332 



JoHANNSENOMYiA, nov. nom. 



In my previous paper in this Bulletin, Article IV of this volume, I 

 included all the species previously placed in Johannscniclla by various 

 authors, but have now erected another genus, Hartomyia, for the 

 reception of species having the media petiolate. In the present paper I 

 have, therefore, restricted the scope of Joliannscnomyia, including in it 

 only those species which have the media furcate proximad of the cross 

 vein. The change of name from JoJiannscniella to JoJiannsenomyia 

 becomes necessary because of the following facts: Ceratoloplnts was 

 erected by Kieffer* with one species included, femoraUis Meigen; but 

 as the type species is also the type of Serroinyiaj, Ceratolophus is a 

 synonym of Scrroniyia. Failing to recognize this fact, Kieffer pro- 

 posed to replace the name Ceratolophus Kieffer, not Boucort (1873), 

 with the name JohannsenicUa, thereby inadvertently adding another 

 synonym to Scrromyia. As the name he proposed was intended as a 

 compliment to a worker who is a distinguished authority on the group, 

 I consider it advisable to retain the generic name in a form as near to 

 the original as possible. 



Kieffer in a paper in the IMemoirs of the Indian Museumt dealing 

 with Indian Cliiroiwniidcc makes JohannsenicUa a synonym of Sphcc- 

 romyas, ignoring the fact that the type of the latter, fasciatiis Meigen, 

 does not possess the characters indicated in his description of that 

 genus. 



Key to Species 



1. Wings with distinct black marks other than the infuscation on the 



cross vein 2 



— Wings without any black marks, only the cross vein in some species 



inf uscated 3 



2. Wings with 2 black spots; tibice entirely black 1. dimidiafa. 



— Wings (PI. XXII, Fig. 12) with 2 black spots; tibiae black at apices 



only 2. himaculata. 



3. Abdomen covered with silvery pruinescence 3. argent afa. 



— Abdomen without silvery pruinescence 4 



4. Cross vein of wing very conspicuously darker than other veins, 



which with the field of the wing are whitish 4. albaria. 



— Cross vein of wing not darker than other veins, wings either grayish 



or hyaline, veins brownish 5 



5. Yellow species 5. flavidida. 



— Black or blackish brovrn species 6 



6. Last tarsal joint without spines on the ventral surface 7 



— Last tarsal joint with distinct spines on the ventral surface 12 



*Bull. Soc. Ent. France, 1899, p. 69. 



tSee Meigen 's Syst. Beschr. Eur. Zweifl. Ins., Vol. 1, 1818, p. 83. 

 tVol. 2, 1910, p. 194. 



