. Bulletin of the Department of Agriculture. Agriculture; Agriculture. THE LEAD-CABLE BOEER IN CALIFORNIA. 13 The histerid. larvae appear to be more common in the mines of the Lyctus. The predator Trogosita virescens Fab. was reared from in- fested wood. No Hymenoptera or Diptera were observed in any of the rearings that could be determined as actual parasites of or predators on Scobicia. LIFE CYCLE. According to the observations made at the Los Gatos laboratory, the life cycle of the cable beetle is as follows: The mother beetle excavates an ^gg gallery or burrow in the solid wood and la
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. THE LEAD-CABLE BOEER IN CALIFORNIA. 13 The histerid. larvae appear to be more common in the mines of the Lyctus. The predator Trogosita virescens Fab. was reared from in- fested wood. No Hymenoptera or Diptera were observed in any of the rearings that could be determined as actual parasites of or predators on Scobicia. LIFE CYCLE. According to the observations made at the Los Gatos laboratory, the life cycle of the cable beetle is as follows: The mother beetle excavates an ^gg gallery or burrow in the solid wood and lays her eggs in the pores of the wood from this. (Figs. 10, 14.) The eggs hatch in about 21 days. The larvse mine in the wood (PI. Ill, Fig. 9.—Diagram illustrating seasonal history of the California lead-cable borer. 4 and 5) for about nine months, molting about six times. They then become quiet and remain as prepupse for about six days, whereupon they pupate. The pupa stage lasts for about 14 days and then the transformation to the young beetles occurs. The beetles remain in the wood about 30 days, hardening and maturing. (PI. Ill, Fig. 2.) They then eat their way through the outer wood and bark, emerge, and, if females, start new galleries in the same or another section of wood. (PL III, Fig. 1.) About the time the galleries are 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 Dept. : Supt. of Docs. , G. P. O.
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