callona Steyskal
Euxestsa callona Steyskal, 1966: 487 . Steyskal 1968: 17 [catalogue]; Linsley 1977: 40 [checklist]; Arnaud 1979: 325 [type catalogue].
Euxesta nitidiventris of authors (misidentification): Coquillett 1901a: 376 [records]; Curran 1932: 354 [records]; Curran 1934: 156 [records].
Distribution. Endemic. Galápagos: Isabela (ICCDRS), Marchena (ICCDRS), Santa Cruz.
Remarks. This species (Fig. 18) is most common in transition and humid zones.