134 



PROCEEDINGS OF THE NATIONAL MUSEUM 



Procladius culicifortnis (Linnaeus) 



Figure 7/ 

 Tipiila culiciforniis Linnaeus, Systema naturae, ed. 12, p. 978, 1767. 

 Tanypus chorens Meigen, Klassifikazion und Beschreibung der Europaischen 

 zweifliigeligen Insekten, vol. 1, p. 23, 1804, new synonomy. 

 I have examined a series of specimens from the British Museum 

 (Natural History) identified by F. W. Edwards as P. culiciformis 

 (Linnaeus) and P. choreus (Meigen). Although shght differences in 

 size and color exist between the series I have seen, the chaetoxy, 

 ratios, and genitalia are not significantly different. Essential 

 features are compared below from Edward's material. 



p. culiciformis P. choreus 



The males identified by Edwards as P. choreus had a short, sparse 

 beard about 4 times as long as the diameter of the tarsus while the 

 specimen of P. culiciformis had hairs no longer than 3 times the diam- 

 eter of the tarsus. In the absence of genitaha differences this 

 beard difference could be construed as only varietal. 



Material examined: In BM(NH): 2 males, Radwell, Hertfordshire, 

 May, 1918, F. W. Edwards; 1 female, Slapton, South Devonshire, 

 June 9, 1920, F. W. Edwards; 1 female, Ruislip, Middlesex, Sept. 7, 

 1914, F. W. Edwards [determined as P. choreus (Meigen)]; 1 mals, 1 

 female, Radwell, Hertfordshire, June, 1918, F. W. Edwards [deter- 

 mined as P. culiciformis (Linneaus)]. 



