51 



GowDEY (C. C). Report of the Entomologist.— ^wn. Rept. Ugmida 

 Dept. Agric.for the Year ending 31st March 1917, Kampala, 1917, 

 pp. 32-37. [Received 3rd December 1917.] 



A list of the scale-insects attacking coffee is given ; these include : — 

 Icerya nigroareolata, Newst., which is frequently found on crotons and 

 occasionally attacks coffee ; Asterolecanium cojjeae, Newst. ; Pseudo- 

 coccus citri, Risso, which has previously been recorded [see this Revieiv, 

 Ser. A, V, p. 1 18]. The life-history as occurring in Uganda is given ; 

 the most usual injury is to the foliage and roots. Remedial measures 

 should be directed against the young larvae, as these are unprotected 

 by any waxy covering. P. virgatus, Ckll., attacks the foliage and green 

 t\\^gs. Pidvinaria psidii, Mask., is always accompanied by the sooty 

 fungus, Capnodium brasiUense, which lives on the exudations of the 

 insect. Coccus viridis is so highly parasitised by a small Chalcidid 

 and preyed upon by Coccinellids, especially Chilocorus discoideus, 

 that in several localities remedial measures are unnecessary. The 

 caterpillars of the Limacodid, Parasa sp., were not abundant, the 

 cocoons being parasitised by Chrysis {Tetrachrysis) lyncea, F., and 

 C. posfscxteUaris, Mocs. Agrotis spp. (cutworms) were active on some 

 estates, but no damage was reported. Leucoptera {Cemiostoma) coffeella, 

 Staint., first appeared as a coffee pest in Uganda in July 1916, and is 

 as yet confined to one district. The larvae mine the leaves until they 

 appear scorched and eventually drop. The only control possible is 

 the collection of infested leaves. Stephanoderes cojjeae, Haged. 

 (coffee berry borer), though still ubiquitous, has considerably decreased 

 in numbers. Other stem-borers of coffee were Nitocris princeps, Jord., 

 Apate indistincta, Murr., and A. monacha, F. The Aphid, Toxoptera 

 coffeae, Nietn., frequently occurs on young coffee plants ; the best 

 treatment is 1 lb. whale-oil soap to 7 gallons of water. Antestia 

 lineaticollis, Stal {orbitalis var. faccta, Germ.), as anticipated, has 

 become a serious coffee pest ; it is being investigated and will be 

 more fully dealt with later. Another bug, Lycidocoris mimeticus, 

 R. & P., has been found attacking young leaves, but nothing is yet 

 known of its habits. 



The pests of cacao were, for the most part, the same as those 

 recorded in the previous report. They include the Aphid, Toxoptera 

 coffeae, Nietn. {theobromae, Schout.), and the scale-insects, Pseudo- 

 coccus sp. and Inglisia castilloae var. theobromae. The former scale 

 attacks the pods and leaves and the latter the pods, flower-clusters and 

 young twigs ; both can be controlled by spraying with kerosene emulsion. 



Tea is not largely grown m Uganda ; the only insects as yet observed 

 on this crop are Aspidiotus transparens, Green, on the leaves. Coccus 

 discrepans. Green, on the roots, and Helopeltis bergrothi, Rent., var., 

 on the young leaves and tender shoots. 



On cotton, the stainers, Dysdercus spp. and Oxycarenus spp., were 

 abundant, but Farias insulana (spiny bollworm) was less prevalent 

 than in the previous year. The pink bollworm [Pectinophora 

 gossypiella] has not yet been detected. 



Rubber pests included the scales, Aspidiotus destructor, Sign., and 

 Icerya sulphurea, Lind., not hitherto recorded from Uganda. 



Fruit-tree pests included : on orange, Trioza sp. (citrus psylla) ; 

 Aphis citri, Ashm. ; Papilio demodocus, Esp. ; Ceratitis capitata, Wied. ; 



