GENERAL NOTES ON OTHER INJURIOUS INSECTS, ETC. 43 



GENERAL NOTES 

 ON OTHER INJURIOUS INSECTS, ETC- 



GALLS ON OAK TREES. Galls formed by small Hymenopterous 

 insects (Cynips kollari, Htg., Andricus fecundatrix, Htg., A. 

 gemmatus form cortids, Htg., and A. ramuli, Schenck) have been 

 unusually common in the Midland Counties during the past year. 



THE LARGE BLACK SLUG. A correspondent forwarded early 

 in September specimens of the large black slug (Arion empiricorum, 

 Per), which species was present in large numbers amongst cabbages, 

 where they were doing considerable damage. He was recom- 

 mended to apply white hydro-oxide of calcium in a I to 2 per cent, 

 solution in water. 



THE YEW GALL-MIDGE. Many complaints have been received 

 of damage done by the larvae of the Yew Gall-midge (Cecidomyia 

 Jaxi, Inch.). It is largely on the increase, and more prevalent now 

 than ever remembered. I know of no effective method of treatment. 



LARVAE OF THE GOAT MOTH. A series of oak trees very badly 

 attacked by the larvae of the Goat Moth were reported from near 

 Warwick. One tree was past remedy, so was cut down ; the remain- 

 ing ones were treated with stick cyanide, and no further damage 

 has been observed. 



BEETLES DAMAGING MUSHROOMS. A Staffordshire corres- 

 pondent sent in early in October specimens of mushrooms badly 

 damaged by beetles. On opening the specimens, they were found 

 to be infested with two species of small beetles (Mycetophagus 

 .quadripustulatus and Dacre humeralis). Later, from Shropshire, 

 mushrooms were received containing the larvae of the former 

 species. 



THE PINE SAWFLY. Specimens of Lophyrus pint, Linn., were 

 received from Shifnal, Staffordshire, in July, where they were 

 present in large numbers on pines. An account of the life-history 

 and preventive and remedial measures was forwarded to the 

 correspondent. 



