Figure 2.

Neighbour-joining (NJ) analysis (combined COI and cytB data) with 1000 bootstrap replicates in PAUP*. Eight of the nine Swezeyana species are included and 16 other taxa from Triozidae, mostly representing other Hawaiian genera for comparison of divergence; and one species from Carsidaridae as an outgroup (Mesohomotoma hibisci) (Table 1). Outlines of parameres and female terminalia illustrate the two recognized species groups (elongagena group in black, reticulata group in grey, S. magnaccai unplaced), and fore wing images (Fig. 1) show the distribution of patterned/pigmented wings. Regional localities of sample are given, and “imm.” indicates an immature sampled for S. reticulata. NJ bootstrap support values ≥ 60% are indicated for all nodes, and comparative node support from ML and Bayesian analyses are shown for the three same island sister taxa pairs (NJ/ML[bold]/Bayesian[italic]) (see Discussion). Maximum genetic divergence (uncorrected p-distances) is shown for Swezeyana and four other endemic Hawaiian genera; also shown are maximum intraspecific distances (indicated with an asterix) for two widespread non-Hawaiian species with multiple individuals sampled across terrestrial (T. urticae) or oceanic (M. hibisci) landscapes (see Discussion).