Stemmops carauari, Santanna & Rodrigues, 2018

Santanna, Manoela & Rodrigues, Everton Nei Lopes, 2018, Five new species and new records of the spider genus Stemmops (Araneae, Theridiidae, Spintharinae) from Brazil, Zootaxa 4524 (2), pp. 174-186 : 177-178

Stemmops carauari new species

Fig. 4 , 12 , 25

Type material. Holotype, BRAZIL: Amazonas, Carauari, Porto Urucu, Base de Operações Geológicas Pedro de Moura , 4°52’16”S– 65°20’4”W, IX.2006, N. F. Lo Man Hung leg., pitfall-trap, 1M ( MCN 44857); Minas Gerais, Matozinhos, Mocambeiro, 19°30’55”S– 44°06’40”W, 16–26.X.2012, Equipe Carste leg., 1M ( IBSP 189580 ); Rio de Janeiro, Pinheiral, Fazenda Santa Helena, 22°34’S– 44°21’W, 05–11.XI.1999, E. Folly leg., 1M ( IBSP 215207 ).

Etymology. The species name is a noun in apposition taken from the type locality.

Diagnosis. The male of Stemmops carauari new species resembles that of S. bicolor O. Pickard-Cambridge, 1894 (see Levi 1955, figs. 17, 18) by the embolus not coiled, and by the shape of embolus base and theridiid tegular apophysis ( Fig. 4 ), but differ by the embolus short with trajectory of the embolus that loops far from the tegulum edge ( Fig. 4 ), in S. bicolor embolus long, partly covering cymbium margin in ventral view, and by the shape of the apex of conductor ( Fig. 4 ), wider in S. bicolor (see Levi 1955, fig. 18).

Description. Male holotype (from Base de Operações Geológicas Pedro de Moura, MCN 44857): Total length 1.55. Carapace: length 0.69, width 0.71. Clypeus height: 0.12. Sternum: length 0.44, width 0.42. Chelicerae: length 0.21, width 0.06. Abdomen: length: 0.84, width 0.75, height 0.73. Leg formula I/IV/II/III. Segment length (I/II/III/ IV): femora 1.05/0.75/0.73/1.05; patellae+tibiae 1.28/0.73/0.67/1.05; metatarsi+tarsi 1.13/0.98/0.92/1.32; total: 3.69/2.47/2.33/3.42. Palp: femora 0.21, patellae 0.08, tibiae 0.10, cymbium 0.35. All eyes of the same size. AME separated from each other by 0.06, PME by 0.02, PME-PLE 0.02. Carapace yellow with brown dots ( Fig. 12 ), darkened in median portion after PME. Clypeus concave, laterally. Chelicerae yellow. Labium subtriangular, yellow. Endites yellow. Ocular region dark except between PME. Sternum brown, with dark dots. Legs pale yellow. Abdomen oval ( Fig. 12 ), dark grey with a pale yellow spot above spinnerets, venter grey.

Female. Unknown.

Variation. (n= 3) Total length: 1.55–2.05; carapace: length 0.69–0.88; width: 0.71–0.73, Femur leg I length: 1.05–1.36.

Distribuition. Brazil (Amazonas, Rio de Janeiro and Minas Gerais, Fig. 25 ) .

Figures

FIGURE 25. Distribution of the new species of genus Stemmops in Brazil: Stemmops carajas new species, Stemmops carauari new species and Stemmops guapiacu new species.

FIGURES 1–4. Stemmops murici new species: 1, Male: Palp, ventral. 2–3, Female: 2, Epigynum, ventral, 3, Dorsal, clarified. Stemmops carauari new species: 4, Male: Palp, ventral. Scale bars, 0.25 mm.

FIGURES 10–23. Body, dorsal view. Stemmops murici new species: 10, Male, 11, Female. Stemmops carauari new species: 12, Male. Stemmops carajas new species: 13, Male, 14, Female. Stemmops pains new species: 15, Male. Stemmops guapiacu new species: 16, Female. Stemmops belavista Marques & Buckup, 1996: 17, Female. Stemmops carius Marques & Buckup, 1996: 18, Female, 19, Male. Stemmops servus Levi, 1964: 20, Male, 21, Female. Stemmops vicosa Levi, 1964: 22, Male, 23, Female. Scale bars, 0,5mm.