Comments on the origin of the midgut in
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A. Glenn Richards Jr.
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Article
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1932
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John Wiley and Sons
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English
β 462 KB
## Abstract Reviews the question of the origin of the midgut of insects with its diverse appearances and interpretations. Without doubt the midgut epithelium in some insects is derived from the lower layer, but in other insects from the tips of the stomodaeal and proctodaeal invaginations. The ques