Summary of Perkins Canyon pitfall trap catch counts for P. californicus and P. vicinus with presence or absence of mating marks pooled for males and females indicated by bar colour for each sampling period. Green shaded periods are the typical core precipitation periods in California. Triangles indicate the month with the first measurable rainfall. Stars mark the first month each year with > 63 mm (~ 2.5 inches) of cumulative rainfall. As samples were taken at or near the new moon, 2016 has 13 sampling periods and 2017–2018 having only 12.