The scutellum is the posterior portion of either the mesonotum or the metanotum of an insect thorax; however, it is used almost exclusively in the former context, as the metanotum is rather reduced in most insect groups. In the Hemiptera, and some Coleoptera, the scutellum is a small triangular plate behind the pronotum and between the forewing bases.^[1] In Diptera and Hymenoptera, the scutellum is nearly always distinct, but much smaller than (and immediately posterior to) the mesoscutum.

• Scutellum in various types of insect
• 
  26 = Heteroptera scutellum
• 
  6 = Diptera scutellum
• 
  9 = Coleoptera scutellum
• 
  10 = Formicidae scutellum

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• Scutoid