Ancylometes amazonicus (♂,♀) Simon, 1898

Peru (Huanuco) and Western to Central Brazil

(specimen deposited at IBSP 12111).
Coloration as typical for the genus, except lateral sides of abdomen with irregular white bands.
Cymbium of male palp clearly larger than wide, with dorsal retrolateral projection and dorsal furrow. Membraneous lobe originating at base of embolus as in other species, however not accompanying its course, but longitudinally directed to base of narrow, hammer-like median apophysis, which originates in the very center of the bulb and is oblique. Embolus itself narrow from its origin, describing 3/4 of a circle. Conductor long and curved.
Chelicerae with 3 promarginal and 4 retromarginal teeth.
Measurements: Total length 13.5. Prosoma 7.5 long, 5.9 wide, Clypeus 0.38.
Eye diameters and interdistances: AME 0.36, ALE 0.28, PME 0.42, PLE 0.24; AME-AME 0.16, AME-ALE 0.20, PME-PME 0.14, PME-PLE 0.26, ALE-PLE 0.14, AME-PME 0.14, MOQ length 0.88, front width 0.86, back width 0.92.
Legs: I-femur 7.6/ patella 3.8/ tibia 7.4/ metatarsus 8.0/ tarsus 3.6/ total 30.4; II- 7.1/ 3.5/ 6.9/ 7.6/ 3.2/ 28.3; III- 6.9/ 3.2/ 6.2/ 7.5/ 3.1/ 26.9; IV- 8.4/ 3.5/ 8.2/ 11.5/ 4.6/ 36.2. Cymbium 3.3 long, 1.5 wide, median apophysis 0.8 long.
Leg spination: femora I p2, r1-1-1, d1-1-1; II p1-1-1, r1-1-1, d1-1-1; III p1-1-1, r1-1-1-1, d1-1-1; IV p1-1-1, r1-2, d1-1-1; tibiae I-II v2-2-2-2, p1-1-1, r1-1-(1); III-IV v2-2-2, p1-1, r1-1; metatarsi I-II v2-2-1, p1-1-2, r1-1-2; III-IV v2-2-2, p1-1-1, r1-1; tarsi III 0; IV v1, p1, r1.

(specimen deposited at IBSP 12111).
Typical general coloration of genus, lateral sides of abdomen with inconspicious white spots.
Median plate of epigyne almost as wide as long, becoming wider posteriorly. Lateral plates almost completely covered by median plate which presents a little knob posteriorly. Medianly bulged copulatory ducts enter the wide apart spermathecae interiorly by a strong curve.
Chelicerae with 3 promarginal and 3 retromarginal teeth.
Measurements. Total length 15.3. Prosoma 7.5 long, 5.7 wide, Clypeus 0.32.
Eye diameters and interdistances: AME 0.38, ALE 0.26, PME 0.4, PLE 0.42; AME-AME 0.2, AME-ALE 0.32, PME-PME 0.2, PME-PLE 0.4, ALE-PLE 0.22, AME-PME 0.14, MOQ length 1.0, front width 0.92, back width 1.06.
Epigyne 2.8 long, 2.6 wide.
Legs. I-femur 6.6/ patella 3.3/ tibia 6.0/ metatarsus 5.3/ tarsus 2.2/ total 23.4; II- 6.1/ 3.0/ 5.3/ 5.1/ 2.3/ 21.8; III- 6.0/ 2.8/ 4.9/ 5.7/ 2.3/ 21.7: IV- 7.4/ 3.1/ 6.8/ 9.4/ 3.5/ 30.2.
Leg spination: femora I p2, r1-1, d1-1-1; II p1-1-1, r1-1; III p1-1-1, r1-1-1-1, d1-1-1; IV p1-1-1, d1-1-1, r1-2; tibiae I v2-2-2-2, p1; II v2-2-2-2, p1-1; III v2-2, p1-1, r1-1; IV v2-2, p1-1, r1-1; metatarsi I v2-2-1; II v2-2-1, p1-1, r1; III v2-2, p1-1-1, r1-1; IV v2-2, p1-1-1, r1-1-1; tarsi III v1; IV v1, p1, r1.

A smaller species of the genus, originally described by Simon from a male, collected in central Amazonia, near São Paulo de Olivença at the Rio Negro.