Forest entomology . 15, could not be said, however, that they were doing appreciabledamage to the trees. Usually local, and not common. The beetle is rather large and conspicuous, being from 7 to 9 length, and the whole body is of a uniform coppery colour, andbeing rounded, the colour varies in detail as the result of refraction ;legs and antennae red, the club of the latter somewhat darker. Genus Phyllobius. This genus contains a large number of species, most of which maybe found in the forest. They are generally got in the early part ofthe year, and often do considerabledamage


Forest entomology . 15, could not be said, however, that they were doing appreciabledamage to the trees. Usually local, and not common. The beetle is rather large and conspicuous, being from 7 to 9 length, and the whole body is of a uniform coppery colour, andbeing rounded, the colour varies in detail as the result of refraction ;legs and antennae red, the club of the latter somewhat darker. Genus Phyllobius. This genus contains a large number of species, most of which maybe found in the forest. They are generally got in the early part ofthe year, and often do considerabledamage to the foliage. As a rule,the species may be recognised bytheir more or less brilliant species, viz., P. urticce (alneti,F.), is very common on nettles, andthough not an arboreal species, mightnevertheless be taken as a typicalexample of the genus. It is quitepossible the specific distinction, asassociated with forest trees, mayhitherto not have been carefullyrecognised. Phyllobius maculicornis (Germ.). This beetle was discovered as doingconsiderable damage on recentlyplanted trees of mountain - ash andbirch at Kielder, in Northumberland. In factquite defoliated as the result of their injuries. On mountain-ash, fig. 71 is given as an example of the injuryreferred to by the beetle. Fig. 71.—Foliage of mountain-ash eatenby Phyllobius maculicornis. the trees were 72 FOREST ENTOMOLOGY. Hylobius abietis, Fabr. (Pine Weevil).1 This is considered one of the worst insect enemies the forester hasto deal with; in fact, it may be said to be the most dreaded beetle. From an entomological point of view, it is very closely allied to thegenus Pissodes, and it may therefore be well to state that the chiefgeneric difference is that in Hylobius the antennas are inserted onthe rostrum near its apex, while in Pissodes the antennae are inserted


Size: 1199px × 2084px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1900, bookpublisheredinburghwblackwoo