP 168353; IBSP 168349), all collected in 07/VII/2016, by L.H.B. Souza coll.; Toca do Ouriço (20°06'04.73"S 54°33'46.23"W), 1♀, 19/V/2016, L.H.B. Souza coll. ( IBSP 168352).GoogleMaps 

Etymology. The specific epithet is a noun in apposition taken from the type-locality.

Diagnosis. Synotaxus jaraguari  n. sp. ( Fig. 1View FIGURE 1) resembles S. monocerus  , S. itabaiana  and S. siolli  by the presence of a distinctive horn in the male ocular area ( Fig. 2View FIGURE 2 A –D, Agnarsson 2003: fig. 3F –G). The males of S. jaraguari  differs from these species by the shorter prongs in the patellar apophysis ( Fig. 3View FIGURE 3 B) and by the rounded base of TTA ( Figs. 2View FIGURE 2 E –F, 3A). Females have lateral atria on the epigynum, similar to that of Synotaxus itabaiana  (see Santos & Rheims 2005: fig. 17), but differ from this latter species by the anterior median border directed posteriorly ( Fig. 4View FIGURE 4 C) and by the large accessory sacs connected posteriorly to the spermathecae ( Fig. 4View FIGURE 4 D).

Description. Male ( IBSP 167041). Coloration: carapace yellow cream, lateral borders and large setae black, with border of the ocular median area black. Chelicerae white with teeth orange. Endites, labium and sternum white. Legs yellowish white and abdomen white. Ocular area overhanging clypeus, with one elongated and curved horn between the anterior median eyes ( Figs 2View FIGURE 2 A –D). Legs thin, with numerous setae. Abdomen elongated and pointed posteriorly, scarcely covered with setae. Carapace 1.3 long, 1.05 wide. Patella-tibia I length 5.0, II 3.0, III 1.2, IV 2.5. Abdomen used for cytogenetic study, partly destroyed. Paracymbium short with truncated apex, median apophysis large and rounded, TTA rounded distally ( Figs 2View FIGURE 2 E –F, 3A –D, 4A –B).

Female (paratype IBSP 168350). Coloration as in male, except distal area of tibia and metatarsus I –II darker. Body shape and pilosity as in male. Ocular area anteriorly triangular in dorsal view, with a small and slender curved macrosetae. Carapace 1.3 long, 1.0 wide. Patella-tibia I length 4.2, II 2.5, III 1.0, IV 2.4. Abdomen as in male. Copulatory ducts inconspicuous or apparently absent. Accessory sacs large and rounded. Spermathecae globose. Fertilization ducts long, originating from base of spermathecae ( Figs 4View FIGURE 4 C –D).

Distribution. Known only from the type locality in the state of Mato Grosso do Sul, Brazil.

IBSP

Instituto Biologico de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Synotaxidae

Genus

Synotaxus