The pterothoracic nota each have two main divisions : the anterior, wing-bearing alinotum and the posterior, phragma-bearing postnotum.
2.
Phragmata ( singular : phragma ) are plate-like apodemes that extend inwards below the antecostal sutures, marking the primary intersegmental folds between segments; phragmata provide attachment for the longitudinal flight muscles.
3.
:I can't find my Liddell, because I was going to parse the word properly = dia + phragma; I'm very surprised to see p-h / aspirated'p'in the previous comment; I would have expected-phragma to be written with a phi ( f ); on the other hand come to think of it the addition of the dia-prefix would aspirate an initial p-on the root . . . . pragma coming from " praxis ", action; so the " etymology " is " between / within / through action " ( i . e . life ? . . . and I've probably mussed up possible meanings of " dia " ); or whatever other meaning " pragma " can derive from " praxis ".
4.
:I can't find my Liddell, because I was going to parse the word properly = dia + phragma; I'm very surprised to see p-h / aspirated'p'in the previous comment; I would have expected-phragma to be written with a phi ( f ); on the other hand come to think of it the addition of the dia-prefix would aspirate an initial p-on the root . . . . pragma coming from " praxis ", action; so the " etymology " is " between / within / through action " ( i . e . life ? . . . and I've probably mussed up possible meanings of " dia " ); or whatever other meaning " pragma " can derive from " praxis ".
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