Uaiuara dianae , Rheims, Cristina A., 2013

Rheims, Cristina A., 2013, A new genus of huntsman spiders (Araneae, Sparassidae, Sparianthinae) from the Neotropical region, Zootaxa 3734 (2), pp. 199-220: 211-212

publication ID

http://dx.doi.org/10.11646/zootaxa.3734.2.6

publication LSID

lsid:zoobank.org:pub:3BC10987-3883-44BD-9274-22D961B6336C

persistent identifier

http://treatment.plazi.org/id/03C72C23-FF85-FFD7-FF22-FBF9FD361046

treatment provided by

Plazi

scientific name

Uaiuara dianae
status

sp. nov.

Uaiuara dianae  sp. nov.

Figs 5 –6View FIGURES 5 – 8, 37–40View FIGURES 37 – 40, 57View FIGURE 57

Type material. Holotype: ♂ from Cocha Shinguito (05°08’S, 74 ° 45 ’W), Rio Samíria, Loreto, Peru, 12 May 1990, D. Silva leg (MUSM 505865). Paratypes: 2 ♀, Pithecia (11 °05’S, 72 ° 42 ’W), Loreto, Peru, 13–30 May 1990, T. Erwin & D. Silva leg. (MUSM 505867).

Etymology. The specific name honors the Peruvian friend and arachnologist Dr. Diana Silva, curator of the collection of the Museo de Historia Natural de la Universidad Mayor de San Marcos in Lima and collector of the type specimens. Noun in genitive.

Diagnosis. Males of U. dianae  sp. nov. resemble those of U. amazonica (Simon)  comb. nov. in the lack of setae along the retrolateral groove of the palp ( Figs 30View FIGURES 29 – 32, 38View FIGURES 37 – 40) but are distinguished by the vRTA, with long and spinelike projection, resembling a tree branch and by the embolus widened and laminar at tip ( Fig. 37View FIGURES 37 – 40). The females resemble those of U. amazonica (Simon)  comb. nov. in the epigyne with large projections of the lateral lobes, reaching the posterior margin of the median septum ( Figs 31View FIGURES 29 – 32, 40View FIGURES 37 – 40). They are distinguished from the latter species by the median septum strongly indented anteriorly ( Fig. 39View FIGURES 37 – 40) and by the Lp very wide and curved towards each other ( Fig. 40View FIGURES 37 – 40).

Description. Male (MUSM 505865, holotype): Prosoma brownish orange with brown margins, brown along the margins of cephalic region and fovea and brown U-shaped mark extending from cephalic region to posterior margin of prosoma. Eye borders black. Chelicerae brownish orange with pair of longitudinal brown stripes. Legs and pedipalps brownish orange with faint brown incomplete bands ( Fig. 5View FIGURES 5 – 8) Sternum pale yellow with pale orange margins. Endites pale yellow. Labium pale orange, distally lighter. Opisthosoma grayish brown with indistinct gray dorsal pattern ( Fig. 5View FIGURES 5 – 8). Total length 6.5. Prosoma: 3.0 long, 2.7 wide. Opisthosoma: 3.3 long, 1.9 wide. Eyes: diameters: 0.22, 0.16, 0.14, 0.16; interdistances: 0.14, 0.04, 0.22, 0.18, 0.12, 0.04. Legs: I: 10.7 (3.0, 1.3, 3.1, 2.5, 0.8); II: 10.9 (3.2, 1.3, 3.0, 2.6, 0.8); III: 8.7 (2.6, 1.1, 2.1, 2.2, 0.7); IV: 10.6 (3.0, 1.1, 2.6, 2.9, 1.0). Spination: tibiae I –II: v 9 pairs. Palp: tibia with one prolateral spine; vRTA enlarged at base and with long, spine-like projection resembling a tree branch; dRTA longer than vRTA and distally twisted; VTA retrolaterally displaced; cymbium with retrolateral groove extending throughout little over half the cymbium length; subtegulum/tegulum notch at 4 o’clock; tegulum flanked prolaterally by hyaline membrane, strongly protruding at the base of embolus and becoming slightly membranous at the base of conductor.

Female (MUSM 505867, paratype): Coloration as in male, with slightly lighter markings on prosoma and opisthosoma ( Fig. 6View FIGURES 5 – 8). Total length 8.5. Prosoma: 3.0 long, 2.8 wide. Opisthosoma: 5.0 long, 3.1 wide. Eyes: diameters: 0.22, 0.18, 0.14, 0.16; interdistances: 0.18, 0.08, 0.22, 0.20, 0.14, 0.06. Legs: I: 10.7 (3.0, 1.5, 3.1, 2.4, 0.7); II: 11.0 (3.3, 1.5, 3.1, 2.4, 0.7); III: 9.0 (2.7, 1.3, 2.1, 2.2, 0.7); IV: 10.2 (3.0, 1.2, 2.5, 2.6, 0.9). Spination: tibiae I –II: v 9 pairs; tibia III: d0. Epigyne: epigynal field slightly wider than long; median septum three times wider than long, indented anteriorly ( Fig. 39View FIGURES 37 – 40). Vulva: gp small and rounded arising close to Lp; fertilization ducts long, diverging posteriorly with tips pointing towards each other ( Fig. 40View FIGURES 37 – 40).

Variation. Two females (n = 2): total length 6.6–8.5; prosoma length 3.0– 3.1.

Distribution. Central western Peru ( Fig. 57View FIGURE 57).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Uaiuara