Bivoltine flight phenologies of L. laevissimum, L. hitchensi and L. ellisiae, inferred from pan trap collections, 2003–2013. The number of bees collected per week represents the average number of bees collected in pan traps, across sites and years, from 2003 to 2013. A total of 52 L. laevissimum bees, 1480 L. hitchensi bees, and 67 L. ellisiae bees were collected. Dark grey bars represent males, white bars represent spring females and light grey bars represent summer females. The red polynomial regression (drawn using the geom_smooth function, Loess method, in R) was used to help visually identify the number of abundance peaks for each species. Black arrows indicate the weeks when L. hitchensi males were collected in pan traps.