The Bi Monthly Zoological Bulletin Of The Division Of Zoology Of The Pennsylvania Department Of Agriculture Volume 5 Issue 5 PDF Download

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...The Clcadas, Plant Llce, Scale Insects, Etc. Family IX. Coccidse. The Scale Insects, Bark Lice and Mealy Bugs. In our Monthly Bulletin for January, 1906, Volume III., No. 9, page 274, we commenced "A General Systematic Study of Insects--Part I." In that Bulletin was published a brief discussion of the Arthropoda or "Joint-footed" animals, and a fuller treatise of Hexapods or True Insects, and the relationships of the three other classes composing the sub-kingdom. We there published concerning the chief of the lower Orders of Insects. The last was concluded o-n page 292 of Volume III. This subject was resumed in Volume IV., No. 2 for June, 1906, page 48, completing the study of the Suborder Heteroptera, or True Bugs, on page 72. It was further resumed on page 69 of Volume V for July, 1907, discussing the various Families of the Sub-order Homoptera, excepting the Coccidae or Scale Insects, and concluded on page 86 of this Volume. We take this occasion to offer the correction that the egg punctures shown in Fig. a, Plate IX., of the July Bulletin are not made by the Buffalo Tree-hopper, but by another species of the same genus known as the Cow Tree-hopper, scientific name, Ceresa tauriwi. It now remains for us to discuss the Family Coccidae or Scale Insects and thus conclude the study of Homoptera, or the second Sub-order of the large Family of Hemiptera, generally and properiy called "The Bugs." To the Family of Cocddl belong those insects known as Mealy Bugs, and also the Scale Insects or Scale Bugs, sometimes called Bark Lice. In the adult stages especially these creatures do not resemble those forms of life that we are accustomed to call Insects, and it is difficult for the uninitiated to observe one...