Fifth report of the United States Entomological Commission, being a revised and enlarged edition of Bulletin no7, on insects injurious to forest and shade trees . ¢â¢wide; the holes for the exit of the beetle,of wbich two are represented in the en-graving, being 2 in diameter. Theprimary gallery is nearly straight, with,in the cases noticed by us, only one setof secondary galleries arising on oneside, as represented in the figure. Thesecondary galleries arefrom 1 to nearly 2inches in length, andat the end a little overhalf as wide as themain gallery. At oneend the main galleryopens into a broa
Fifth report of the United States Entomological Commission, being a revised and enlarged edition of Bulletin no7, on insects injurious to forest and shade trees . ¢â¢wide; the holes for the exit of the beetle,of wbich two are represented in the en-graving, being 2 in diameter. Theprimary gallery is nearly straight, with,in the cases noticed by us, only one setof secondary galleries arising on oneside, as represented in the figure. Thesecondary galleries arefrom 1 to nearly 2inches in length, andat the end a little overhalf as wide as themain gallery. At oneend the main galleryopens into a broad irregular cell, where the worm i,rob-ably transforms into the pupa, connecting with thehole for the exit of the beetle. Another form of cell without any lateral or second-ary galleries is represented at Fig. 245. The arrowindicates a point in the gallery made when the larvawas small. A specimen taken from this mine was âPrimaryminealso submitted to Dr. Horn for identification. It oc- ^ ^; ^^^Z- phus lu yellow pmo. curred under the bark of the southern or yellow pine Georgia. Packardat Atlanta, Ga., where I collected it in April, 1881. <^^-. Fig. 244.âMiue of Tomicus calligraphiis insouthern pitch pine, Houston, Tex.âPackard del.
Size: 1095px × 2281px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashingtongovtprin
