no. 2 dimensions of flying animals — greenewalt 17 



Table 4. — data from b. hocking, trans, roy. entomological soc, 

 VOL. 104, PT. 8 (1953) 



Wing- 

 beat Wing Wing 

 rate area length 

 sec-1 mm.^ mm. 



Hymenoptera : 

 Aculeata 

 Apis 198 28.3 9.2 



DiPTERA : 



Brachycera 



Tabanus affinis 119 57.4 14.3 



" septentrionalis 98 29.3 10.2 



Chrysops fur cat a 110 21.9 8.6 



nigripes 109 18.9 8.1 



Drosophila 208 1.5 2.14 



Nematocera 



Aedes campestris 322 6.4 5.3 



" communis 216 3.9 4.4 



" nearcticus 318 3.6 3.8 



" punctor 290 6.4 5.3 



Simulium venusfum 258 3.8 3.2 



vittahim 209 4.6 2>.Z 



Hocking's paper is not clear as to whether the wing areas in the table above 

 are for both wings or only one. In a recent letter he states that the measurements 

 are for one wing and in the case of Apis for a pair of wings on one side. 



