Lasioseius oblongus (Ewing, 1909)
Gamasus oblongus Ewing, 1909: 67 .
Lasioseius oblongus .— Hennessey & Farrier, 1988: 28; Farrier & Hennessey, 1993: 37. Lasioseius (Cuspiacus) oblongus .— Christian & Karg, 2006: 213.
TYPE DEPOSITORY: Illinois Natural History Survey Insect Collection, (cited as Illinois State Laboratory of Natural History), Champaign, Illinois, USA.
TYPE LOCALITY AND HABITAT: Marion, Illinois, USA, in moss.