Ami yupanquii Pérez-Miles, Gabriel & Gallon, 2008

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 : 58-59

Ami yupanquii Pérez-Miles, Gabriel & Gallon , sp. nov.

( Figs 3, 11–15 , 39 ; Table 3–4 )

Types: Holotype male and paratype female, near Puyo (1º 30’ S, 77º58’W), Ecuador 2001 (P. Stevens), deposited in HMO.

Etymology: The specific epithet is a patronym in honor of the Inca leader, Tupac Yupanqui , who unified the agricultural populations of Ecuador.

Diagnosis: The male differs from that of A. caxiuana by the palpal organ being ventrally flattened, and in the orientation of the embolus ( Figs 11–13 ); from A. bladesi by the longer apical portion of the palpal organ and the prolateral inferior keel of the palpal organ with a finely serrated edge; and from A. pijaos by having only two prolateral keels on the palpal organ. The more developed prolateral keels on the palpal organ distinguish it from A. obscura . The female differs from those of A. caxiuana , A. pijaos , and A. amazonica by the conical form of the ventral receptacles and the absence of a notch or division in the semicircular back-plate of the spermathecae ( Fig. 15 ). This species is the sister group of A. pijaos + A. weinmanni (see Cladistics).

Description: Male (holotype): Total length, excluding chelicerae and spinnerets, 21.0. Carapace length 9.4, width 8.2. Anterior eye row slightly procurved, posterior slightly recurved. Eyes sizes and interspaces: AME 0.36, ALE 0.46, PME 0.36, PLE 0.40, AME–AME 0.18, AME–ALE 0.12, PME–PME 0.70, PME–PLE 0.10, ALE–PLE 0.17, OQ length 0.86, width 1.68, clypeus 0.32. Fovea transverse, width 1.1. Labium length 0.9, width 1.6 with 20 cuspules, maxillae with ca. 43 cuspules on inner third. Sternum length 3.7. Chelicerae with 9 teeth on promargin and 12 small teeth proximally. Tarsi I–IV densely scopulated, on tarsi I–II entire, III divided in apical half and IV divided by strip of longer, thicker setae. Metatarsi I, II scopulate on distal 2/3, III apically scopulate, IV ascopulate. Palpal tibia with two distal conical processes on retrolateral surface ( Fig. 3 ). Tibia I with paired distal proventral apophyses with spine retrolaterally ( Fig. 14 ). Flexion of metatarsus retrolateral with respect to tibial apophyses. Palpal organ piriform ( Figs 11–13 ). Leg lengths ( Table 3 ). Spination: femora I–IV and palp 0. Patellae I–IV and palp 0. Tibiae I 1 R; II 3V; III 3V, 1P; IV 3V, 1D; palp 0. Metatarsi I 1V; II 4V; III 7V, 2P, 2D; IV 10V, 1R, 2P, 1D. Tarsi I–IV and palp 0. Color: cephalothorax, abdomen, femora and patellae light reddish-brown, chelicerae, tibiae, metatarsi and tarsi dark brown.

Female (paratype): Total length, excluding chelicerae and spinnerets, 18.3. Carapace length 7.7, width 7.5. Anterior eye row straight to slightly procurved, posterior row slightly recurved. Eye sizes and interspaces: AME 0.24, ALE 0.46, PME 0.34, PLE 0.36, AME–AME 0.28, AME–ALE 0.12, PME–PME 0.72, PME–PLE 0.04, ALE–PLE 0.12, OQ length 0.7 width 1.3, clypeus 0.2. Fovea procurved, width 0.6. Labium length 0.7, width 1.2, with 18 cuspules, maxillae with about 43 cuspules on inner third. Sternum length 3.7. Chelicerae with 9 teeth on promargin and 12 small teeth on proximal retromargin. Tarsi densely scopulate: I, II entire; III apically divided strip of longer, thicker setae; IV divided. Metatarsi I, II scopulate for distal half, III apically scopulate, IV ascopulate. Spination: femora and patellae I–IV and palp, 0. Tibiae: I 1 v; II 1 v; III 1 p, 1r, 4v; IV 1 p, 1r, 2v; palp 3v. Metatarsi I 2 v; II 2 v; III 4 d, 1p, 7v; IV 2 p, 2r, 9v. Tarsi I–IV and palp 0. Color as in male. Modified Type I urticating hairs with area b longer than usual. Spermathecae with paired conical ventral receptacles attached to almost discrete, semicircular, sclerotized back-plate ( Fig. 15 ).

Figures

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.

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.

Tables

TABLE 3. Length of leg and palpal segments of male A. yupanquii.

	I	II	III	IV	Palp
Fe	9.4	8.9	8.1	9.5	7.0
Pa	4.7	4.2	3.4	3.3	3.2
Ti	7.5	6.4	5.5	7.5	5.0
Mt	5.6	6.2	7.1	9.9	–
Ta	5.3	4.8	4.1	4.8	1.8
Total	32.5	30.5	28.2	35.0	17.0