. Eastern forest insects. Forest insects. to mm. long. The elytral declivity of the female is steep, opaque, finely granulate, and marked by rather large striae punc- tures. Galleries run obliquely across the grain of the wood at depths of an inch or more (fig. 101). Eventually they branch and the arms follow the grain. Other eastern members of the genus and their hosts are as follows: Xyleborus pint Eichh.—probably occurs in various hard- woods and conifers; X. howardi Hopk.—pines; X. cavipennis (Eichh.)—recorded from Rhizophora in southern Florida; X. obliquus (LeC.)—birch, hickory,
. Eastern forest insects. Forest insects. to mm. long. The elytral declivity of the female is steep, opaque, finely granulate, and marked by rather large striae punc- tures. Galleries run obliquely across the grain of the wood at depths of an inch or more (fig. 101). Eventually they branch and the arms follow the grain. Other eastern members of the genus and their hosts are as follows: Xyleborus pint Eichh.—probably occurs in various hard- woods and conifers; X. howardi Hopk.—pines; X. cavipennis (Eichh.)—recorded from Rhizophora in southern Florida; X. obliquus (LeC.)—birch, hickory, and chestnut; X. riibricollis Eichh.—oak; X. lecontei (Hopkins)—hickory and palm in Flo- rida; X. tachygraphus Zimm.—wide variety of deciduous trees; X. obesus LeC.—wide variety of deciduous trees; X. sayi (Hop- kins)—wide variety of deciduous trees; X. dispar (Fab.)—wide variety deciduous trees and certain conifers; X. volvulus (Fab.) —probably various deciduous trees and shrubs in southern Flo- rida; and X. pecanis Hopk.—various hardwoods in Southern States. Xylosandrus zimmermani (Hopk.), an introduced species, has been recorded in southern Florida. Its hosts are listed as Ardisia sp., Ocotea catesbyana, and probably Chrysobalanus. X. germanus (Blandford), also an introduced species, breeds in the branches, logs, and stumps of elms in areas surrounding New York City and in the Ohio River Valley. It also attacks many other species of hardwoods. Heavy infestations have been found in elms killed. COURTESY OF DUKE UNIV. SCH. OF FOREST. Figure 101.—Tunnels of the ambrosia beetle, Xyleborus xylographus, in the wood of a shortleaf pine. 271. 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 Baker, Whiteford L. (Whiteford Lee), 1903-. Washington : U. S. Dept. of Agriculture, Forest Service
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectforestinsects
