A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . ng the buccal cavity. In the Odonata the lingua is a small, rounded lobe, as also in theEphemeridee; in the nymph, however, of Heptagenia (Fig. 72) it is highly developed, accordingto Vayssiere, who seems in-clined to regard it as repre-senting a pair of tongue in Hemiptera issaid by Leon to be present inBenacus griseus (Say) and tocorrespond to the subgalea of FIG. 72. — Lingua
A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . ng the buccal cavity. In the Odonata the lingua is a small, rounded lobe, as also in theEphemeridee; in the nymph, however, of Heptagenia (Fig. 72) it is highly developed, accordingto Vayssiere, who seems in-clined to regard it as repre-senting a pair of tongue in Hemiptera issaid by Leon to be present inBenacus griseus (Say) and tocorrespond to the subgalea of FIG. 72. — Lingua of a May-Hy,//?>/:/«»;/- >t<i<t, xio: in, central; i, lateral pieces.—After Brulle or hypodactyle of Au- Vayssiere from Sharp. ._. t, . douin (Fig. 73), but this ap-pears to correspond to the labium proper, rather than a true lingua,the latter not being differentiated in this order. In the Coleopterathe lingua is rather small. In beetles, as Anopthalmus (Fig. 74), itforms a setose lobe; and a well-developed nerve, the lingual nerve,passes to it, dividing at the end into several branches (n-T), In Sialisthe lingua is short, much less developed than usual, being rounded,. TEXT-BOOK OF ENTOMOLOGY
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
