. Bulletin of the Department of Agriculture. Agriculture. 4 BULLETIN 966, U. S, DEPARTMENT OF AGRTCULTITRK. The larva has been described as purple, but the mature larva ex- hibits no evidence of this color in life. When preserved in alcohol there is a reddisli and sometimes slightly purplish tinge. The larva can be readily separated from that of E. rlmosalis by the com- plete lack of transverse striation and by the black head. When about to transform to pupa, the larva forms, usually at or near the sur- face of the ground, a substantial cocoon (fig. 5), Avhich is evidently well coated on
. Bulletin of the Department of Agriculture. Agriculture. 4 BULLETIN 966, U. S, DEPARTMENT OF AGRTCULTITRK. The larva has been described as purple, but the mature larva ex- hibits no evidence of this color in life. When preserved in alcohol there is a reddisli and sometimes slightly purplish tinge. The larva can be readily separated from that of E. rlmosalis by the com- plete lack of transverse striation and by the black head. When about to transform to pupa, the larva forms, usually at or near the sur- face of the ground, a substantial cocoon (fig. 5), Avhich is evidently well coated on the exterior with a viscid substance VIVIk. ^!^#^ to which particles of sand become at- FiG. 4.—Full-grown larva of European horse-radish web- worm : «, Dorsal view ; h, lateral view. Four times nat- ural size. tached. These cocoons are large in comparison to the pupa and irregidar short oval in shape. THE PUPA. The II u r» a (fiff. 6) is of robust form with long wing cases. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Department : Supt. of Docs. , Govt. Print. Off.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
