Ami amazonica Jimenez & Bertani

Pérez-Miles, Fernando, Gabriel, Ray, Miglio, Laura, Bonaldo, Alexandre, Gallon, Richard, Jimenez, Juan Jacobo & Bertani, Rogerio, 2008, Ami, a new Theraphosid genus from Central and South America, with the description of six new species (Araneae: Mygalomorphae), Zootaxa 1915, pp. 54-68 : 63-64

Ami amazonica Jimenez & Bertani , sp. nov.

( Figs 30–31 , 42 ; Table 8 )

Type: Holotype female ( ICN –Ar–1149), Leticia [4º10’11”S, 69º56’49”W, alt. 100m] Amazonas, Colombia, 4 Nov 2005, E. Florez; deposited in ICN –Ar.

Etymology: The specific epithet is a noun in apposition from the Colombian amazonic region.

Diagnosis: Females differ from those of all species by the spermathecae having two back-plates with slender receptacles ( Fig. 31 ). Male unknown. Uncertain position with respect to other species of Ami due to several missing entries (see Cladistics).

Description: Female (holotype): Total length, excluding chelicerae and spinnerets, 17.8. Carapace length 8.4, width 7.2. Anterior eye row slightly procurved, posterior slightly recurved. Eyes sizes and interspaces: AME 0.34, ALE 0.42, PME 0.27, PLE 0.34, AME–AME 0.15, AME–ALE 0.05, PME–PME 0.68, PME–PLE 0.02, ALE–PLE 0.19, OQ length 0.6, width 1.2, clypeus 0.3. Fovea width 0.9. Labium length 0.6, width 1.0 with 13 cuspules, maxillae with ca. 37 cuspules on inner third. Sternum length 2.8. Chelicerae with 11 teeth on promargin and 14 small teeth on proximal retromargin. Tarsi I–IV densely scopulate: entire on I, II; III, divided in apical half; IV, divided by strip of longer, thicker setae. Metatarsi I and II scopulate on distal ¾ of surface; III, apically scopulate; IV, ascopulate. Legs ( Table 8 ). Spination: femora I–IV and palp, 0. Tibiae I–IV and palp, I 2V; II 1 P; III 3V, 1P; IV 3V, 1P; palp 2V, 1P. Metatarsi: I 2V; II 3V, 1P; III 6V, 2P, 3R; IV 8V, 4P, 3R, 2D. Tarsi I–IV and palp, 0. Color: cephalothorax light reddish-brown, legs and abdomen brown. Spermathecae having two back-plates with slender receptacles, wider proximally, globose distally ( Fig. 31 ).

Natural History:– Specimen captured in Leticia, Amazonas, collected by hand on November 4, 2005, near the base of the IMANI Institute, and in a small area of highly disturbed tropical forest at an altitude 100m.

Figures

FIGURES 17 – 38. Ami species. 17 – 18. A. bladesi, male, left palpal organ,. 17. Prolateral view; 18. Retrolateral view. 19 – 20. A. obscura, male, right palpal organ. 19. Retrolateral view, 20. Prolateral view. 21. A. obscura, male, right tibial apophyses, proventral view. 22 - 23. Ami pijaos, male, left palpal tibiae, showing retrolateral process. 22. Dorsal view; 23. Ventral view. 24 – 27. A. pijaos, male, left palpal organ. 24. Prolateral view. 25. Retrolateral view; 26. Prodorsal view. 27. Retrodorsal view. 28. A. pijaos, male, left tibial apophyses, proventral view. 29. A. pijaos, spermathecae, ventral view. 30. Ami amazonica, female, dorsal view. 31. A. amazonica, spermathecae, ventral view. 32. A. weinmanni, male, left palpal tibia, dorsal view, showing two retrolateral processes. 33. A. weinmanni, male, left tibial apophyses, proventral view. 34 – 35. A. weinmanni, male, left palpal organ. 34. Prolateral view; 35. Retrolateral view. 36. A. weinmanni, spermathecae, ventral view. 37 – 38. Ami weinmanni, dorsal view. 37. Male; 38. Female.

FIGURES 39 - 45. Ami species. 39. A. yupanquii, female, habitus. 40. A. bladesi, male, habitus. 41. A. pijaos, male, habitus. 42. A. amazonica, female, habitus. 43 – 44. Ami weinmanni, female tarsus II, ventral view. 43. Tarsal scopula with distal rhomboidal group of longer setae. 44. Close-up of distal tarsal scopula showing group of longer setae. 45. A. weinmanni, male, modified Type I abdominal urticating hairs, with area b longer than usual.