. Eastern forest insects. Forest insects. 8. Head IV2 times as long as broad; length to mm. Reticulitermes arenicola Head 1% times as long as broad; length 6 to 7 mm. Reticulitermes flavipes Head 1% times as long as broad Reticulitermes hageni Head twice as long as broad Reticulitermes virginicus 9. Head cleft and bilobed in front; front of head blackish Calcaritermes nearcticus Head not cleft or bilobed in front; front of head blackish to dark castaneous behind 10. Anterior of head tuberculate Crytotermes brevis Anterior of head not tuberculate Cryptotermes cavifrons 10 Subterranean T
. Eastern forest insects. Forest insects. 8. Head IV2 times as long as broad; length to mm. Reticulitermes arenicola Head 1% times as long as broad; length 6 to 7 mm. Reticulitermes flavipes Head 1% times as long as broad Reticulitermes hageni Head twice as long as broad Reticulitermes virginicus 9. Head cleft and bilobed in front; front of head blackish Calcaritermes nearcticus Head not cleft or bilobed in front; front of head blackish to dark castaneous behind 10. Anterior of head tuberculate Crytotermes brevis Anterior of head not tuberculate Cryptotermes cavifrons 10 Subterranean Termites Subterranean termites belong to the family Rhinotermitidae. Because these termites all require a constant supply of moisture, their colonies are found either entirely or partly in the ground. They may, however, feed in wood located some distance from the ground, but they always maintain connection with the ground unless a continuous supply of water is otherwise available. In order to attack wood located away from the ground where a sup- ply of water is not otherwise available, they construct covered passageways, commonly called shelter tubes (fig. 5A). Regardless of the extent of damage they cause to the interior of wood (fig. 5B), these termites always leave a covering shell intact. Because of this, there usually is no external evidence of infestation, even though the interior of the wood may be de- stroyed. The first indication of infestation may be the swarming. A. 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 ; for sale by the Supt. of Docs. , U. S. G. P. O
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectforestinsects
