Table 1.

Locations, geographic coordinates, altitude range, date of sampling, and number of individuals/samples collected from nine study sites

Location	Geographic coordinates	Date of sampling	N	N gen	N lm	N gm
Guanacaste, Costa Rica	10°50’N, 85°37’W	April–May 2016	17	17	17	10
Heredia, Costa Rica	10°00’N, 84°06’W	April–May 2016	29	22	29	10
Arica, Chile	18°31’S, 70°10’W	January 2015–March 2016	34	29	34	28
Tacna, Peru	18°06’S, 70°20’W	March 2016	20	19	20	17
Easter Island, Chile	27°07’S, 109°22’W	August–September 2015	82	82	47	35
Nukualofa, Tonga Island	21°07’S, 175°13’W	September 2016	40	40	30	28
Rarotonga, Cook Islands	21º13’S, 159º46’W	March 2015	29	–	29
Viti Levu, Fiji Islands	17º49’S, 178º0’E	February 2015	18	–	18
South Malé Atoll, Maldives Island	2º32’N, 72º59’E	November 2015	12	11	12	12
Total of samples			281	220	236	140

N total number of samples per site, N gen number of samples used in genetic analysis, N lm number of samples used in linear morphology analysis, N gm number of samples used in geometric morphometry analysis