. A manual for the study of insects. Insects. H YMEN OP TERA. 619 gif'i-cei), is most common on the red oak, but it occurs also on the black oak. In this gall the space between the kernel and the outer layer is quite densely filled with a porous mass, which suggests the name spongy. The Larger Empty Oak-apple, Holcaspis inmiis (Hol- cas'pis i-na'nis).—There are two oak-apples which are very similar in structure, and which may be termed the empty oak-apples. In these the space between the central kernel. Fig. 746.—Gall of Awphibolips coccinece. and the outer shell contains only a few, very slen
. A manual for the study of insects. Insects. H YMEN OP TERA. 619 gif'i-cei), is most common on the red oak, but it occurs also on the black oak. In this gall the space between the kernel and the outer layer is quite densely filled with a porous mass, which suggests the name spongy. The Larger Empty Oak-apple, Holcaspis inmiis (Hol- cas'pis i-na'nis).—There are two oak-apples which are very similar in structure, and which may be termed the empty oak-apples. In these the space between the central kernel. Fig. 746.—Gall of Awphibolips coccinece. and the outer shell contains only a few, very slender, silky filaments, which hold the kernel in place. The larger of these two galls measures an inch or more in diameter, and is found on the scarlet oak and the red oak. The Smaller Empty Oak-apple, Holcaspis centricola (H. cen-tric'o-la), is found on the post-oak, and measures three fourths of an inch or less in diameter. It also differs from the preceding in that the outer shell is mottled. The Bullet-gall, Holcaspis globulus (H. glob'u-lus).—One of the most common galls on our oaks in the Northeastern. 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
