Definition of Orthorrhapha
: a large suborder of Diptera that usually includes the Nematocera and many of the Brachycera but is sometimes restricted to the more primitive families of Brachycera and that is distinguished by a pupal case opening by a T-shaped cleft behind the head or by a transverse slit between the seventh and eighth abdominal segments
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Origin and Etymology of orthorrhapha
New Latin, from orth- + -rrhapha (from Greek rhaphē seam, from rhaptein to sew together)
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