Guyruita giupponii, Fukushima & Bertani, 2018

Fukushima, Caroline Sayuri & Bertani, Rogério, 2018, Two new species of Guyruita Guadanucci et al., 2007 (Araneae, Theraphosidae) from Brazil, Zootaxa 4370 (4), pp. 395-408 : 403-406

Guyruita giupponii n. sp.

( Figs 3 , 9 , 30−34 , 36 , 39 )

Diagnosis. Males resembles those of G. atlantica in that the abdomen lacks a conspicuous black spot or stripe. They can be distinguished from those of G. atlantica by the abdomen having a faded grey stripe ( Fig. 9 ), a short embolus less than twice the tegulum length, in retrolateral view ( Fig. 31 ), the tibial apophysis with retrolateral lobe very curved ( Fig. 32 ) and metatarsus I touching apex of prolateral, shorter lobe of tibial apophysis when folded. Females are unknown.

Etymology. The species is named named after arachnologist Alessandro Giupponi, for his friendship and help in many collecting expeditions, and for collecting and making important theraphosid specimens available for this study.

Material examined. Brazil: Espírito Santo: Holotype male, Sooretama, Reserva Biológica de Sooretama (18o59’S, 40o07’W), Equipe Arachne , 21 April 2006, ref. 960 ( MNRJ 6969 ) ; male paratype, 20 April 2006, ref. 959, (MNRJ 6970).

Male. MNRJ 6969. Carapace: 6.31 long, 5.40 wide. Chelicerae 2.04 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 6.28, 3.72, 4.72, 3.66, 3.08, 21.46, II: 5.13, 2.82, 3.69, 3.00, 2.59, 17.23. III: 4.34, 2.30, 3.09, 3.44, 2.55, 15.72. IV: 6.17, 2.74, 4.76, 5.10, 3.07, 21.84. Palp: 3.66, 1.68, 2.73, –, 1.61, 9.68. Midwidths: femora I–IV= 0.97, 0.87, 1.34, 1.02, palp= 0.86; patellae I–IV= 1.02, 0.94, 0.95, 0.97, palp= 0.80; tibiae I–IV= 0.79, 0.80, 0.85, 0.73, palp= 0.80; metatarsi I–IV= 0.67, 0.66, 0.55, 0.54; tarsi I–IV= 0.62, 0.62, 0.53, 0.56, palp= 0.82. Abdomen: 6.39 long, 3.77 wide. Spinnerets: PMS, 1.01 long, 0.27 wide, 0.46 apart; PLS, 1.43 basal, 1.20 middle, 1.63 distal; midwidths 0.50, 0.42, 0.38, respectively.

Carapace: 1.16 times longer than wide; cephalic region slightly raised, thoracic striae inconspicuous.

Fovea: Straight, deep, 0.55 wide. Clypeus 0.21. Eyes: Tubercle 0.65 high, 0.61 long, 1.16 wide. Anterior row slightly procurved. Posterior row straight. Eye size and interdistances: AME 0.31, ALE 0.33, PME 0.22, PLE 0.26, AME–AME 0.09, AME–ALE 0.09, AME–PME 0.08, ALE–ALE 0.72, ALE–PME 0.20, PME–PME 0.59, PME– PLE 0.03, PLE–PLE 0.96, ALE–PLE 0.07, AME–PLE 0.21. Maxillae: 1.38 longer than wide; ca. 133 cuspules over ventral inner heel. Labium: 0.77 long, 1.18 wide, with ca. 181 cuspules on anterior half, each separated by one diameter. Labio-sternal groove large, shallow, flattened; sigilla large. Chelicerae: Basal segment with 9 teeth and some small teeth on promargin. Sternum: 2.91 long, 2.79 wide. Sigilla: three pairs, anterior and median rounded, one diameter from margin; posterior large, fusiform, one diameter from margin. Legs: Formula: IV=I, II, III. Length leg IV to leg I: 1.0. Clavate trichobothria: distal 2/3 of tarsi I–IV. Scopula: Tarsi I–IV fully scopulate, III–IV divided by narrow band of setae. Metatarsi I–II for distal 1/2; III for distal 1/3; IV, for distal 1/ 4. III–IV divided by band of setae. ITC absent. Spines: Leg I: Fe p0-0-1; Pa 0; Ti 0; Me v0-0-1ap; Leg II: Fe 0; Pa 0; Ti v0-0-2ap; Me v0-0-1ap; Leg III Fe 0; Pa p1; Ti v0-0-2ap, p0-0-1, r0-0-1; Me v0-2-3ap, p0-1-1, r0-1-1; Leg IV Fe 0; Pa 0; Ti v0- 0-2ap, p0-1-1, r0-1-1; Me v1-2 -3ap, p0-1-1, r0-1-1; Palp: Fe p0-0-1, Pa 0, Ti v0-0-1. Palp ( Figs 30−31 ): Globous bulb with small subtegulum. Embolus: long, not flattened, lacking keels, 0.85 long in retrolateral view, less than twice tegulum length. Thin distal width, tapering distally; basal, middle and distal widths 0.35, 0.11, 0.01, respectively. Tegulum: 0.46 long, 0.65 high in retrolateral view. Cymbium rectangular with subequal lobes, lacking well developed process on retrolateral lobe. Tibial apophysis ( Figs 32−34 ): two lobes on prolateral leg I, with welldeveloped base, slightly ventro-retrolaterally positioned. Prolateral lobe shorter, with spine of same size as lobe on retrolateral face. Retrolateral lobe longer, curved inward, with small spine on apex of dorsal face. Metatarsus I straight, touches apex of prolateral, shorter lobe of tibial apophysis when folded.

Color pattern ( Fig. 3 ): carapace reddish brown with greyish setae. Coxae, labium, sternum, maxillae, and ventral femora brown. Legs and palps with greyish, short body setae with discrete golden sheen and greyish, long setae. Leg rings on distal femora, tibiae and metatarsi absent. Abdomen dorsum with long, light brown setae uniformly distributed and short darker body setae forming faded irregular longitudinal spot in central area ( Fig. 9 ). Abdomen venter light brown.

Color pattern ontogeny. Unknown.

Natural History. The Reserva Biológica de Sooretama is a conservation unit in the coastal Brazilian Atlantic forest in the north of state of Espírito Santo. This region, along with a south area of state of Bahia, is known as ‘Hiléia Baiana’ due to its resemblance to the Amazon Forest ( Andrade-Lima 1966). The Hiléia has one of the most diverse and rich biotas on the planet, with high levels of endemism in many taxonomic groups ( Pacheco et al. 1996; Thomas et al. 1998; Bertani & Fukushima 2009). The RESBIO Sooretama is a conservation area with the highest number of threatened or near-extinction faunal species in Brazil (Conselho Nacional da Reserva da Biosfera da Mata Atlântica 2013).

Distribution. Brazil, state of Espírito Santo ( Fig. 39 ).

Figures

FIGURE 39.Map showing Guyruita spp. records.? = dubious record.

FIGURES 1-6. Guyruita spp. habitus. 1-2 Guyruita isae n. sp., from Martins, state of Rio Grande do Norte, Brazil. 1. Male (MNRJ 6992). 2. Female (MNRJ 6985). 3. Guyruita giupponii n. sp., from Estação Ecológica de Sooretama, state of Espírito Santo, Brazil, male. 4. Guyruita atlantica, from Murici, state of Alagoas, Brazil, male. 5-6 Guyruita cerrado. 5. male from Catalão, state of Goiás, Brazil.6. Female from Peixe,state of Tocantins, Brazil.Photos:R. Bertani.

FIGURES7-10.Guyruita spp.abdomen,preserved males.7. Guyruitaisae n. sp., holotype(MNRJ 6983) 8. Guyruitacerrado (MNRJ 6971) 9. Guyruita giupponiin.sp.,holotype (MNRJ 6969).10. Guyruitaatlantica (MNRJ 6982).Scale = 1 mm.Arrow = dark stripe.

FIGURES 30-34. Guyruita giupponii n. sp., male holotype (MNRJ 6969). 30-31 palpal bulb, left side. 30. prolateral 31. retrolateral. 32-34. Tibial apophysis on leg I, left side. 32. ventral 33. prolateral 34. retrolateral. Scale bar = 1 mm.

FIGURES35-38. Guyruita spp., palpal bulb, dorsal view, left side. 35. G.isae n.sp., holotype (MNRJ 6983).36. G.giupponii n. sp., holotype (MNRJ 6969). 37. G.atlantica (MNRJ 6982).38. G. cerrado (MNRJ 6971). Scale bar = 1 mm.