I. trisetosus Denis, 1923

– Isotomodes productus Axels. var. trisetosus Denis, 1923: 243

QC Marshall 1964, 1967; Skidmore 1995

Remarks: Christiansen & Bellinger (1980, 1998) did not mention this species among North American congeners.

General distribution: obscure due to confusion with numerous similar forms.