Distribution and Habitat
The first British record of this species was from Central Park, Plymouth in 1995. It has subsequently been recorded from other sites in and around Plymouth and in the Dartmouth area of south Devon. Although it was originally discovered in urban locations, P. barberii has also been collected from leaf litter in deciduous woodland and from a cave. However, there are insufficient habitat data available for reliable conclusions to be drawn from any further analysis. In continental Europe it is found along the French and Italian Rivieras (Kime, 2001) and was presumably introduced to south Devon via the port or marina facilities in Dartmouth and Plymouth (Bolton, 1996). The species appears to be winter active with adults having been found in December, February and April. Immature stadia have been collected in November and December.