Male palp with characteristic tegular apophyses. Median apophysis with 2 branches on short shaft. Lateral apophysis horizontal, tip bent upwards. Female palp with robust spines. Tibial apophysis with short shaft and bevelled right-angled terminal part of median apophysis. The other apophysis originates retrolaterally, long and slender in ventral view, small and blunt in lateral view. Embolus slender, borders bulbus belt-like. Epigyne characteristically heart-shaped. Vulva with narrow entrance ducts that are laterally bent and strongly broadened. With broad, large receptacula. Prosoma dark brown to black and contrast-rich bright white or unicoloured brown, with white V- to heart-shaped pattern. Sternum brown, beige or yellow-brown and partly with cream-coloured spots. Chelicerae frontally with one spine on each. Legs I and II brown, legs III and IV slightly darker, partly with cream-coloured spots. Opisthosoma slightly brighter than prosoma (in female grey) with whitish to yellowish margin, 4 white spots that are partly connected by a transverse band. Spinnerets grey.Body length male: 2.4-3 mm
Scattered in xerothermic locations.
The taxonomy around X. cor and X. nubilus still needs a revision (Jantscher 2001a: 92).
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Pesarini C (unpubl.)