Key to the Subgenera of Plesioglymmius

Ross T. Bell


1.      Head with prominent suborbital tubercle behind each eye (in 
        ventral view these appear as prominent lateral angles on 
        shelf extending across base of mentum); eye extended far 
        behind middle of temporal lobe. .............................2

1'.     Head without suborbital tubercles; eye anterior to middle of 
        temporal lobe. ..................................Ameroglymmius


2(1).   Antennal sclerites either contiguous in midline or else 
        separated by less than half the width of the median lobe; 
        base of elytral interval I not forming a tooth. 
        .................................................Juxtaglymmius


2'.     Antennal sclerites separated by at least the width of the 
        median lobe; base of elytral interval I forming anteriorly 
        directed tooth. ........................Plesioglymmius s. str.