Ami obscura ( Ausserer 1875 ) Ausserer, 1875

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 : 65

Ami obscura ( Ausserer 1875) new combination

Ischnocolus obscurus Ausserer 1875: 171 . Eurypelma obscurum: Roewer 1942: 240 . Avicularia obscura: Platnick 2007 .

Type: Lectotype male from Bogotá, Colombia, (Keyserling collection, BMNH 1890–7–1 –340), examined. Ausserer (1875) described a male and female but did not designate a holotype; the female has not been located.

Diagnosis: Male differs from those of other species by the reduced retrolateral keels on the palpal organ ( Figs 19–20 ). Related with A. bladesi and the clade A. yupanqui +, in an unresolved polytomy (see Cladistics).

Remarks: This species shares the characters considered generic apomorphies; two retrolateral processes on male palpal tibia ( Fig. 1 ), modified Type I urticating hairs, and the morphology of male palpal organ with two prolateral keels. For these reasons it is included in the genus Ami . One of us (R.B.) found a female in the collection of BMNH (1890.278) labelled: “called Ischnocolus obscurus by Ausserer, 1875 ”. It was an adult (with developed ovules) but unfortunately lacking spermathecae.

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 1 – 16. Ami species. 1 – 4. Left palpal tibiae, males, dorsal view, showing two retrolateral processes. 1. Ami obscura; 2. Ami bladesi; 3. Ami yupanqui; 4. Ami caxiuana. 5 – 6. Ami caxiuana, dorsal view. 5. Male; 6. Female. 7 – 8. Left palpal organ, A. caxiuana, male. 7. Prolateral view, showing keels and granular area; 8. Retrolateral view. 9. A. caxiuana, spermathecae, ventral view. 10. A. caxiuana, left tibial apophyses, male, proventral view. 11 – 13. A. yupanquii, male, left palpal organ. 11. Prolateral view showing ventral flattened area (on left); 12. Retrolateral view; 13. Dorsal view. 14. A. yupanquii, male, left tibial apophyses, proventral view. 15. A. yupanquii, spermathecae, ventral view. 16. A. bladesi, male, left tibial apophyses, proventral view.