DUEHAM DIPTEEA. 1 63 



XXVII. 267. 



7 (6). Femora without any trace of a wart beneath. 



(1394. villosa, v. Ros.) 



8 (5). V.4 4 forked (V. 18), no wart beneath the femora. 



(1395. aucta, Fin.) 



9 (4). Ocellar bristles absent. Pubescence very faint, head 



very large, and puffed out at the back. Third 

 antennal joint usually with a pointed beak (III. 42). 



269. Pipunculus, Ltr. 



The specific differences are very slight, but the follow- 

 ing is from Verrall's table, whose minute descriptions 

 should be consulted. 



10 (58). Wings with the stigma distinct, C 3 darkened and 



nearly as long as or longer than C 4 . 



11 (12). V.4 4 forked, scutellar bristles distinct. 



1397. Pipunculus fur catus, Egg. 

 Barnard Castle, 1 ?, 26-6-01. 



12 (11). V.4 4 not forked, scutellar bristles faint or absent. 



13 (40). Abdomen entirely dull (except in P. obiusinervis, ?). 



All femora entirely bare. 



14 (39). Fore and mid femora not shining behind or beneath, 



unless occasionally in a female. 



15 (28). It is a male. 



16 (23). Depression on the hypopygium (the last segment 



bending under the abdomen=the anus) large. 



17 (20). Large species, 4-4^ mm. 



18 (19). Humeri blackish brown, as well as the halteres and 



tarsi. ( I 398. zonatus, Ztt.) 



19 (18). Humeri and tarsi yellowish, halteres brownish yellow 



or even darker. ( I 399- fascifies, Ztt.) 



20 (17). Not large species, 3-3I mm. 



21 (22). Moderate sized species, 3! mm. 



(1400. modestus, Hal.) 



22 (21). Small species, 3 mm. Tibiae and tarsi mainly dark. 



(140 1. fuscipes, Ztt.) 



23 (16). Anal depression small. 



