146 



T. viridula, Zett., did severe damage to carrots ; the eggs are easily 

 destroyed by spraying with 10 per cent, carbohneum. Rhinocda 

 aceris, L., occurred at midsummer in enormous numbers on maples 

 in one locality, causing defoliation. Aphis po7ni, DeG., was very 

 common in 19l4, spraying with quassia being employed with success, 

 when used early enough. Aphis rumicis, L., did some injury to beans 

 and beets in 1914-1915. Aphis gossypii, Glov., is one of the most 

 common pests of cucumbers. Dentatus {Aphis) crataegi, Kalt., has 

 been recorded from apple trees in several localities. Aphis {Siphon- 

 aphis) padi, L., which did such great damage in 1911 to cereals in 

 southern Sweden, was not recorded during 1912-1916. Brevicort/ne 

 {Aphis) brassicae, L., occurs chiefly in the south of Sweden. Anumphis' 

 {Aphis) farfarae, Koch {pyri, Koch), attacked the leaves of pear 

 trees, causing the formation of galls ; in the autumn this species 

 migrates to Tussilago farfara, on the roots of which it oviposits. Hyal- 

 opterus arundinis, L. {pruni, F.) is very common on plums, sloe and 

 reed. Siphocoryne ligustri, Kalt., a species not previously recorded 

 from Sweden, did great injury to privet, causing the leaves to drop 

 at the end of July and the beginning of August. Myzoides {Myzus) 

 cerasi, F., was also very common during 1914. Rhopalosiphum 

 lactucae, Kalt. (often erroneously recorded as R. rihis, L.) has not been 

 recorded previously as a pest of currants, but in 1915 it caused great 

 injury to them. Red and white currants were mainly attacked, 

 black currants usually escaping, or, when attacked, suffering very 

 little. By the end of August the attack was over. The infestation 

 did not recur in the following year, and it is suggested that the Aphids 

 succumbed to starvation in the autumn of 1915, the currants being; 

 so badly damaged that no food was left for the sexual forms, which 

 live on currant before depositing the winter eggs. The great abimdance 

 of Sonchus in the potato fields may have caused this outbreak, this 

 plant being the alternative host of this Aphid. Macrosiphum rosae, 

 L., was especially abundant during 1914. Prociphilus xylostei, DeG., 

 occurred on cultivated species of Lonicera. Other Aphids recorded 

 were : — Myzus ribis, L., Aphis grossulariae, Kalt., Macrosiphum 

 granarium, Kirby {cereale Kalt.), Acyrthosiphon {M.) pisi, Kalt., Chaito- 

 phorus aceris, L., Pterochlorus roboris, L., Phyllaphis fagi L., Eriosoma 

 {Schizoneura) ulmi, L. Chermes sp. injured nurseries, especially in the 

 south of Sw^eden in 1912, about 200,000 2-4 year-old spruce plants 

 being attacked at Fridhem. Gossyparia {Eriococcus) spuria, Mod., 

 {ulmi, Sign.) was recorded from elm trees in two localities. Pseudo- 

 coccus citri, Riss., occurred on vines and peaches in hothouses ; Aspidi- 

 otus hederae, ValL, on ivy ; Lepidosaphes ulmi, L., on apple, pear, 

 limes, etc. and seems to be spreading; Aidacaspis rosae, Bch., on 

 roses. Eulecanium {Lecanium) corni, Bch., {persicae, auct.) is very 

 common in Sweden, attacking peaches, vine, pear, lilac, etc. ; Physo- 

 kermes coryli,-Ij. occurred on plum and hazel. 



Coleoptera. Trogophloeus pusillus, Grav., injured cucimibers,. 

 melons and Chrysanthemum indiciim. Blitophaga opaca, L., and 

 Phosphuga atrata, L., damaged beet and Cruciferous crops in many 

 localities. Some swarms of Melolontha melolontha {vulgaris, L.) and 

 M. hippocastani, F., were noticed in June 1912, though not so numerous, 

 as in 1908 and 1904. About 6,500 lb. of beetles were collected. In 

 1916 new swarms occurred, though less numerous than during 1912. 



