. A text-book of agricultural zoology. Zoology, Economic. HEMIPTERA. 235 pimctiire the rind of plants and then proceed to suck out the sap, often leaving behind a distinct scar where the proboscis. Fio. 119.—Proboscis of a Hemipteron. has entered (fig. 120, a). The majority live on vegetable juices, but some suck the blood of both vertebrate and invertebrate animals. Four wings are, as a rule, present; but these may be reduced to two, as in the male Scale insects, or none, as in some bugs, plant-lice, and female scales. There are two distinct types of wing seen — one in which the basal half of
. A text-book of agricultural zoology. Zoology, Economic. HEMIPTERA. 235 pimctiire the rind of plants and then proceed to suck out the sap, often leaving behind a distinct scar where the proboscis. Fio. 119.—Proboscis of a Hemipteron. has entered (fig. 120, a). The majority live on vegetable juices, but some suck the blood of both vertebrate and invertebrate animals. Four wings are, as a rule, present; but these may be reduced to two, as in the male Scale insects, or none, as in some bugs, plant-lice, and female scales. There are two distinct types of wing seen — one in which the basal half of the fore- wing is leathery, the other half transparent, known as a hemielytron ; in the second it is quite clear and membranous. The former type is found in the section of Hem- iptera called Heteroptera (fig. 126), the latter in the Homoptera (fig. 121). At one time these two sections were considered two distinct orders of insects. They are now always united together under the order Hemiptera. The Hemiptera all undergo an incomplete metamorphosis,. 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 Theobald, Frederick Vincent, 1868-1930. Edinburgh and London, W. Blackwood and sons
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1899
