ABSTRACT
Pronotum much broader than the head; posteriorly broadly lobed; crenulate on posterior margin; with prominent ridge margining disc continuously from posterior angle to posterior angle, ridge evenly arcuate or faintly bisinuate to front; disc with a shallow, broad depression inside marginal ridge; hypomeron broad, excavate to receive prolegs. Prosternum broad, vertical anteriorly on either side of antennal cavity to receive head; intercoxal area deeply depressed to receive antennae, intercoxal process long, extending deep into mesosternal groove, with ventrally projecting digitiform antero-medial process that rests between apices of pedicles and bases of third antennomeres in retracted position; procoxal cavities open behind. Scutellum small, triangular, crenulate anteriorly. Mesosternum broad but short, deeply excavate
medially to receive prosternal process and antennae; mesocoxal cavities open laterally. Metasternum broad, long and somewhat bulging, postcoxal lines vague to distinct.
