A description of the last larval instar (based on the exuvium) of Trogoderma megatomoides Reitter, 1881 (Coleoptera: Dermestidae) is presented. New morphological characters of T. megatomoides larvae such as general morphology of antenna, epipharynx, mandibula, maxilla, ligula with labial palpi, hastisetae, legs, terga and condition of antecostal suture are documented and discussed. General morphological differences among mature larvae of the following Trogoderma species are compared and summarized: T. anthrenoides (Sharp, 1902), T. glabrum (Herbst, 1783), T. grassmani Beal, 1954, T. inclusum LeConte, 1854, T. ornatum (Say, 1825), T. simplex Jayne, 1882, T. sternale sternale Jayne, 1882, T. megatomoides Reitter, 1881, T. variabile Ballion, 1878.