332 



JoHANNSENOMYiA, nov. nom. 



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

 included all the species previously placed in Johannscniella by various 

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

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

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

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

 vein. The change of name from Johannseniella to Johannscnomyia 

 becomes necessary because of the following facts : Ceratolophiis was 

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

 as the type species is also the type of Scrromyia^, Ccratolophus is a 

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

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

 with the name Johannscniella, thereby inadvertently adding another 

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

 compliment to a worker w4io 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. 



Kiefifer in a paper in the Memoirs of the Indian Museumt dealing 

 with Indian Chironomidcv makes Johannscniella a synonym of Sphcv- 

 romyas, ignoring the fact that the type of the latter, fasciatits 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 



infuseated 3 



2. Wings with 2 black spots; tibiae entirely black 1. dimidiata. 



— Wings (PL XXII, Fig. 12) with 2 black spots; tibia? black at apices 



only 2. bimaculata. 



3. Abdomen covered with silvery pruinescence 3. argentata. 



— 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. flavidula. 



— 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. 



