part of labiogula submentum Abbr: Smt in ISBN:0-937548-00-6. In many insects, the part of the postmentum behind the submentomental suture. In mosquito larvae, delimited basally only by an imaginary line between the front edges of the posterior tentorial pits and laterally by the posterior part of the hypostomal suture; forming, along with the gula, the labiogula. TGMA:0000724 TGMA:0000724 default_namespace postmentum