. A manual of zoology. Zoology. Fig. 528.âPhylloxera vastatrix. (From Ludwig - Leunis.) 1, winged generation: â¢J, grape root, with nodosities (a) caused by Phylloxera; 3, wingless root-generation. the pests. Winged males appear in the autumn, and the fertilized eggs endure the winter. Of all the species none is more injurious than the PliyUoxera vasta- trix* of the grape, which with us does slight damage, but in Europe has destroyed whole vineyards. This is one of our returns for the many pests the Old World has sent us. Sub Order III. APTERA. Wingless bugs with direct development, commonly k
. A manual of zoology. Zoology. Fig. 528.âPhylloxera vastatrix. (From Ludwig - Leunis.) 1, winged generation: â¢J, grape root, with nodosities (a) caused by Phylloxera; 3, wingless root-generation. the pests. Winged males appear in the autumn, and the fertilized eggs endure the winter. Of all the species none is more injurious than the PliyUoxera vasta- trix* of the grape, which with us does slight damage, but in Europe has destroyed whole vineyards. This is one of our returns for the many pests the Old World has sent us. Sub Order III. APTERA. Wingless bugs with direct development, commonly known as lice, of which three species attack man, one living in the hair {Pedicidus capitis*), the others (P. vestimentoram* imdi PlitJiirius Fio. Wi.âPhthirius inguinaiis, ,. J., ii u 1 /-viT â crab louse. (After Leuckart.) inguinal IS*) upon the body. Other species live en other mammals. Order IX. Diptera. Like the Rhyncliota, the Dijitcra, or flies, are sucking insects, but the sucking tube or haustollum is different, here consisting of a tube formed of both Libium and labrum, and containing stylets which include, besides mandiljles and maxillas (often rudi- mentary), the hypopharynx (fig. 488), the maxillary palpi being present. Only the anterior wings (hence Diptera) are well de- veloped, the hinder wings being replaced by the halteres or lial- ancers, small drumstick-like structures richly supplied with nerves and functioning as organs of equilibration. The thorax is, as in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
