Assertion: widow spider | /r/CapableOf | exhibit red or orange hourglass
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Female widow spiders are typically dark brown or a shiny black in colour when they are full grown, usually exhibiting a red or orange hourglass on the ventral surface (underside) of the abdomen; some may have a pair of red spots or have no marking at all.