No. 64] DIPTERA OF CONNECTICUT: TAXONOMY 47.") 



O. rubella (O. S.) (Fig. 54, H). 



Ibii'J. Rhypholophus ruhellus Osten Sacken : Mon. Dipt X Viiior 



4:144. 

 1921. Ormosla I'lihella aemqmatica Dietz: Trans. Anicr I^iit Soc 



47 : 249. 



Figs.— Osten Sacken, Ihid., pi. 1, fio-. 15 (wing). Williston, Man. X. Amer. 

 Dipt., Ed. 3:84, fig. 25, sub 11 (wing) ; 1908. Dickinson, Cfls. Wise, p. 190, fig. 70 

 (wing) ; 1932. 



Mesonotuin chiefly lifrht reddi.sh brown ; [)loura .somewhat more 

 darkened. Halteres yellow. Terminal tarsal segments (hiskv. .Male 

 hypopygium (Fig. 54*^, H), 5. L. 3.7-4 mm.: w. 4.2-4.:) nun." 9. L. 

 5 nnn.; w. 0.0 mm. 



(Late Aug.-Oct.) Ont., Me., N. H., \'t., Mass., Ct., X. Y., Pa., westw. to Ind., 

 Midi, and Wise, southw. to Ga. 



Connecticut.— Xorfolk, Sept. 5, 1928 (G. C. C), Sept. 11. 1928 (C.P. A.); Salisbury, 

 Sept. 5, 1928 (G. C. C.), Sept. 12, 1928 (C.P. A.): Twin Lakes. Sept. 12, 1928 

 (C.P. A.) : W. Granby, Sept. 11. 1928 (C.P. A.). 



O. serridens Alex. (Fig. 54,1). 



191!>. Ormosla seriidens Alexander; Insec. Inscit. Menst., 7: 144. 



Belongs to the meigemi group. Most readily told by the structure 

 of the nuile hj'popygium (Fig. 54,1). $. L. 3.S-4 nun.: w. 4.5-4.(S 



mm. 



(Apr.) Md., Va. 



O. townesi Alex. (Fig. 54, J). 



193:3. Ormosla townesi Alexander: Journ. N. Y. Ent. Soc. 41 : 99-l(M). 



Belongs to the nimblpeimis group. ]Mesonotal praescutum red- 

 dish brown, contrasting conspicuously with the dark brown i)kMira and 

 posterior sclerites of mesonotum. Halteres pale yellow. Male hypo- 

 pygium (Fig. 54, J) with l)oth dististyles elongate. 6. L. 4.5 mm.: 

 w. 5.8 mm. 9. L. about 5 mm.; w. 6 mm. 



(Late Aug.) N. C. (in mts.). 



Tasiocera Skuse 

 1889. Tasiocera Skuse: Proc. Linn. Soc. X. S. \V. (2) 4: 815. 



Subgenus Dasymolophilus Goetghl)uei- 



1920. Molophllus {Dasymolophilus) Goetghbuer; Ihdl. Soc. Ent. 

 Belgique, 2 : 132. 



A small grou}) of Holarctic crane-flies, now placed as a subgenus 

 of the antipodal genus Tasiocera Sku.se. The present group is well- 

 distinguished from Molophllus by the })resence of ti-icbia in tbe cells 

 of the'^wings; vein ^2 in transverse alignment with /?2 + :{. ^ind bv the 

 male hypopygium having a single dististyle of simple structure. These 

 crane-flies are the smallest species in the local fauna, the adults occur- 



