. Eastern forest insects . The southern lyctus beetle', Lyctus planicollis LeC, is one of the most common of the destructive powder-post beetles in this coun- try. It is widely distributed, but is most injurious in the Southern States. Adults are usually black or almost black, have a wider- than-long prothorax with distinctly separated punctations on the disk, and are from 4 to 6 mm. long (fig. 38). The elytra are almost three times as long as wide, bear straight lines of fine long hairs, and are marked with double rows of elongate punc- tures. Seasoned or partially seasoned wood of oak, ash,
. Eastern forest insects . The southern lyctus beetle', Lyctus planicollis LeC, is one of the most common of the destructive powder-post beetles in this coun- try. It is widely distributed, but is most injurious in the Southern States. Adults are usually black or almost black, have a wider- than-long prothorax with distinctly separated punctations on the disk, and are from 4 to 6 mm. long (fig. 38). The elytra are almost three times as long as wide, bear straight lines of fine long hairs, and are marked with double rows of elongate punc- tures. Seasoned or partially seasoned wood of oak, ash, and hickory are especially subject to attack. Freshly cut wood is not attacked. Eggs are laid in the open ends of pores of longitudinal vessels in the wood, at depths of 4 to mm. Hatching occurs within a week or two. The larvae burrow through the wood; their tunnels run parallel with the grain and are filled with fine powdery dust. 129
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectforestinsects
