NEW NORTH AMERICAN CHIRONOMIDAE 



BY 



OSKAR AUGUSTUS JOHANNSEN 



Since the publication of the paper on Chironomidae in the New 

 York State Museum Bulletin 86 (Entomology 23), 1905^ there have 

 appeared several papers on this family of flies in which some 

 changes in classification are proposed, making it desirable to give a 

 review of this work. The most important of these papers is J. J. 

 Kieffer's Chironomidae in Genera Insectorum, 42me Fascicule, 

 1906, in which several of the older genera have been subdivided. 

 The necessary changes to bring the key of Bui. 86 (page 89) down 

 to date are given on pages 264 and 270 of this report. 



iSubfamily ceratopogoninae 

 Group Ceratopogon, Bui. 86, p. 92, line 25 



i Last tarsal joint with empodium, either distinct or developed pulvilli- 



form, wings usually hairy, femora without spines, tarsal claws equal 



y Empodium well developed, almost as long as the claws, these without 



setae Ceratopogon* 



;;' Empodium not so distinct, less than half as long as the claws, the 

 latter with setae at the base, hind metatarsus always longer than 

 the following joint, wings often spotted or mottled (Oecacta Poey 



is probably a synonym) Ciilicoides 



a Last tarsal joint without empodium, wings usually bare 

 7. Wing with Ri distinctly separated from the posterior branch of the 

 radius and not connected with it by the cross vein like R24-3. Bezzia' 

 jj Wing with R2-f3 present, crossvein like 



k Media simple Brachypogon 



kk Media with two branches 



/ Femora without stout spines on the underside 



Johannseniella Williston 

 // Some or all femora spinose beneath 



in Neither fore nor hind femora much thickened Palpomyia 



mill Either fore or hind femora thickened 



n Fore femora thickened Heteromyia 



iin Hind femora thickened Serromyia 



* All refarence to this bull2tin will be given in this pap3r as "Bui. 86." 



2 If the names published in the earliest work of Meigan (1800) are accepted by ento- 

 mologists then Tendipes, Pelopia, and Helia will replace respectively Chironomus , Tany- 

 pus, and Ceratopogon. 



3 The homology of the wing venation is incorrectly given on pi. 17, fig. 13-16, in Bui. 86. 

 What is marked R4^5 should bs marked M1..1.2; in fig. 15 Ro.^.3 should be marked Rn + s; in 

 fig. 16 Ra should read R2 + 3, and R2-1-3 should read R.4 + 6. 



264 



