®mm
Mouth radu la
Digestive gland
Mucus cord
Style    Style   Intestine sac
Fig. 2. Diagrams showing some of the modifications of the alimentary system. Foregut and hindgut indicated by a heavy line internally. A, in primitive insects and many larvae; B, in Orthoptera, Odonata, Hymenoptera, and many Coleoptera; C, in higher Diptcra; D, in Diptera, Nematocera, Lepidoptera; E, in Siphonaptera, Siphunculata; F, in many Hemiptera Heteroptera; G, in Coccidae; H, in larvae of Hymenoptera Apocrita and in larvae of Myrmeleon and other Neuroptera. From Wigglesworth (1950).                                         ^-*
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