Soesilarishius trombetas, 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 : 255-258

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.6069993

persistent identifier

https://treatment.plazi.org/id/038A7A13-FFE8-3B50-19FD-9B1FFC0EFECD

treatment provided by

Plazi

scientific name

Soesilarishius trombetas
status

sp. nov.

Soesilarishius trombetas View in CoL sp. nov.

Figs 21‒28 View FIGURES 21 – 24 View FIGURES 25 – 28

Types. Holotype: Ƌ from Rio Acapu , Floresta Estadual do Trombetas , Oriximiná, Pará, Brazil, 01°07'51.60"S, 56°24'59.40"W, 10–18.X.2014, leg. M.B. Aguiar-Neto et al. ( MPEG 32015 View Materials ) GoogleMaps . Paratypes: 1 Ƌ ( INPA) and 1 ♀ ( MPEG 32016 View Materials ), same data as holotype. GoogleMaps

Etymology. The epithet in apposition is a toponomy after the type locality.

Diagnosis. The male is similar to those of S. aurifrons (Taczanowski, 1878) , S. micaceus , S. paxiuba , S. muiratinga , S. cearensis Ruiz, 2013 , S. bicrescens Ruiz, 2013 and S. laticlavus sp. nov. by having the embolus arising from the median portion of the prolateral bulb ( Fig. 25 View FIGURES 25 – 28 ). It can be distinguished from those of S. muiratinga and S. laticlavus sp. nov. by the slender RTA ( Fig. 26 View FIGURES 25 – 28 ); from those of S. cearensis and S. bicrescens by the initial portion of the embolus extending laterally ( Fig. 25 View FIGURES 25 – 28 ), not proximally; and from those of S. aurifrons and S. paxiuba by the blade-like tip of the embolus, with the median portion membranous ( Fig. 25 View FIGURES 25 – 28 ) (slender in the other two; see Ruiz 2011: fig. 1; Ruiz 2013: fig. 25). The female is similar to that of S. macrochelis Ruiz, 2013 for the simple, short internal duct with no obvious glandular structure, but can be distinguished by the lateral coupling pockets advanced on the epigynal plate and the unmodified spermatheca ( Fig. 28 View FIGURES 25 – 28 ); it is also superficially similar to that of S. crispiventer Ruiz, 2011 by the position of the copulatory openings, but can be distinguished by the position of the coupling pockets.

Description. Male holotype (MPEG 32015). Total length: 2.90. Carapace dark brown, shiny, with cephalic region black ( Fig. 21 View FIGURES 21 – 24 ); 1.57 long, 1.19 wide, 0.90 high. Ocular quadrangle 0.78 long; anterior eye row 1.16 wide, posterior 1.05 wide. Chelicera, labium and sternum dark brown ( Fig. 22 View FIGURES 21 – 24 ). Palp brown, with small projection on distal prolateral part of tibia. Legs 1342; I: femur, patella, tibia and metatarsus brown, tarsus bright yellow; II‒III: femora, patellae and tibiae brown, metatarsi and tarsi yellow; IV as I, with paler tarsus ( Fig. 22 View FIGURES 21 – 24 ). Length of leg I 3.09 (1.07 + 1.21 + 0.81); II 2.50 (0.81 + 0.93 + 0.76); III 3.06 (0.95 + 1.14 + 0.97); IV 2.83 (0.83 + 0.93 + 1.07). Abdomen dorsally dark brown with proximal pair of tufts of white scales and another pair on posterior half ( Fig. 21 View FIGURES 21 – 24 ); dark brown ventrally ( Fig. 22 View FIGURES 21 – 24 ). Spinnerets dark brown.

Female paratype (MPEG 32016). Total length: 3.23. Carapace dark brown, with metallic bluish sheen and tuft of white scales on central region; cephalic region black ( Fig. 23 View FIGURES 21 – 24 ); 1.69 long, 1.12 wide, 0.78 high. Ocular quadrangle 0.81 long; anterior eye row 1.12 wide, posterior 0.97 wide. Chelicera, labium, endite and sternum light brown ( Fig. 24 View FIGURES 21 – 24 ). Palp yellow. Legs 1342; I‒IV yellow. Length of leg I 2.85 (0.90 + 1.14 + 0.81); II 2.35 (0.74 + 0.90 + 0.71); III 2.83 (0.88 + 1.00 + 0.95); IV 2.78 (0.83 + 0.88 + 1.07). Abdomen as in male, lighter, with light areas covered with white scales ( Fig. 23 View FIGURES 21 – 24 ); yellow ventrally ( Fig. 24 View FIGURES 21 – 24 ). Epigyne externally with anterior semicircular copulatory openings and inconspicuous lateral coupling pockets ( Fig. 27 View FIGURES 25 – 28 ); internally with simple ducts leading to medial fertilization ducts ( Fig. 28 View FIGURES 25 – 28 ). Spinnerets yellow.

Note. Male-female matching was established based on co-occurrence and low abundance. It is possible, though, that this female does not belong with this male, or even that it is a theratological specimen. However, the epigyne has all the structures expected to be present in a functional piece (copulatory openings and ducts, fertilization ducts and even coupling pockets). Hence, we take the chance to describe this female as the possible female of this species.

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

MPEG

Museu Paraense Emilio Goeldi

INPA

Instituto Nacional de Pesquisas da Amazonia

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Soesilarishius

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