Ancylometes jau, Höfer, H. & Brescovit, A. D., 2000

Höfer, H. & Brescovit, A. D., 2000, A revision of the Neotropical spider genus Ancylometes Bertkau (Araneae: Pisauridae), Insect Systematics & Evolution 31, pp. 323-360 : 349-359

Ancylometes jau sp. n.

(Fig. 49-51, 63)

Type material. - Male holotype and female paratype from Parenini, Jau National Park, Amazonas, Brazil, June 1995, M.E. do E.S. Oliveira col., deposited in IBSP 6530.

Etymology. - The specific name refers to the region where the only specimens of the species were collected.

Diagnosis. - Male with large oval-shaped membranous lobe in palp, covering base of embolus and short median apophysis ending in a hook (Fig. 49). Retrolateral tibial apophysis very large and sharp (Fig. 49). Female epigyne with anteriorly very broad median plate narrowing rapidly towards pointed posterior edge (Fig. 50). Narrow central projection on median plate. Due to lateral extension of the median plate copulatory ducts open on lateral sides (Fig. 51).

Description. - Male (holotype). Coloration as typical for genus, except for two black semicircular spots anteriorly and a median anterior subrectangular yellowish spot on dorsum of abdomen. Chelicerae with 2 promarginal and 4 retromarginal teeth. Retrolateral tibial apophysis of palp large and sharp. Cymbium broad. Membranous lobe large, covering whole base of embolus. Conductor typically wing-shaped, median apophysis short, strongly hooked (Fig. 49).

Measurements. Total length 13.60. Prosoma 7.00 long, 5.50 wide. Clypeus 0.30 high. Eye diameters and interdistances: AME 0.33, ALE 0.26, PME 0.35, PLE 0.28; AME-AME 0.16, AME-ALE0.18, PME-PME 0.11, PME-PLE 0.37, ALE-PLE 0.15, AME-PME 0.25, MOQ length 0.78, front width 0.75, back width 0.80. Cymbium 2.9 long, 1.7 wide, median apophysis 0.7 long.

Legs. I-femur 6.5/ patella 3.0/ tibia 6.3/ metatarsus6.1/ tarsus 2.8/ total 24.7; II- 6.0/ 3.0/ 5.5/ 5.5 /2.6 /22.6; III- 5.3/ 2.5/ 5.0/ 5.5/ 2.2/ 20.5; IV-6.6/ 2.8/ 6.3/ 7.8/ 2.7/ 26.2. Leg spination: femoral p1-2, d1-1-1, r1-1-1-1; II p1-1-1-1, d1-1, r1-1-1; III p1-1-1-1, d1-1-1, r1-1-1-1; IV p1-1-1, d1-1-1, r1-1-1; tibiae I-II v2 -2-2-2, p1-1, r1-1-1; III-IV v2 -2-2, p1-1, r1-1; metatarsi I-II v2 -2-2, p1-1-1, r1-1-1; III-IV v2 -2-2, p1-1-1, r1-1-1; tarsi III v1; IV v1-2.

Female (paratype). Coloration basically as in male. Median plate of epigyne very broad in its anterior part, overlapping totally the lateral plates, narrowing rapidly to pointed posterior edge, bearing narrow projection. Spermathecae appearing by transparency of median plate (Fig. 50). Copulatory ducts open laterally and reach spermathecae from ventral by describing a strong curve (Fig. 51). Chelicerae with 2 promarginal and 4 retromarginal teeth.

Measurements. Total length 13.0. Prosoma 6.4 long, 5.2 wide. Clypeus 0.3 high. Eye diameters and interdistances: AME 0.30, ALE 0.17, PME 0.35, PLE 0.32; AME-AME 0.16, AME-ALE 0.22, PME-PME 0.12, PME-PLE 0.32, ALE-PLE 0.13, AME-PME 0.21, MOQ length 0.84, front width 0.70, back width 0.83.

Legs. I-femur 5.0/ patella 2.8/ tibia 4.4/ metatarsus4.2/ tarsus 2.0/ total 18.4; II-4.8/ 2.5/ 4.1/ 4.1/ 2.2/ 17.7; III-4.6/ 2.2/ 3.8/ 4.5/ 2.0/ 17.1; IV- 6.0/ 2.6/ 5.3/ 6.8/ 2.7/ 23.4. Leg spination: femora I p1-2, d1-1-1, r1-1-1-1; II p1-1-1-1, d1-1, r1-1-1; III p1-1-1-1, d1-1-1, r1-1-1-1; IV p1-1-1, d1-1-1, r1-1-1; tibiae I-II v2 -2-2-2, p1-1, r1-1-1; III-IV v2 -2-2, p1-1, r1-1; metatarsi I-II v2 -2-2, p1-1-1, r1-1-1; III-IV v2 -2-2, p1-1-1, r1-1-1; tarsi III v1; IV v1 -1. Epigyne: 2.3 long, 2.7 wide.

Note. The abdomen of the female is destroyed and left legs II and III are loose.

Other material examined. - Two immatures from the same locality of the types (IBSP 6530).

Distribution. - Known only from the type locality in central Amazonia, Brazil (Fig. 63).