Byrasba Harold, 1869, revalidated

Barybas Burmeister, 1855: 20 (non Blanchard 1850).

Byrasba Harold, 1869: 122 (replacement name for Barybas Burmeister).

Byrasba – Katovich 2008: 6 (synonymy with Rhinaspis Perty, 1833).

Type species

Barybas volvulus Burmeister, 1855 (designation: monotypy).

Diagnosis

Pronotal anterior and posterior margins not beaded (Fig. 2 B), posterior margin prominent with a medial tooth (Fig. 2 B); prosternum anteriorly concave (similar to Fig. 12 K); protibia with three external teeth and without spur (Fig. 2 B); male protarsomere I with an internomedial tooth and II–VI with external projection (Fig. 2 B); elytron with five longitudinal grooves between internal margin and humerus, lateral margins beaded, posterior and posterointernal margins not beaded; metatarsomere V without internoproximal spine-like setae; abdomen with intersegmental membrane VII–VIII concealed.

Remarks

See Agaocnemis . The present study revalidates Byrasba, formerly a synonym of Rhinaspis, based on the following characters (opposition to Rhinaspis): pronotal lateral margins straight (Fig. 2 B) (crenulate, Fig. 10 D–F); posterior margin prominent with a medial tooth (Fig. 2 B) (posterior margin not prominent and unarmed, Fig. 10 D–F); protibial spur absent (present); protarsomeres II–IV with externodistal projection (without projection); elytron with five weakly prominent lines between internal margin and humerus (with three lines).