Stenoterommata pescador, Indicatti, Rafael P., Chavari, João L., Zucatelli-Júnior, Maurílio, Lucas, Sylvia M. & Brescovit, Antonio D., 2017

Indicatti, Rafael P., Chavari, João L., Zucatelli-Júnior, Maurílio, Lucas, Sylvia M. & Brescovit, Antonio D., 2017, Six new species of silk-lined burrow spider genus Stenoterommata Holmberg, 1881 (Araneae, Nemesiidae) from southern Brazil, Zootaxa 4254 (4), pp. 435-456 : 450-451

Stenoterommata pescador sp. nov.

( Figs 6 , 54, 55 )

Types. Female holotype from Parque Municipal da Lagoinha do Leste, 40 m asl, 27°47'16.30"S, 48°30'25.30"W, Pântano do Sul Beach , Santa Catarina Island, Florianópolis, Santa Catarina , Brazil, 27–31.viii.2014, R.P. Indicatti, J.L. Chavari & Y. Lemos coll. ( IBSP 166232 ) . Paratypes: same data as holotype, 1 female ( IBSP 166233 ) ; 4– 12.i.2015, R.P. Indicatti & B. Gambaré coll., 2 females (IBSP 166473; 166474).

Additional material examined. BRAZIL, Santa Catarina: Florianópolis , Santa Catarina Island (Parque Municipal da Lagoinha do Leste, 40 m asl, 27°47'16.30"S, 48°30'25.30"W), 27–31.viii.2014, R.P. Indicatti, J.L. Chavari & Y. Lemos coll., 1 female ( IBSP 166234 ) ; 11 females, 2 juveniles, 4–12.i.2015, R.P. Indicatti & B. Gambaré coll. (IBSP 166475–166480); (Parque Municipal da Lagoinha do Leste, 107 m asl, 27°46'40.91"S, 48°29'31.41"W), 4–12.i.2015, R.P. Indicatti & B. Gambaré coll., 3 females, 1 juvenile (IBSP 166481).

Diagnosis. Females of S. pescador sp. nov. resemble those of S. tenuistyla and S. sevegnaniae sp. nov. by the spermathecae with a reduced basal dome, but can be distinguished by having two long receptacula ducts ( Figs 54, 55 ).

Etymology. The specific name honors the native inhabitants of the Pântano do Sul Beach in the southern Santa Catarina Island, Florianópolis, Santa Catarina, Brazil. Pescador is taken from the Portuguese language and means fisherman. The Pântano do Sul Beach is characterized by one of the oldest fishering villages in the Santa Catarina Island ( Melo et al., 2008).

Description. Female (holotype). Color pattern and pubescence in ethanol: carapace and femora dark brown, patellae–tarsi brown yellowish. Body with light pubescence, covered with golden setae. Abdomen dorsally brown yellowish with symmetric small brown spots, and one longitudinal wide central brown strip. In living specimen: carapace and femora I–IV dark brown and patellae–tarsi reddish-brown. Abdomen dorsally brown with one longitudinal central brown wide strip slightly darker than lateral ( Fig. 6 ). Total length 19.05. Carapace 7.73 long, 5.62 wide, with short, procurved fovea ( Fig. 6 ). Abdomen 8.42 long, 6.01 wide. Thoracic region slightly raised. Clypeus narrow, 0.31 ( Fig. 6 ). Eye tubercle weakly elevated, wider than long. Anterior eye row procurved, posterior recurved. Eye sizes: AME 0.42, ALE 0.40, PME 0.25 and PLE 0.35. Chelicerae with eight teeth in prolateral row, with ca. 25 basal smaller teeth and rastellum weak, formed by long thin setae. Labium 0.82 long, 1.34 wide, with one cuspule. Maxillae with ca. 160 blunt cuspules on internal basal angle. Serrula absent. Sternum oval 4.43 long, 3.21 wide. Sternal sigilla small, granulate, marginal: anterior and median rounded, posterior ovalelongated, twice the size of anterior, away from margin by ca. one length. Palp: measurements: femur 3.58/ patella 1.70/ tibia 2.41/ tarsus 2.02/ total 9.71; spination: tibia v0-1r-0-2ap, p0-2-1, tarsus v1 r-0-0. Legs: measurements: I: femur 4.72/ patella 3.70/ tibia 3.90/ metatarsus 3.12/ tarsus 2.20/ total 17.64; II: 4.50/ 3.00/ 3.11/ 2.91/ 2.10/ 15.62; III: 3.79/ 2.50/ 2.60/ 2.69/ 2.20/ 13.78; IV: 5.60/ 3.11/ 4.20/ 4.82/ 2.40/ 20.13; spination: I: metatarsus v0-1-0-0- 1ap; II: tibia d0-0-1-0, metatarsus v0-2-0-2ap, p0-1-0-0; III: patella p0-1-1-2-0-1, r0-0-1-0, tibia d0-1-0, v2 ap, p0- 1-0-1-0, r0-1-0, metatarsus d0-1r-1p-1p-0-2, v0-2-0-2-0-3ap, p2-1-1-1-1; IV: patella r0-1-0, tibia v2 ap, p0-0-1, r0- 1-0-1-0, metatarsus d0-2-2-2-0-2, v0-2-0-0-2-1-3ap, p0-1-0-1-0-1-0, r0-1-0-1-0-0. Metatarsal preening combs: II: 7VP, 2VR; III: 8VP, 6VR; IV: 3VP, 5VR. Tarsi II–IV flexible. Scopulae on tarsi I–IV very dense and symmetric. Scopulae on tarsi I, II undivided, III, IV divided by 4–5 rows of thicker setae. Scopulae for full length of metatarsi I, II; absent on III, IV. STC large with double row of teeth: I: 3, 5, 5, 3; II: 4, 4, 5, 4; III: 4, 3, 4, 3; IV: 4 on each row. ITC on tarsus IV. Palpal claw with four teeth on promargin. Trichobothria and tarsal organ as in S. pavesii sp. nov. Four spinnerets: PLS: basal segment 0.90, median segment 0.80, apical segment triangular 0.40 long. Spigots as in S. pavesii sp. nov. Spermathecae formed by two receptacula on each side ( Figs 54, 55 ).

Male. Unknown.

Variation. Females (n=8): total length 15.60–20.60; carapace 6.20–8.10 long; maxillae with 152–165 cuspules. Dorsal abdomen brownish yellow with small brown spots forming a discrete chevron.

Distribution. Southern Brazil, state of Santa Catarina, Santa Catarina Island.

Figures

FIGURES 1 – 6. Stenoterommata spp. from eastern Santa Catarina state, Brazil. 1, 3 – 6. Habitus. 1, 2. Stenoterommata pavesii sp. nov., female (IBSP 166059) from Parque Nacional da Serra do Itajaí (PNSI), Blumenau. 2. Spider burrow, frontal view. 3, 4. Stenoterommata gugai sp. nov. from Parque Municipal da Lagoinha do Leste, Santa Catarina Island, Florianópolis. 3. Male (IBSP 166213). 4. Female (IBSP 166212). 5. Stenoterommata leticiae sp. nov., female (IBSP 166201) from PNSI. 6. Stenoterommata pescador sp. nov., female (IBSP 166232) from Pântano do Sul, Santa Catarina Island, Florianópolis. Photos: R. P. Indicatti.

FIGURES 49 – 55. Stenoterommata spp. 49 – 53. Stenoterommata sevegnaniae sp. nov. 49 – 51. Male holotype, left palpal bulb. 49. Prolateral view. 50. Dorsal view. 51. Retrolateral view. 52, 53. Female, spermathecae, paratype IBSP 114756. 52. Dorsal view. 53. Frontal view. 54, 55. Stenoterommata pescador sp. nov., female holotype, spermathecae. 54. Dorsal view. 55. Frontal view. Abbreviations: bd = spermathecal basal dome; du = receptaculum duct; r = receptaculum; sb = spermathecal base. Scale bars: Figs 49, 51 – 55 = 1 mm; Fig. 50 = 0.5 mm.