A NEW CECIDOMYIID PARASITE OF THE WHITE FLY. 



By E. p. Felt, 



state Entomologist, Albany, New York. 



The following relates to a species of gall midge or Itonidid which 

 w-as evidently reared in considerable numbers from the white fly, 

 Aleunjcus chagentios, since a series of some 25 flies were submitted 

 for determination. 



The insect is undescribed and apparently represents a new genus. 



CLEODIPLOSIS, new genus. 



This genus is erected for a species which would normally fall 

 into the genus Clinodiplosis Kieffer were it not for the occurrence 

 of a well-defined tooth upon the claws of all three pairs of legs. 

 The structure of the dorsal and ventral plates and the simple style 

 precludes it being referred to either Plesiohremia Kieffer, Dicho- 

 diplosis Riibsaamen, or Thomasia Riibsaamen. The females of the 

 last two genera also have a long ovipositor which is an additional 

 bar to placing this species in either. 



The type of the new genus is Gleodiplosis aleyrodici, new species. 



CLEODIPLOSIS ALEYRODICI, new species. 



Male. — Length 1.2 mm. Antennae one-fourth longer than the 

 body, thickly haired, light brown, 14 segments, the fifth having 

 stems with a length 1| and !{■ times their diameters respectively; 

 basal enlargement subglobose, with a subdorsal whorl of moderately 

 long, stout setae and near the middle a circumfilum with moderately 

 long, heavy loops, the latter not extending to the base of the pyri- 

 form, distal enlargement, which latter has a length about one-fourth 

 greater than its diameter, a distinct constriction near the basal 

 third, basally and apically circumfila, the loops of the distal filum 

 extending to the base of the next segment ; terminal segment having 

 the basal portion of the stem with a length 5 times its diameter; 

 the distal enlargement distinctly produced, with a length nearly 

 3 times its greatest diameter, a constriction near the basal third 



No. 2444-ProceEDINQS U. S. NATIONAL MUSEUM. VOL. 61. ART. 23. 



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