Forest entomology . Fig. 95.—Markings o/Hylesinus fraxiui on ash stemafter removal of bark. 1 See Trans. High, and Agr. Soc. Scot., 1899. COLEOPTERA—SCOLYTID^E. 105 The beetle (fig. 96) itself is about ^ inch in length, oval form, pitchy-brown or ashy-grey colour; under side of abdomen covered with thickgrey hairs; the antennae and tarsi of a yellowish-brown colour. Various remedies have been given for this insect pest, includingthe recommendation of planting onsuitable soil, &c. ; but such adviceis largely unnecessary, inasmuch asit only attacks felled logs or dyingtrees and poles, and all pr
Forest entomology . Fig. 95.—Markings o/Hylesinus fraxiui on ash stemafter removal of bark. 1 See Trans. High, and Agr. Soc. Scot., 1899. COLEOPTERA—SCOLYTID^E. 105 The beetle (fig. 96) itself is about ^ inch in length, oval form, pitchy-brown or ashy-grey colour; under side of abdomen covered with thickgrey hairs; the antennae and tarsi of a yellowish-brown colour. Various remedies have been given for this insect pest, includingthe recommendation of planting onsuitable soil, &c. ; but such adviceis largely unnecessary, inasmuch asit only attacks felled logs or dyingtrees and poles, and all practicalforestry insists on cutting back-going ash-trees more quickly thanany other species of tree, in orderto prevent rapid depreciation ofthe Fig. 96.—Hylesinus fraxini. (From Barbey.) Hylesinus oleiperda (Fabr.)x This beetle is found on ash, but,in contrast to the preceding species,is always got on the small top-shoots. It is, however, as a rule,a South Country species, thebranches shown in fig. 97 beingfrom a tree in Wiltshire. It is aspecies which hatches out veryreadily in confinement, so that thebranches containing the larvre maysimply be put in a box in winterand left there until the beetlesappear, about the end of July. The mother-gallery is very short,being only about half an inch inlength, and apparently only single-armed. The larval galleries vary very much in length, being from half an inch to two inches. Theyare often crowded so closely together that every portion of the spacebecomes pitted with larval furrows. 1 I found the three species—viz., H. crenatus, H. fraxini, and //. oleiperda—all in Belton Park, Lincolnshire, July 1907.
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