williamsi Johnson
Odinia williamsi Johnson, 1924: 90 . Curran 1932: 358 [records]; Curran 1934: 163 [records]; Sabrosky 1959: 232 [review]; Linsley & Usinger 1966: 170 [checklist]; Prado 1975: 1 [catalogue]; Sinclair 2009: 103 [photo]; Gaimari & Mathis 2011: 313 [catalogue].
Distribution. Endemic. Galápagos: Baltra, Floreana, Isabela, Marchena, Pinta, Rábida, Santa Cruz, Santa Fé.
Remarks. Adults of this species were reared from Jasminocereus cactus and found primarily in the arid zone. Odinia williamsi was frequently found swarming around heads of humans and on Santa Fé was observed around the head and eyes of land iguanas.