The Coccidae of California a Descriptive List of the Different Scale Insects F
The Coccidae of California a Descriptive List of the Different Scale Insects F
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This species is held in check by an internal chalcid parasite. THE COCCIDAE OF CALIFORNIA. 45 Chionaspis quercus Comst. (Oak Scale. ) Scale, of Female. Long, narrow at anterior end, much widened posteriorly, quite convex. Exuviae brownish yellow, remainder of scale white, though often appearing gray from dust and hairs from the stem to which . The scale is attached. Body nf Female. The last segment with the anterior group of spin- nerets consisting of about 10, the anterior laterals of from 17-...20, and the posterior laterals of from 10-18. This species is peculiarly characterized by having an undivide'd lobe on the meson; this lobe is large and rounded distally. The second and third lobes of each side are very small and are laterad of small incisions in the margin of the segment. In each case there is a reniform thick- ening of the body wall bounding each incision anteriorly. There is also a similar incision with a rudimentary lobe and reniform thickening of the body wall about midway between third lobe and the penultimate segment.
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To quickly assess the difficulty of the text, read a short excerpt:
This species is held in check by an internal chalcid parasite. THE COCCIDAE OF CALIFORNIA. 45 Chionaspis quercus Comst. (Oak Scale. ) Scale, of Female. Long, narrow at anterior end, much widened posteriorly, quite convex. Exuviae brownish yellow, remainder of scale white, though often appearing gray from dust and hairs from the stem to which . The scale is attached. Body nf Female. The last segment with the anterior group of spin- nerets consisting of about 10, the anterior laterals of from 17-...20, and the posterior laterals of from 10-18. This species is peculiarly characterized by having an undivide'd lobe on the meson; this lobe is large and rounded distally. The second and third lobes of each side are very small and are laterad of small incisions in the margin of the segment. In each case there is a reniform thick- ening of the body wall bounding each incision anteriorly. There is also a similar incision with a rudimentary lobe and reniform thickening of the body wall about midway between third lobe and the penultimate segment.
What to read after The Coccidae of California a Descriptive List of the Different Scale Insects F?
You can find similar books in the "Read Also" column, or choose other free books by Edward K Carnes to read onlineMoreLess
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