. An introduction to zoology : for the use of high schools . ich include the butterflies {Papil-ionid(e), hawk-moths {Sphingidce), silk-worm moths (Bomhy-cidce), and other families. It is in this order that remarkable instances of protective resemblanceto other animals (so-called mimicry) was first observed. The bee-moths(e. g., Sesia tlujshe and others) receive their names from (and owe theirfreedom from attack to) their resemblance to various stinging wasps. 34. The most highly developed of all insects are undoubtedlythe Hymenoptera. They exhibit this in the reduction of the num-ber of the a
. An introduction to zoology : for the use of high schools . ich include the butterflies {Papil-ionid(e), hawk-moths {Sphingidce), silk-worm moths (Bomhy-cidce), and other families. It is in this order that remarkable instances of protective resemblanceto other animals (so-called mimicry) was first observed. The bee-moths(e. g., Sesia tlujshe and others) receive their names from (and owe theirfreedom from attack to) their resemblance to various stinging wasps. 34. The most highly developed of all insects are undoubtedlythe Hymenoptera. They exhibit this in the reduction of the num-ber of the abdominal segments and in the concentration of thenervous system, as well as in the social life which characterizesthe higher genera. It is possible to recognize in the parts ofthe mouth, all of those met with in the locust, but the charac-teristic tongue of the bee is formed by the fusion and jii-olong- HIGH SCHOOL ZOOLOGY. 217 ation of the inner lobes of the labium, while the external lobesso marked in the locust here only form the paraglosste (Fig. 147).. Fig. 147.—Part of the Head with the Mouth-parts of the Honey ^, labrura ; k, mandible; k=, niaxillse ; ta-, maxillary palps ; uk,submentum ;k, mentuni; g, palpifer ; al, external lobe of the labium (jjaraglossie); il, internallobe, (tongue); ta-, labial palps. Both pairs of wings are transparent, the anterior lai-ger thanthe posterior, and united with them in flight. The lowestgroup, the saw-flies {Tenthredinidce), have caterpillar-like larvsewhich live on leaves, but are distinguishable from caterpillarsby the greater number of abdominal feet. Most of the families,however, either provide for the larvie, cells of wax, or of paper,or in the soil, and stock these with suitable food, which mayconsist of honey, or pollen and honey, or of paralyzed insects(Sphegichn), or else they deposit their eggs in the bodies of otherinsects, or in plants, in such a way that the larvse on hatchingare surrounded with suitable food. In e
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1889
