743 



climbing roses, as also did S. capitalus, de Geer. Biantlms and Gypso- 

 phijlla were damaged by Hypem {Phytonomus) arator, L. Strawberries 

 were attacked by both larvae and adults of Anthonomus rubi, Hbst. 

 This weevil is now much more common in Holland than formerly, 

 though the damage done by it is not as yet important. Rhynchites 

 aeneovirens, Marsh, {mimitus, Hbst.) was also reported as attacking 

 the flower- stalks of strawberries. Beech woods suffered seriously 

 from Orchestes fagi, L., which also attacks cauliflowers, young rye and 

 poppies, as well as apple and walnut trees. The chief damage is done 

 by the larvae. Some injury by 0. quercus, L., was also reported. 

 No practical method of controlling these weevils is known. Canadian 

 poplars Avere attacked by Cryptorrhynchus lapathi, L. ; cherries by 

 Scolytus {Eccop)togaster) rugulosus, Ratz. , and apple twigs by Xyleborus 

 dispar, F. Much damage was also done by Aniphitnallus [Rhizotrogus) 

 solstitialis, L. 



Among Hymenopterous pests, Emphytus cinctus, L. was found to 

 hibernate as a larva and not as a pupa, as had been previously stated. 

 Roses also suffered from Ardis bijmnctata, Klug, Eriocampoides 

 aethiops, ¥., Hylotoma rosae, L., Blennocampa pusilla, Klug, Erio- 

 campoides limacina, L., E. anmdipes, Klug, Pteronus ribesii, Scop. 

 {ventricosus, Latr.), and Croesus septentrionalis, L. Lophyrus nifus 

 did noticeable damage to a plantation of eight-year-old firs. Cladius 

 difformis, Panz., was reported as eating the edges of the leaves of straw- 

 berries under glass. Elm leaves were mined by Kaliosysphinga tdmi, 

 Sund. This pest is a more serious one in America, into which it has 

 been imported from Europe. There is apparently only one generation 

 in the year ; the eggs are laid on the leaves and pupation takes place 

 in the superficial layers of soil. In one nursery the numbers were so 

 great that the plants suffered very seriously. Cephus pygmaens, L., 

 attacked wheat, and meadows were injured by Lasius flavus, L., and 

 Formica nigra, L. ; conversion to arable for several years was suggested 

 as a remedy. 



Among the Rhynchota, Ting is rhododendri, Horv., was found on 

 Kalmia latifolia (mountain laurel) ; the insect hibernates in the egg 

 stage in the tissues of the leaf, these hatch out in May ; spraying with 

 tobacco will kill the larvae, but a watch should be kept for adults and 

 the spraying repeated to kill the larvae from eggs laid by them. 

 Spraying in winter with from 6 to 8 per cent, carbolineum will control 

 Psylla pyrisuga, Forst., and the same remedy is useful against the 

 winter eggs of Psijlla niali, Forst. A somewhat serious outbreak of 

 Psylla buxi, Geoffr., was reported in box from Aalsmeer. It is not yet 

 known whether hibernation takes place as egg or imago ; the damage 

 done is not very serious, but nevertheless merits the attention of 

 growers. Aphis abietina, Walk., caused great destruction at Schoorl 

 to Picea alba, P. menziesi and P. pungens ; P. excelsa did not suffer 

 so much. Spraying with 5 J lb. soft soap, 2 J lb. soda and 1\ pints 

 petroleum in 25 gals, of water, and also with a nicotine spray, had been 

 carried out by the owner of the nurseries and he was advised to continue 

 their use. These Aphids do not hibernate in the egg-stage, but as wing- 

 less females, which may be found all the winter through on spruce. 

 Multiplication appears to be parthenogenetic, as males and eggs are 

 as yet unknown. Winged individuals occur in numbers in summer. 

 Winter spraying with from G to 8 per cent, carbolineum is very effective 



