Soesilarishius elongatulus, Ruiz, Gustavo R. S. & Sobrinho, Adriana T., 2016

Ruiz, Gustavo R. S. & Sobrinho, Adriana T., 2016, Three new species and redescription of the type species of Soesilarishius Makhan, 2007 (Araneae: Salticidae: Euophryini), Zootaxa 4196 (2), pp. 250-260 : 259-260

publication ID

https://doi.org/ 10.11646/zootaxa.4196.2.4

publication LSID

lsid:zoobank.org:pub:3B2AC3D7-D743-4ADB-8C42-5FBFD05E01A1

DOI

https://doi.org/10.5281/zenodo.6069995

persistent identifier

https://treatment.plazi.org/id/038A7A13-FFE4-3B52-19FD-9994FCF8FC45

treatment provided by

Plazi

scientific name

Soesilarishius elongatulus
status

sp. nov.

Soesilarishius elongatulus View in CoL sp. nov.

Figs 29‒37 View FIGURES 29 – 32 View FIGURES 33 – 37

Types. Holotype: Ƌ from Rio Acapu , Floresta Estadual do Trombetas , Oriximiná, Pará, Brazil, 01°06'10.10"S, 56°26'04.00"W, 10–18.X.2014, leg. M.B. Aguiar-Neto et al. ( MPEG 32013 View Materials ) GoogleMaps . Paratype: 1 ♀ ( MPEG 32014 View Materials ), same data as holotype. GoogleMaps

Additional material examined. BRAZIL: Pará: Oriximiná, Floresta Estadual do Trombetas , Rio Acapu (along about 25 km on the North margin, between 01°06'10.10"S, 56°26'04.00"W and 01°07'30.50"S, 56°19'05.50"W): 4 ♀, 10–18.X.2014, leg. M.B. Aguiar-Neto et al. ( MPEG 32017–32020 View Materials ). GoogleMaps

Etymology. The epithet is to be treated as a Latin adjective, derived from elongatus (prolonged/removed), in allusion to the long embolus with relocated base, and the diminutive - ulus, due to the smaller body size in comparison to its syntopic congeners.

Diagnosis. The male is similar to those of S. micaceus and S. flagellator Ruiz, 2013 by the long embolus ( Fig. 33 View FIGURES 33 – 37 ). It can be distinguished from that of S. flagellator by the shorter embolus and exposed embolar base ( Fig. 33 View FIGURES 33 – 37 ), and from that of S. micaceus by the longer embolus (S-shaped in S. elongatulus sp. nov.; J-shaped in S. micaceus ). The female is similar to that of S. amrishi by sharing the thin initial portion of the copulatory duct leading to a large spermatheca ( Figs 11 View FIGURES 5 – 11 , 36 View FIGURES 33 – 37 ), but can be recognized by having the coupling pocket forming an inverted “U” ( Figs 35‒36 View FIGURES 33 – 37 ) (divided into two pockets in S. amrishi ); it is also similar to that of S. micaceus by the coupling pocket and copulatory openings, but can be distinguished by the larger spermathecae.

Description. Male holotype (MPEG 32013). Total length: 2.07. Carapace dark brown, with tufts of white scales behind anterior and posterior eyes ( Fig. 29 View FIGURES 29 – 32 ); 1.18 long, 0.87 wide, 0.63 high. Ocular quadrangle 0.63 long; anterior eye row 0.89 wide, posterior 0.76 wide. Chelicera, labium, endite and sternum dark brown ( Fig. 30 View FIGURES 29 – 32 ). Palp brown, RTA slender and longer than in other congeners, pointing ventrally ( Fig. 34 View FIGURES 33 – 37 ); small projection on distal prolateral part of tibia; membrane at embolar base forming “conductor” ( Fig. 33 View FIGURES 33 – 37 ). Legs 3412; I–IV: femora, patellae and tibiae dark brown, metatarsi and tarsi yellow; patellae I–IV and tibiae III–IV with tufts of white scales ( Fig. 30 View FIGURES 29 – 32 ). Length of leg I 1.92 (0.63 + 0.74 + 0.55); II 1.65 (0.55 + 0.57 + 0.53); III 2.01 (0.72 + 0.66 + 0.63); IV 1.99 (0.61 + 0.66 + 0.72). Abdomen dorsally dark brown, with two pairs of tufts of white scales, one anteriorly and second on middle, and third, median tuft on anal tubercle ( Fig. 29 View FIGURES 29 – 32 ); laterally with pair of tufts of white scales on posterior half; dark brown ventrally ( Fig. 30 View FIGURES 29 – 32 ). Spinnerets yellowish.

Female paratype (MPEG 32014). Total length: 2.80. Carapace yellow, with cephalic region black ( Fig. 31 View FIGURES 29 – 32 ); 1.33 long, 1.00 wide, 0.71 high. Ocular quadrangle 0.67 long; anterior eye row 1.00 wide, posterior 0.86 wide. Chelicera, labium, endite, sternum and palp yellow ( Fig. 32 View FIGURES 29 – 32 ). Legs 3142; I–III yellow; IV: femur yellow, patella with tuft of white scales, tibia brown with tuft of white scales, metatarsus proximally brown, distally yellow and tarsus yellow ( Fig. 32 View FIGURES 29 – 32 ). Length of leg I 2.43 (0.81 + 1.00 + 0.62); II 1.95 (0.62 + 0.71 + 0.62); III 2.57 (0.86 + 0.90 + 0.81); IV 2.37 (0.71 + 0.76 + 0.90). Abdomen as in male, lighter; whitish ventrally ( Fig. 32 View FIGURES 29 – 32 ). Epigyne with round copulatory openings, tube-shaped copulatory ducts and inflated C-shaped spermathecae ( Fig. 35 View FIGURES 33 – 37 ). Spinnerets yellow.

Distribution. Known only from type locality ( Brazil, Pará).

MPEG

Museu Paraense Emilio Goeldi

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Soesilarishius

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