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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 ...
In one group of insects, the Hemiptera, the dorsal surface of the thorax is typically formed primarily of the prothorax, but also in part by the enlarged posterior portion of the mesonotum, called the scutellum; in the Coleoptera, the scutellum may or may not be visible, usually as a small triangular plate between the elytral bases, thus ...
Scutellum may refer to: Scutellum (insect anatomy), a term used in the anatomy of arthropods; Scutellum (botany), a term used in the morphology of grasses;
It is formed by the prothorax, mesothorax and metathorax and comprises the scutellum; the cervix, a membrane that separates the head from the thorax; and the pleuron, a lateral sclerite of the thorax. In dragonflies and damselflies, the mesothorax and metathorax are fused together to form the synthorax. [1] [2]
scutellar (psct) bristles on the scutellum. They may be marginal or on the dorsal side of the scutellum (called the disc). The chaetotaxy of the pleura is also of taxonomic significance. The characters taken into consideration are presence or absence, the number, and the position of setae and groups of hairs on the
Anatomy of the dorsal aspect of a shield bug. ... pronotum; 26: scutellum; 27: clavus ... Only recently has it been relegated to a subsidiary rank within a larger ...
The posterior of the mesoscutum is separated from the scutellum and the axillae by the transscutal articulation, and scutoscutellar sutures define the axillae from the scutellum. Behind the scutellum, the metanotum is the posterior sclerite of the thorax; this is broadly fused to the propodeum which is the first (anterior) abdominal sclerite ...
A more formal definition is that it is the sclerite from which the pharyngeal dilator muscles arise, but in many contexts that too, is not helpful. [7] In the anatomy of some taxa, such as many Cicadomorpha , the front of the head is fairly clearly distinguished and tends to be broad and sub-vertical; that median area commonly is taken to be ...