Fufius minusculus, Ortega, Diego Ribeiro Migueis, Nagahama, Roberto Hiroaki, Motta, Paulo Cesar & Bertani, Rogerio, 2013

Ortega, Diego Ribeiro Migueis, Nagahama, Roberto Hiroaki, Motta, Paulo Cesar & Bertani, Rogerio, 2013, Three new species of Fufius Simon, 1888 (Araneae, Cyrtaucheniidae) from Brazil with the redescription of Fufius funebris Vellard, 1924 and description of the female of Fufius lucasae Guadanucci & Indicatti, 2004, ZooKeys 352, pp. 93-116 : 103-104

Fufius minusculus sp. n. Figs 27-36, 45

Diagnosis.

Male and female differ from those of all other species by carapace at least 1.5 times longer than wide and small sternal sigillae (Figs 32-36).

Etymology.

The specific name refers to the tiny size of the species.

Types.

Holotype male from Brazil, Tocantins, Mateiros, Jalapão [10°32'S, 46°24'W], 01 November 2004, S. Balbino, with pitfall trap (DZUB 3416). Paratype: female from Brazil, Tocantins, Palmas, km 1.5 on the railway TO-010 (Palmas-Lajeado) [10°09'S, 48°18'W], 3 November 2001, I. Knysak & R. Martins (IBSP 9695).

Additional material examined.

BRAZIL: Tocantins: Palmas [10°10'S, 48°19'W], 2 immatures, 30 September 2001, I. Knysak & R. Martins (IBSP 9689).

Male description

(DZUB 3416). Total length: 5.11. Carapace 2.42 long, 1.60 wide, chelicerae 1.09 long, 0.60 wide. Palp: femur 1.24/ patella 0.66/ tibia 0.86/ tarsus 0.46/ total 3.22. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 1.88, 1.07, 1.39, 1.41, 0.95, 6.70. II: 1.61, 0.93, 1.31, 1.30, 0.97, 6.12. III: 1.14, 0.78, 0.70, 0.98, 0.35, 3.95. Leg IV missing. Mid-widths (lateral): femora I–III = 0.40, 0.38, 0.51, palp = 0.31; patellae I–III = 0.38, 0.32, 0.38, palp = 0.34; tibiae I–III = 0.49, 0.23, 0.30, palp = 0.44; metatarsi I–III = 0.27, 0.19, 0.18; tarsi I–III = 0.21, 0.13, 0.18, palp = 0.26. Abdomen 2.41 long, 1.29 wide. Spinnerets: PMS, 0.25 long, 0.15 wide, 0.13 apart; PLS, 0.34 basal, 0.22 middle, 0.28 distal; mid-widths (lateral), 0.26, 0.20, 0.15, respectively. Carapace (Fig. 35): length to width 1.51. Fovea slightly recurved, 0.37 wide. Eyes: tubercle 0.19 high, length 0.32, width 0.50. Clypeus 0.02. Anterior and posterior eye row recurved. Eyes sizes and inter-distances: AME 0.14, ALE 0.14, PME 0.05, PLE 0.11, AME–AME 0.05, AME–ALE 0.04, PME–PME 0.23, PME–PLE 0.02, ALE–PLE 0.03, AME–PME 0.05, ALE–ALE 0.34, PLE–PLE 0.31. Eye group width 0.54, length 0.26. Maxillae (Fig. 36) 0.59 long, 0.80 wide. Cuspules: 12 spread over ventral inner heel. Labium: 0.31 long, 0.52 wide, with 2 cuspules. Labio-sternal groove shallow, flat, sigillae not evident. Sternum: 1.44 long, 1.13 wide. Sigillae: first, second pairs small, rounded, less than one diameter from margin. Third small, oval, one diameter from margin. Chelicerae: basal segment with 6 teeth. Legs: leg formula: I II III (legs IV missing). Scopula: tarsi I–II scopulate. Metatarsi III ascopulate (leg IV missing). Spines: palp: femur p-0-0-1, patella 0, tibia 0; leg I: femur d1-0-0, patella 0, tibia v1-1-0, metatarsus v0-0-ap1, p0-0-ap1; leg II: femur d 1-0-0, patella 0, tibia v 1-1-1ap, metatarsus v1-1-1ap; leg III: femur v1-0-0, patella p4, tibia d1-0-1, r0-0-1ap, v0-1-2ap, p0-0-1ap, metatarsus d1-3-2(1ap), r0-0-1ap, v1-2-2ap, p0-1-1. Leg IV missing. ITC smooth, STC with two rows of 5-8 teeth on both margins on all legs. Palp (Figs 27-28): embolus 0.46 in length. Embolus basal, middle, distal width of 0.22, 0.02, 0.01, respectively. Tegulum 0.24 long. Tibial spur (29-31) formed by single branch 0.28 long, 0.22 wide, on retrolateral margin, with apical spine. Color pattern: carapace, chelicerae reddish brown, darker on cephalic area, carapace margin, chelicerae; sternum, labium, maxillae, coxae of legs and palp light brown; abdomen dark with light brown punctuations on dorsum, larger white spot on central anterior area. Ventrally dark with central area whitish. Spinnerets light brown with dark brown setae. Legs yellowish with black areas on distal femora, most of patellae, tibiae, metatarsi.

Female description

(IBSP 9695). Total length: 5.19. Carapace 3.16 long, 2.18 wide, chelicerae 0.93 long, 0.75 wide. Palp: femur 1.58, patella 0.98, tibia 0.68, tarsus 0.93, total 4.17. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 1.79, 1.15, 1.20, 1.06, 0.77, 5.97. II: 1.32, 0.88, 0.85, 0.98, 0.98, 5.01. III: 1.35, 0.92, 0.64, 0.89, 0.88, 4.68. IV: 1.69, 1.09, 1.56, 1.41, 0.76, 6.51. Mid-widths (lateral): femora I–IV = 0.48, 0.51, 0.56, 0.51, palp = 0.40; patellae I–IV = 0.46, 0.46, 0.45, 0.43, palp = 0.38; tibiae I–IV = 0.44, 0.33, 0.37, 0.38, palp = 0.38; metatarsi I–IV = 0.27, 0.21, 0.23, 0.24; tarsi I–IV = 0.26, 0.22, 0.17, 0.22, palp = 0.29. Abdomen 3.36 long, 2.40 wide. Spinnerets: PMS, 0.40 long, 0.23 wide, 0.35 apart; PLS, 0.65 basal, 0.51 middle, 0.49 distal; mid-widths (lateral), 0.34, 0.28, 0.26, respectively. Carapace (Fig. 32): length to width 1.45. Fovea slightly recurved, 0.45 wide. Eyes: tubercle 0.15 high, length 0.46, width 0.62. Clypeus 0.07. Anterior and posterior eye row recurved. Eyes sizes and inter-distances: AME 0.17, ALE 0.18, PME 0.08, PLE 0.11, AME 0.05, AME–ALE 0.04, PME–PME 0.27, PME–PLE 0.03, ALE–PLE 0.03, AME–PME 0.07, ALE–ALE 0.45, PLE–PLE 0.40. Eye group width 0.63, length 0.29. Maxillae (Fig. 33) 0.72 long, 0.93 wide. Cuspules: ca. 30 spread over ventral inner heel. Labium: 0.45 long, 0.55 wide, with 2 cuspules. Labio-sternal groove shallow, flat, sigillae not evident. Sternum: 1.60 long, 1.23 wide. Sigillae: first, second pairs small, rounded, less than one diameter from margin. Third small, oval, one diameter from margin. Chelicerae: basal segment with 7 teeth. Legs: leg formula: IV I II III. Scopula: tarsi I–II scopulate. Metatarsi I 1/3 scopulate. Spines: palp: femur 0, patellae r1-1-0, tibia v2-2-3ap, r1-1-1ap, p0-0-1, tarsus v2-0-0; leg I: femur p0-0-1ap, patellae p0-0-1ap, tibia v1-1-1ap, metatarsus v1-1-2ap; leg II: femur 0, patellae r1-1-0, tibia v1-1-2, metatarsus v0-3-3(2ap), p0-1-0, r0-0-1; leg III: femur 0, patellae p4, r1, tibia d1-0-0, r0-1-0, v0-2-2ap, p1-1-0, metatarsus d1-3-2ap, r0-0-1, v0-4-2ap, p0-1-0; leg IV: femur 0, patella 0, tibia v0-1-2, r0-1-1, metatarsus d0-0-1ap, r0-1-0, v0-2-1ap, p1-1-1ap. Preening-comb: absent on retrolateral tip of metatarsus IV. Palp with single claw having 8 small teeth on internal margin. ITC smooth, STC with two rows of 5-9 teeth on both margins on all legs. Spermathecae (Fig. 34): two spermathecae having narrow and inward curved stalk, giving origin to two sinuous branches ending in single bulb each. Color pattern: as in male.

Distribution.

Brazil, state of Tocantins (Palmas and Mateiros) (Fig. 45).