Oligoxystre Vellard 1924
Creators: name: Bertani, Rogerio
name: Santos, Thiago
name: Righi, Alexandre
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theraphosidae
Oligoxystre

description: Identification key for <i>Oligoxystre.</i> Modified from Guadanucci (2007). Female of <i>Oligoxystre auratum</i> is undescribed. <b>Males</b> 1 Male palpal bulb embolus with small subapical keel (Guadanucci 2007: Figs 2-5, 26-28).................................................................................................2 – Embolus without keel (Figs 1-3; Guadanucci 2007: Figs 22-23, 31-32, 35- 36).............................................................................................................. 3 2 Embolus long and thin, slightly bent distally (Guadanucci 2007: Figs 26- 28)...................................................................................... <i>O. dominguense</i> – Embolus short, strongly bent medially (Guadanucci 2007: Figs 2-5)........ <i>O. bolivianum</i> 3 Bulb twisted on itself, prolonged by long collar, depressed at base and thin apical end, curved (Vellard 1924: 152, pl. 10 Fig. 38)................ <b> <i>O.</i> auratum</b> – Bulb not as above........................................................................................4 4 Embolus more than 3 times longer than tegulum (Guadanucci 2007: Figs 22-23); spiders with cephalothorax and abdomen dark ventrally; white setae over dorsal region of cephalothorax (Guadanucci 2007: Fig. 38) <i>O. caatinga</i> – Embolus less than 2.5 times tegulum length (Figs 1-3, Guadannuci 2007: Figs 31-23, 35-36); spiders with coloration on ventral portion browish or yellowish; without white setae on body.......................................................5 5 Leg I tibial spur positioned in a perpendicular angle in relation to the tibia axis (Figs 4-5); spiders with carapace, chelicerae, abdomen and legs covered dorsally and ventrally with metallic blue setae (Fig. 7)................................................................................................................ <b> <i>O. diamantinensis</i> sp. n.</b> – Leg I tibial spur with branches positioned in an inclined angle in relation to the tibia axis (Guadanucci 2007: Figs 30, 34); spiders with carapace and legs browish or reddish...................................................................................... 6 6 Embolus slightly bent distally (Guadanucci 2007: Figs 31 32); carapace and legs brown............................................................................ <i>O. tucuruiense</i> – Embolus slightly curved distally (Guadanucci 2007: Figs 35-36); carapace and basal portion of legs reddish and distal portions of legs dark (Guadanucci 2007: Fig. 39)........................................................................... <i>O. rufoniger</i> <b>Females</b> 1 Spermatheca receptacula as long as wide (Guadanucci 2007: Fig. 6).......................................................................................................... <i>O. bolivianum</i> – Spermatheca receptacula longer than wide (Figs 6; Guadanucci 2007: Figs 24, 29, 33, 37)............................................................................................ 2 2 Spermatheca receptacula without lateral lobes (Figs 6; Guadanucci 2007: Figs 24, 29)........................................................................................................3 – Spermathecae receptacula with at least one lateral lobe (Guadanucci 2007: Figs 29, 33, 37)...........................................................................................4 3 Spermatheca receptacula long, with small apical lobes of roughtly the same size (Guadanucci 2007: Fig. 24); white setae over dorsal region of cephalothorax, ventral cephalothorax and abdomen very dark................ <i>O. caatinga</i> – Spermatheca receptacula with a large lobe surrounded by other smaller lobes (Fig. 6); spiders with carapace, chelicerae, abdomen and legs covered dorsally and ventrally with metallic blue setae (Fig. 8)....... <b> <i>O. diamantinensis</i> sp. n.</b> 4 Spermatheca receptacula very long and thin, with small lobes over entire length (Guadanucci 2007: Fig. 29)..................................... <i>O. dominguense</i> – Spermatheca receptacula long, with wide base, bearing lateral lobe towards outside (Guadanucci 2007: Figs 33, 37)..................................................... 5 5 Lateral lobe bifurcated (or partly bifurcated) (Guadanucci 2007: Fig. 33); carapace and legs brown........................................................ <i>O. tucuruiense</i> – Lateral lobe not bifurcated (Guadanucci 2007: Fig. 37); carapace and basal region of legs reddish, apical region of legs dark........................ <i>O. rufoniger</i>
description: Published as part of <i>Bertani, Rogerio, Santos, Thiago &amp; Righi, Alexandre, 2009, A new species of Oligoxystre Vellard 1924 (Araneae, Theraphosidae) from Brazil, pp. 41-51 in ZooKeys 5 (5)</i> on pages 43-44, DOI: 10.3897/zookeys.5.83, http://zenodo.org/record/576429
description: {"references": ["Guadanucci JPL (2007) A revision of the Neotropical spider genus Oligoxystre Vellard 1924 (Theraphosidae, Ischnocolinae). Zootaxa 1555: 1 - 20. http: // www. mapress. com / zootaxa / 2007 f / z 01555 p 020 f. pdf", "Vellard J (1924) Etudes de zoologie. Archivos do Instituto Vital Brazil 2: 121 - 170, 8 pls."]}