118 



on an absolutely bare piece of ground at a little distance from any green 

 growth, more especially any Cruciferous plants on whicb A. brassicae 

 can feed. In the spring, when the adult parasites emerge and the 

 Aphid eggs hatch, the former, being w^inged, fly at once to more favour- 

 able spots, while the latter die of starvation. This method is only 

 applicable in those localities in which the winter is severe enough to 

 ensure that all refuse of cabbage or turnip crops is completely killed. 



GowDEY (C. C). Report of the Entomologist.— ylww. Rept. Uganda 

 Dept. Agric.for the Year ending 31st March 1916, Kampala, 1916, 

 pp. 48-53. [Received 3rd January 1917.] 



On coffee, the following pests are recorded : — Coccidae. Coccus 

 viridis, Green, which is preyed on by two Coccinellids, Chilocorus 

 discoideus and C. punctatus, and Coccus africanus, Newst. ; both of 

 these are controlled by whale-oil soap, kerosene emulsion or resin wash ; 

 Pseudococcus citri, Kiss., against the aerial form of which carbolic acid 

 emulsion is effective, and in the subterranean form, " Black leaf 40 " 

 (40 per cent, nicotine), or a decoction of tobacco refuse. This scale 

 also attacks the pods of cacao, the leaves of citrus and the tubers of 

 dahlias. Stictococcus gotvdeyi, Newst. , is parasitised by the Chalcidids, 

 Coccophagus comperei, Gir., and Epitetrastichus vgandensis, Gir. 

 Minor pests on coffee are Selenaspidiis articulatiis, Morg., Pulvinaria 

 psidii, Msk., Ischnaspis longirostris, Sign., Ceroplastes ceriferus. And., 

 C. galeatus, Newst., and C. vinsonioides, Newst. C. galeatus is para- 

 sitised by the Chalcidids, NeomphaJoideUa ceroplastae, Gir., Eurytoma 

 galeati, Gir., and Scutellista cyanea, Motch. 



Stem borers of coffee include Nitocris princeps, Jord., Apate indis- 

 tincta, Murr., and Apate monacha, F., the first-named being parasitised 

 in the pupal stage by a Braconid. The coffee-berry borer, Stephano- 

 deres coffeae, Haged., is, in the author's opinion, the most serious coffee 

 pest, and experiments are being made to cope with it. Cutworms are 

 always prevalent in the rainy season. Poison-baits are effective and 

 the collection of larvae by hand proves both advantageous and in- 

 expensive under the local conditions. Ceratitis capitata, Wied., was 

 infrequent on coffee, but attacked oranges. Antestia variegata, Thunb. , 

 (variegated bug) only appeared towards the end of the year, and is 

 being investigated. It threatens to become a serious pest, sucking the 

 juice from the berries and causing them to drop. 



Metadrepena glauca, Hmp., often completely defohates the trees, 

 but the larvae are easily controlled, if taken in time, by a stomach 

 poison of Paris green or lead arsenate. The eggs are parasitised by a 

 Chalcidid. 

 " Cacao was attacked by the following scale-insects : — Inglisia conchi- 

 formis, Newst., which is a new pest on cacao and is destroyed by the 

 moth, Eublemma scitula, Ramb. ; Stictococcus diversiseta, Silv., is the 

 worst scale-insect infesting cacao [see this Review, Ser. A, iii, p. 288]. 

 Other food-plants growing in the vicinity of cacao may also be attacked, 

 such as croton, hibiscus, custard apple, mulberry and pigeon pea. 



Helopeltis bergroihi, Reut. (cacao mosquito), though of recent 

 appearance, threatens to become the most serious cacao pest, both the 

 nymphs and adults sucking the juices from the pods and tender shoots. 

 The eggs are laid singly in young shoots or pods. The nymphs hatch 



