OF OSHOGBO AND ILESHA DISTRICTS, SOUTHERN NIGERIA. 



275 





1910. 



1911. 





VI. |VII.|VIII.| IX. 1 s. 



XI. 



XII. 



I. 



II. 



ni. 1 IV. 



V. 







Rainy Season. 



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- 



- 



- 



Rainy Season. 



TiBANIDAE. 



























Chrysops longicornis, F 



Hippocentrum versicolor, Theo. 

 Haematopota decora, Walk. 

 Tabanus subangustus, Ric. 



„ quadrisignatus, Ric. ... 



„ taeniola, P. de B. 



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MUSCIDAE. 



























Glosshia palpalis, R.D. ... 

 Stomoxys nigra, Macq 



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HiPPQBOSCIDAE. 



























Hippobosca maculata. Leach ... 















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Stegomyia africana.— This mosquito bites only at dusk ; just before aud after 

 sunset. Directly darkness comes, it troubles one no more. This was particularly 

 noticeable in Oshogbo in March w^ien, for a time, it was the only mosquito 

 present. 



Mansonioldes uniformis. — All specimens of this mosquito caught at Oshogbo 

 after September, 1910, were affected with an immature parasitic mite. This 

 species is common in Oshogbo in January and August. I could, however, get 

 specimens whenever I chose in the Oshogbo Jail. I never succeeded in finding 

 the larvje. 



Culex duttoni is very common in Oshogbo during October. 



Tabanus subangustus. — This fly has also been caught by me in July, 1910, 

 at Ibadan. It is very common in Oshogbo in May and October. The females 

 are attracted by light and white clothing towards dusk and in the early morning. 



T. thoracinus. — One specimen of this fly was caught on a window-pane in 

 Ikirun Railway Station, It may have come into the district by train. 



Haematopota decora. — This fly is very common in Oshogbo all the year round, 

 but especially so in November. It does not bite man if animals are present and 

 it seem-s to be especially fond of horses. It is most troublesome in the early 

 morning and late evening. 



Hippocentrum versicolor is the commonest biting fly in the Oshogbo 

 district in June, July and August, excepting perhaps Stomoxys nigra. In my 

 experience it is not seen during any other month. 



21367 0- 



