For full-size image, click here...then click the image again.

This is a companion photo to the preceding image of this series...indicating a few additional parts not labelled in that image, namely the: ocellar triangle, vertex, lateral edges of the transverse suture, scutellum, post-scutellum, halteres, and scutum (often referred to as the "mesonotum", though that's considered incorrect usage by some...see below).
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The following quote from pg. 24 of the "Manual of Nearctic Diptera(1)" may be useful to note:

"The mesonotum includes the entire dorsum of the mesothorax. Its three basic components are the prescutum, the scutum (mesoscutum), and the scutellum; it also includes a fourth part posteriorly, the postnotum (metanotum, postscutellum), which is probably derived from an inter-segmental acrotergite. Unfortunately, many dipterists have misapplied the term mesonotum to the scutum only."
"The true prescutum, as opposed to an anterior portion of the scutum that Curran and others incorrectly called the prescutum, is greatly reduced in the Diptera."
Thus care should be taken in interpreting Curran and other author's use of the term "prescutum", which likely refers to the presutural area of the scutum (= "mesonotum" of those author's).