REPORT OF THE STATE ENTOMOLOGIST I913 81 



cc Basal clasp segment of the male genitalia very stout 



Macrolabis Kieff. 

 aa Palpi triarticulate 



b Antennae with 15-20 segments, genitalia of male normal 



D r y o m y i a Kieff/ 



bh Antennae with 13-14 segments, the terminal clasp segment of the 



male genitalia short, swollen, the ovipositor moderate, stout with 



a slender apical spine Cystiphora Kieff .^ 



bbb Antennae with 12 segments, the terminal clasp segment of the 



male genitalia long, slender, the ovipositor short, lobed 



R h i z o m y i a Kieff.^ 

 aaa Palpi Particulate 



b Antennae with 12 segments Coccidomyia Felt. 



bb Antennae with 18 segments Diarthronomyia Felt 



aaaa Palpi uniarticulate 



b Antennal segments 17 or 18, claws trifid 



Guarephila Tav.* (Brazilian) 



RHABDOPHAGA Westw. 

 Dichelornyia Riibs. in part 

 Bertieria Kieff. 



1847 Westwood, J. O. Gardeners Chronicle, p. 588 

 1850 Loew, H. Dipt. Beitr., 4:20, 21 (Cecidomyia in part) 

 1861 Rondani, C. Soc. Sci. Nat. Milano Atti, 2:286 (Cecidomyia in part) 

 1864 Schiner, J. R. Fauna Austrica Fliegen, 2:369 (Cecidomyia in part) 

 1876 Bergenstamm, J. E. & Low, Paul. Syn. Cecidomyidarum, p. 24 

 1892 Rubsaamen, E. H. Berl. Ent. Zeitschr., sy •.346 (Dichelomyia in 

 part) 



1892 Theobald, F. V. Acct. Brit. Flies, p. 50 (Cecidomyia in part) 



1896 Kieffer, J. J. Soc. Ent. Fr. Bui., p. 188-89 (Bertieria) 



1897 Syn. Cecid. de Eur. & Alg., p. 5 (Bertieria) 



1900 Soc. Ent. Fr. Ann., 69 :444 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 351 



1909 Ent. Soc. Ont. 39th Rep't, p. 45 



1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15 :337 



191 1 Felt, E. P. N. Y. Ent. Soc. Jour., 19:43 



This genus comprises a number of large, usually reddish brown 

 forms breeding mostly in woody galls, particularly those on willow. 

 It intergrades with Dasyneura and the more typical members may 

 be distinguished by the usually tapering third vein uniting with the 



^ Calopedila Kieff. and Spartomyia Kieff. are related forms. 



^ Geocrypta Kieff. is allied to this genus. 



^ Ctenodactylomyia Felt, MS may be separated from Rhizomyia by the 

 larger number of antennal segments and especially by the pectinate claws. 



* Scheuria Kieff. is recognizable by the unidentate claws and reticulate 

 icircumfili. 



