Text-book of comparative anatomy . and forma short tube. In the other Microlepidoptera the mandibles lose their teeth and become rudimentary. On the anterior maxilla; only 1 ridge is found. The ridges VI ANTENNATA—MOUTH PARTS 449 mcf. of the 2 pairs of maxillae fit together to form a sucking proboscis which can easilyhe coiled up. In the Macrohjiiifujitcra the mandibles have disappeared, .but thesucking proboscis formed by the 2 ,, ridges of the anterior maxillae is onthe contrary very strongly developed C(,and capable of being coiled. Themaxillar and labial palps are nearlyalways retained, th
Text-book of comparative anatomy . and forma short tube. In the other Microlepidoptera the mandibles lose their teeth and become rudimentary. On the anterior maxilla; only 1 ridge is found. The ridges VI ANTENNATA—MOUTH PARTS 449 mcf. of the 2 pairs of maxillae fit together to form a sucking proboscis which can easilyhe coiled up. In the Macrohjiiifujitcra the mandibles have disappeared, .but thesucking proboscis formed by the 2 ,, ridges of the anterior maxillae is onthe contrary very strongly developed C(,and capable of being coiled. Themaxillar and labial palps are nearlyalways retained, the former generallyin a very reduced condition (1-jointedin the Xjihingina and many Mliofnt-locera). In some of the latter themaxillar palp has, however, al-together disappeared. A series analogous to that of theLepidoptera is afforded by the Hy-inf/to/it ra. At the head of the seriesstands the Tcnthrcdinidce, whose mouth parts -<show great agreement with those ofthe Micropterygina. Besides the mandibles which, as in the other. flni. FIG. 80S.—Mouth parts of a Tenthredo as before.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanatomycomparative
