AFRICAN APHIDFDAE. 321 



ADhis sorghi, Theobald (The Asal Fly). 



Theobald, First Rept. Wellcome Res. Labs. pp. 43-45, pi. c. (1904); id., 

 Second Rept. pp. 39 & 96 (1906); id., Third Rept. p. 95 (1911); Morstatt, 

 Der Pflanzer, Daressalam, ix, p. 295 (1913). 



Sudan : Kassala, Senaar, Bahr-el-Ghazal, Rahad, Khartoum, Berber (Balfour 

 &c King) ; Southern Nigeria (Jemmett) ; German East Africa (Morstatt) ; 

 Cape Colony : Transkei (Lounsbury). 



Food-plants : Sorghum and Guinea Corn. 



This is the Dura pest of the Sudan; it is also destructive in the Native 

 Territories of the Cape, often appearing in vast swarms. 



Coccinella undecimpunctata, Chilomenes vicina and Exochomus nigromaculatus 

 have been recorded as preying on this species. 



Aphis sorghella, Schouteden. 



Schouteden, Ann. Soc. Ent. Belg. I, p. 137 (1906). 

 Togo : on Sorghum (Busse). 



Aphis gOSSypii, Glover (The Cotton and Melon Aphis). 



Aphis (Siphonophord) citrifolii, Ashmead. 



Aphis citrulli, Ashmead. 



Aphis cucumeris, Forbes. 

 Glover, Patent Office Report, p. 62 (1854) and ibid. p. 68 (1855); Glover, Rept. 

 Dept. Agri. U.S.A. p. 36 (1876); Ashmead, Orange Insects (1880), and Florida 

 Dispatch, n. 5, vol. i, p. 241 (1882) ; Forbes, Twelfth Rept. Nox. and Benef. 

 Ins. Illinois, pp. 83-91 (1883) ; Pcrgande, Insect Life, vii, pp. 309-315 (1895) : 

 Theobald, Sec. Rept. Well. Lab., p. 93 (1906) ; Lounsbury, Agric. Journ. Cape 

 Col. (Oct. 1908) ; Vassiliev, Trd. b. entom. ucen. Kom. Gl. Upr. Zeml. St. 

 Petersburg, viii, 6, pp. 1-24. figs. 1-8 (1910). 



Cape Colony: Cape Peninsula, Paarl, Uitenkage (Lounsbury) ; Trans- 

 vaal : Onderstepoort, on Cosmia, 6. iv. 1913 (G. Bedford) ; Christiania, on 

 melons and cucumbers, 16. iv. 1913 (G. Bedford); British East Africa: 

 Njoro, on cotton, 16. i. 1912 (T. J. Anderson); Uganda: Entebbe (C. C. 

 Gowdcy); Sudan: Kamlin (Dickinson) ; Egypt: Cairo, on cotton and Hibiscus 

 (F. C. Willcocks); Southern Nigeria : Ibadan, on cotton, viii. 1912 (A. D. 

 Peacock) ; Kamerun : on cotton (Busse). — North America generally ; Bonito, 

 Mexico (Townsend) ; Montserrat, British West Indes (Hubbard) ; Brazil 

 (Koebele); Adelaide, Australia (Koebele) ; India (Lefroy) ; England (Theobald) ; 

 Russia ( Vassiliev). 



Food-plants : Cottons (Gossypiiuu), Lycospermum, Winter Nightshade 

 (Solanum sp.), Melons, Cucumbers, and rarely on Oranges, in Africa. In 

 England on Melons, and in America practically on all Cucurbitaceac, Portulaca 

 oleracea, Capsella bicrsa-pastoris, Lepidium mrginicum, Rumex spp., Lappa major, 

 Taraxacum dens-leonis, Chenopodium album, Plant ago mrginica, Stellaria media, 

 Convolvulus sp., Acalypha mrginica, Diodiaieres, Nepeta glechoma, Trifolium 

 pratense, Malvo rotundifolia, Phaseolus nanus. Spinacia oleracea, Humuhts lupulus i 



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