§ Deltochilum (Hybomidium) pseudoicarus Balthasar, 1939

Deltochilum (Tetraodontides) pseudoicarus Balthasar 1939g: 11 (San Bernardino [= Paraguay?] - LECTO- TYPE)

Distribution. Brazil (NA): Balthasar 1939g: 11 (as Deltochilum (Tetraodontides) pseudoicarus); Blackwelder 1944: 203; Vulcano and Pereira 1964: 650; Vaz-de-Mello 2000: 192; Ratcliffe 2013b: 493 (NA); González-Alvarado and Vaz-de-Mello 2014: 458. “Amazon Basin”: Balthasar 1939g: 11 (as Deltochilum (Tetraodontides) pseudoicarus); Génier 2001: 4. Other: Balthasar 1939g: 11 (Bolivia, Paraguay - as Deltochilum (Tetraodontides) pseudoicarus); Vulcano and Pereira 1964: 650 (Argentina, Bolivia, Paraguay); Génier 2001: 4 (San Bernardino [= Paraguay?] - designation LECTOTYPE Deltochilum (Tetraodontides) pseudoicarus); González-Alvarado and Vaz-de-Mello 2014: 458 (Argentina, Bolivia, Paraguay).

Note. Reexamination of the specimens of Deltochilum pseudoicarus mentioned in Ratcliffe (2013b: 493), with the aid of the key provided in González-Alvarado and Vaz-de-Mello (2014: 467), has revealed they are in fact D. icarus (B. Ratcliffe, pers. comm.). The distribution of D. icarus appears to be limited to the research area, while D. pseudoicarus is a species restricted to southern and eastern Brazil, northern Argentina, Bolivia and Paraguay.