Typhochlaena amma, Bertani, Rogerio, 2012

Bertani, Rogerio, 2012, Revision, cladistic analysis and biogeography of Typhochlaena C. L. Koch, 1850, Pachistopelma Pocock, 1901 and Iridopelma Pocock, 1901 (Araneae, Theraphosidae, Aviculariinae), ZooKeys 230, pp. 1-94 : 15-16

Typhochlaena amma sp. n. Figs 8-11, 24, 28

Diagnosis.

The male differs from those of Typhochlaena seladonia by shorter and broader embolus (Figs 8-10). Differs from Typhochlaena costae sp. n. by the embolus longer and stouter. The females differ by the strongly curved spermathecae, diverging, in their basal portion (Fig. 11). Additionally, the females have cephalothorax and legs covered with dark setae having a blue metallic sheen under light, abdomen black ventrally and dorsally with a central pinkish stripe having zigzag border (Fig. 24). The males are light brown and the abdomen is black with a dorsally pale stripe similar in shape to that of the female.

Etymology.

The specific name refers to the project AMMA - arachnids and myriapods from Brazilian Atlantic rainforest carried out by the arachnologists from Museu Nacional, Rio de Janeiro, who collected the types.

Types.

Holotype female, Brazil, Espírito Santo, Santa Teresa, Estação Ecológica de Santa Lúcia [19°58'S, 40°32'W], 672 m.a.s.l, A. P. L. Giupponi, February 2008 (MNRJ 06239); Paratype female, same locality, A. Pérez Gonzalez, January 2005 (MNRJ 06240); Paratype male, same locality, no further data (MNRJ 12926); Paratypes 2 males, Domingos Martins, Pico do Eldorado [20°22'S, 40°39'W], M. T. Tavares et al., 13 December 2004 (IBSP 13005).

Additional material examined.

None.

Description.

Holotype female (MNRJ 06239). Carapace 10.3 long, 10.3 wide, chelicerae 5.1. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 7.3, 5.4, 5.7, 4.5, 2.8, 25.7. II: 7.1, 4.8, 5.1, 4.5, 2.7, 24.2. III: 6.3, 4.5, 5.0, 4.7, 3.0, 23.5. IV: 7.9, 4.6, 6.8, 6.4, 2.9, 28.6. Palp: 5.1, 3.5, 3.4, -, 3.5, 15.5. Mid-widths (lateral): femora I–IV =2.5, 2.6, 2.6, 2.4, palp = 2.0; patellae I–IV = 2.3, 2.3, 2.2, 2.2, palp = 1.9; tibiae I–IV = 2.3, 2.3, 2.1, 2.0, palp = 2.0; metatarsi I–IV = 1.9, 2.0, 1.6, 1.2; tarsi I–IV = 1.6, 1.8, 1.6, 1.4, palp = 1.9. Abdomen 12.0 long, 8.9 wide. Spinnerets: PMS, 1.6 long, 0.7 wide, 0.2 apart; PLS, 1.6 basal, 0.9 middle, 1.0 domed distal; mid-widths (lateral), 1.2, 1.0, 0.6, respectively. Carapace: length to width 1.0. Fovea 1.8 wide. Eyes: tubercle 0.1 high, 1.1 long, 1.8 wide. Clypeus 0.3. Anterior eye row procurved, posterior slightly recurved. Eye sizes and inter-distances: AME 0.5, ALE 0.5, PME 0.3, PLE 0.5, AME–AME 0.6, AME–ALE 0.3, AME–PME 0.2, ALE–ALE 1.9, ALE–PME 0.5, PME–PME 1.6, PME–PLE 0.1, PLE–PLE 2.1, ALE–PLE 0.5, AME–PLE 0.6. Ratio of eye group width to length 2.3. Maxillae: length to width: 1.8. Cuspules: 51 spread over ventral inner heel. Labium: 1.7 long, 2.0 wide, with 79 cuspules spaced by one diameter from each other on the anterior third. Labio-sternal groove shallow, flat, sigilla not evident. Chelicerae: basal segments with 7 teeth well spaced from each other. Sternum: 4.7 long, 4.3 wide. Leg formula: IV I II III. Scopula: tarsi I–III fully scopulate, IV divided by six wide row of setae. Metatarsi I–II 4/5 scopulate; III 1/2, IV 1/4 distal scopulate. IV divided by six wide row of setae. Spines absent on all legs and palps. Urticating hairs type II (0.42 to 0.56 long, 0.01 wide) on the abdomen dorsum. Genitalia: paired spermathecae curving abruptly outwards from their base (more than 90°) and with a partial division of their apex into two lobes (Fig. 11). Color pattern: carapace, chelicerae, sternum, maxillae and legs covered with dark setae having a blue metallic sheen under light. Legs, mainly ventrally, with long chestnut-brown setae. Longitudinal stripes on femora, patellae, tibiae and metatarsi inconspicuous. Distal femora, patellae, tibiae and metatarsi with white rings. Abdomen black ventrally and dorsally with a central pinkish stripe having zigzag border (Fig. 24).

Description.

Paratype male (MNRJ 12926). Carapace 7.3 long, 7.7 wide, chelicerae 3.2. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 8.9, 4.4, 7.7, 6.7, 3.0, 30.7. II: 7.8, 4.2, 6.9, 6.0, 2.6, 27.5. III: 6.0, 3.5, 5.1, 4.8, 2.4, 21.8. IV: 8.1, 4.0, 7.8, 7.2, 2.4, 29.5. Palp: 4.6, 2.9, 3.5, -, 1.6, 12.6. Mid-widths (lateral): femora I–IV = 1.1, 1.4, 1.8, 1.1, palp = 0.8; patellae I–IV = 1.5, 1.5, 1.4, 1.6, palp = 1.1; tibiae I–IV = 1.3, 1.1, 1.5, 1.4, palp = 1.3; metatarsi I–IV = 1.1, 1.0, 1.0, 0.9; tarsi I–IV = 1.0, 1.1, 1.0, 0.9, palp = 1.1. Abdomen 6.6 long, 3.8 wide. Spinnerets: PMS, 0.8 long, 0.4 wide, 0.1 apart; PLS, 1.1 basal, 0.6 middle, 0.6 domed distal; mid-widths (lateral), 0.6, 0.5, 0.3, respectively. Carapace: length to width 0.95. Fovea 1.4 wide. Eyes: tubercle 0.6 high, 1.4 long, 2.3 wide. Clypeus 0.1. Anterior eye row procurved, posterior slightly recurved. Eye sizes and inter-distances: AME 0.5, ALE 0.5, PME 0.2, PLE 0.3, AME–AME 0.3, AME–ALE 0.3, AME–PME 0.2, ALE–ALE 1.6, ALE–PME 0.5, PME–PME 1.4, PME–PLE 0.1, PLE–PLE 1.7, ALE–PLE 0.3, AME–PLE 0.5. Ratio of eye group width to length 2.3. Other characters as in female, except: maxillae: length to width: 1.9. Cuspules: 40 spread over ventral inner heel. Labium: 0.9 long, 1.5 wide, with 71 cuspules spaced by one diameter from each other on the anterior half. Chelicerae: basal segments with seven teeth spaced by at least one diameter from each other. Sternum: 3.4 long, 3.2 wide. Legs: leg formula: I IV II III. Scopula: tarsi I–IV fully scopulate, IV divided by six wide row of setae. Metatarsi I–II 4/5 scopulate; III 1/2 distal scopulate; IV 1/4 distal scopulate. IV divided by six wide row of setae. Urticating hairs type II (0.51 to 0.70 long, 0.01 wide) on the abdomen dorsum. Palp: embolus 2.2 long, with a 60° curvature retrolaterally. Embolus basal, middle and distal width of 0.3, 0.2 and 0.05, respectively. Tegulum 0.9 long. (Figs 8-10). Color pattern: (specimen is preserved and faded) carapace, chelicerae, palps, legs, sternum and labium are light brown. Abdomen black with a dorsally pale stripe similar in shape to the female.

Distribution.

Known only from Santa Teresa and Domingos Martins, in the mountain range of state of Espirito Santo, Brazil (Fig. 28).