Forest entomology . notcovered by elytra and u.: Cryptorrhynchus lapathi(Linn.) This insect is often found inthe south of England, doing con-siderable damage to alders ofthe black and white varieties,willows, poplars, and birch. Itgenerally attacks alders in pref-erence to the other trees, and pre-fers young trees from four to sixyears of The insect isinjurious both in the larval andperfect forms. The beetle eats the bark and sapwood of young shoots,and the larva gnaws under the bark, sometimes penetrating into thepith, thus doing considerable damage to the young stems—so
Forest entomology . notcovered by elytra and u.: Cryptorrhynchus lapathi(Linn.) This insect is often found inthe south of England, doing con-siderable damage to alders ofthe black and white varieties,willows, poplars, and birch. Itgenerally attacks alders in pref-erence to the other trees, and pre-fers young trees from four to sixyears of The insect isinjurious both in the larval andperfect forms. The beetle eats the bark and sapwood of young shoots,and the larva gnaws under the bark, sometimes penetrating into thepith, thus doing considerable damage to the young stems—so much so,that they break off and die. Fig. 78, a, b, shows typical damage. The beetle flies about the end of April or beginning of May. Thelarvae are said to appear in about fourteen days after egg-laying, and 1 Fowler, vol. v. p. 328. 2 Commander Walker has always found it in and about osier-beds. Fig. 78, a, b.—Larval burrows of Cryptorrhyn-chus lapathi in alder stems. (From ForestProtection, by W. R. Fisher.). COLEOPTERA. 83 the beetle emerges in autumn, and winters either in the galleries orunder moss. The beetle, fig. 79, is from 7 to 8 mm. long, and is very character-istically coloured. The prevailing colouris black, with a distinct variegatedband of pinkish - red at the base ofthe elytra, and with a more or lessdistinct band across the middle of theelytra. The whole body is covered withrather coarse, imbricate, yellowish-whitescales. The rostrum is stout, and canbe folded into a depression under the thorax. ; 79-_Cryptorrhynchus lapathi. As regards remedies, it will obvi- (from Forest Protection, by w.° R. Fisher.) ously be the best means of extermin-ation to cut down the infested shoots containing the larvae or perfectbeetles, and burn them. Genus Balaninus. This genus contains several species which are all arboreal, andtherefore of special interest to the student of forest entomology. Thespecies B. nucum may, however, be taken as typical of the mos
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