Bioacoustics of Aguapanela arvi

Description. Male ( holotype ICN-Ar 7914) ( Fig. 29 ). Total length, not including chelicerae or spinnerets 27; including chelicerae 30.2. Carapace length 13.8, width 13.5. Abdomen length 12.2. PLS: basal length 2.1, medial 1.9, distal 1.8. PMS length 1.7. Anterior eye row slightly procurved, posterior slightly recurved. Eyes sizes and interspaces: AME 0.3, ALE 0.53, PME 0.33, PLE 0.47, AME–AME 0.47, AME–ALE 0.13, ALE–ALE 1.23, PME–PME 1.1, PME–PLE 0.07, PLE-PLE 1.5, AME-PME 0.23, ALE-PLE 0.27. OQ elevated, sub-rectangular, surrounded by black setae, length 1.56, width 2.13, clypeus 0.06. Fovea transverse deep, straight, width 3.2. Cephalic area slightly raised, thoracic striae conspicuous with black setae ( Fig. 14 ). Basal segment of chelicerae with 11 well-developed teeth on furrow promargin and 6/8 (left/right) small teeth on proximal area of furrow; intercheliceral tumescense absent. Labium trapezoidal, length 1.63, width 2.7, with 8 cuspules ( Fig. 15 ). Maxillae sub-rectangular, with 46/79 (left/right) cuspules restricted to proximal prolateral angle ( Fig. 13 ). Labio-sternal junction wide in middle ( Fig. 13 ). Sternum length 5.4, width 5.8, with 3 pairs of sigilla. Sigilla oval, anterior pair smaller, posterior pair larger, separated from margin by their diameter ( Fig. 13 ). Tarsal scopula: I–IV densely scopulated; I and II entire; III entire but with few dispersed longer conical setae; IV divided by medial strip of longer conical setae. Paired claws with teeth on proximal half and central axis: I, 1 tooth; II, 3 teeth; III and IV, 4 teeth. Metatarsal scopula extent: I and II scopulate on distal 1/3; III less than distal 1/4; IV not scopulate. Palpal tibia elongate with long spines ( Fig. 23 ). Metatarsus I straight. Tibia I without apophysis ( Figs 21–22 ). Stridulatory setae ( Figs 1–12 ): plumose setae on prolateral coxae I–II, trochanters I–-II, femora I–II and retrolateral palpal coxa and trochanter, very few; thorns setae on retrolateral maxilla and coxa I. Stridulatory setae thicker on coxae, thinner on trochanter and smaller on femur; femur I extended proximal half, II proximal 1/3. Urticating setae: type III and IV present, and urticating setae of intermediate length and morphology between III and IV; type III located lateral of urticating setae patch and type IV on medial. Cymbium bilobed. Palpal bulb ( Figs 17–20, 24–27 ): subcylindrical, subtegulum less extended than usual in Theraphosinae , elongated curved embolus, ventrally concave, with two prolateral keels (PI and PS) very flat and developed on dorsal edge, PI sub-apically truncated. Colour (in vivo): cephalothorax, abdomen and legs black, femur darker; legs with reddish long setae. Abdomen ornamented with red long setae and dark patch of urticating setae. Spination (proximal to distal): femur: palp: 0V, 0D, 0-0-1P, 0R; I: 0V, 0D, 0-0-2P, 0R; II: 0V, 0D, 0-0-2P, 0R; III 0V, 0D, 0-0-1P, 0-0-1R; IV: 0V, 0D, 0-0-1P, 0-0-2R. Patella: palp: 0V, 0D, 0P, 0R; I: 0V, 0D, 0-1-0P, 0R; II: 0V, 0D, 0-1-0P, 0R; III: 0V, 0D, 0-1-0P, 0R; IV: 0V, 0D, 0P, 0R. Tibia: palp: 0-2- 2V , 0D, 1-4-1P, 0R; I: 2-4- 6V , 0D, 0-2-2P, 1-3-3R; II: 3-2- 2V , 0D, 0-3-3P, 0-3-2R; III: 1-2- 4V , 0D, 0-4-1P, 0-3-1R; IV: 0-3- 4V , 0D, 0-4-1P, 1-4-2R. Metatarsus: I: 0-6- 5V , 0D, 1-1-2P, 1-1-1R; II: 0-5- 3V , 0D, 1-3-2P, 1-1-1R; III: 2-4- 5V , 0-0-1D, 1-4-3P, 1-3-4R; IV: 2-9-10V , 0D, 0-3-4P, 1-3-4R. Tarsus: palp and legs: 0. Legs and palpal segments lengths in Table 2 . Female (allotype ICN-Ar 7915) ( Fig. 30 ). Total length, not including chelicerae or spinnerets 28.5; including chelicerae 33. Carapace length 13.4, width 12.8. Abdomen length 14.6. PLS: basal length 2.4, medial 1.45, distal 1.8. PMS length 1.25. Anterior eye row procurved; posterior, slightly recurved. Eyes sizes and interspaces: AME 0.43, ALE 0.5, PME 0.43, PLE 0.46, AME–AME 0.37, AME–ALE 0.2, ALE–ALE 1.13, PME–PME 1.07, PME- PLE 0.07, PLE–PLE 1.43, AME–PME 0.1, ALE–PLE 0.3. OQ elevated sub-rectangular, surrounded by black setae, less than in male, length 1.97, width 2.1, clypeus 0.3. Fovea transverse deep, straight, width 3.15. Cephalic area slightly raised, thoracic striae conspicuous, less than in male, with black setae. Basal segments of chelicerae with 9/10 (left/right) well-developed teeth on furrow promargin and 10/8 (left/right) small teeth on proximal area of furrow, intercheliceral tumescense absent. Labium trapezoidal, length 2.2, width 3.4, with 2 cuspules. Maxillae sub-rectangular, with 71/74 (left/right) cuspules restricted on proximal prolateral angle. Labio-sternal junction narrow in middle. Sternum length 5.3, width 5.6, with 3 pairs of sigilla. Sigilla oval, anterior pair smaller, posterior pair larger, anterior pairs separated from margin by their diameter, posterior pair separated from margin slightly more than their diameter. Tarsal scopula: palp and I–IV densely scopulated; palp and legs I–II entire but with few dispersed longer conical setae; III divided by narrow line of longer conical setae; IV divided by wide medial stripe of longer conical setae. Paired claws: palp and legs I–II without teeth; III and IV with 3 teeth on proximal 1/3 and central axis. Metatarsal scopula extent: I scopulate on distal half; II distal 1/3; III less than distal 1/4; IV not scopulate. Stridulatory setae: as in male, but less dense. Urticating setae: as male. Spermathecae with two digitiform, elongated and granulated seminal receptacles, rounded and wide distally, attached to semicircular, wide membranous base ( Fig. 16 ). Colour (in vivo): as in male, but abdomen with red long setae abundant laterally. Spination (proximal to distal). femur: palp: 0V, 0D, 0-0-1P, 0R; I: 0V, 0D, 0-0-1P, 0R; II: 0V, 0D, 0-0-1P, 0R; III: 0V, 0D, 0-0-1P, 0R; IV: 0V, 0D, 0P, 0-0-1R. Patella: palp: 0V, 0D, 0P, 0R; I: 0V, 0D, 0P, 0R; II: 0V, 0D, 0P, 0R; III: 0V, 0D, 0-1-0P, 0R; IV: 0V, 0D, 0P, 0R. Tibia: palp: 0-2- 3V , 0D, 0-1-0P, 0R; I: 0-1- 2V , 0D, 0P, 0R; II: 0-1- 3V , 0D, 0-2-0P, 0R; III: 0-1- 2V , 0D, 0-0-1P, 0-1-1R; IV: 0-1- 2V , 0D, 0-1-1P, 0-2-1R. Metatarsus: I: 0-3- 4V , 0D, 0P, 0R; II: 0-4- 3V , 0D, 0-1-1P, 0R; III: 0-6- 5V , 0D, 2-2-2P, 0-1-1R; IV: 0- 14 -6V, 0D, 0-1-2P, 0-2-1R. Legs and palpal segments lengths in Table 2 .