Phylogenetic position of a remarkable new fideliine bee from northern Chile (Hymenoptera: Megachilidae)

Fideliine bees are an archaic group with a disjunct distribution mostly restricted to deserts of S outh A merica and S outh A frica. This group was previously thought to be more diverse in A frica than in S outh A merica, where only one genus ( N eofidelia ) comprising five species is known. Here we describe a species belonging to a second S outh A merican genus: X enofidelia colorada P acker gen. et sp.n. , from northern C hile. The species is...