PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



SMITHSONIAN INSTITUTION 



U. S. NATIONAL MUSEUM 



Vol. 90 Washington: 1941 No. 3120 



TWO NEW SPECIES OF CECIDOMYIID FLIES FROM 

 PHLOX 



By Charles T. Greene 



The two new s^Decies of Diptera described below were reared by 

 Dr. C. R. Neiswander, of the Ohio Agricultural Experiment Station, 

 in Ohio from phlox that had been severely damaged. As a result 

 of experiments conducted by Dr. Neiswander it was discovered that 

 the new species of Hyperdiylosh was responsible for the injury. 

 The other new species, which belongs in the genus Lestodiplosis, is 

 undoubtedly a predator on the former. 



Genus HYPERDIPLOSIS Felt 



HYPERDIPLOSIS PHLOX, new species 



Male. — Length 1 to 1.25 mm. Antenna nearly twice the lengti: 

 of the body, binodose, brown, yellowish basally; with 14 segments 

 the fifth segment with three circumfili (fig. 24, 5), the middle cir 

 cumfilus slightly shorter than the other two ; the basal node rounded 

 the other nearly one and one-half times as long as its diameter, 

 slightly constricted in the middle; the stems varying in length from 

 three to three and one-half times as long as their diameter. Palpus 

 pale yellow, slender, quadriarticulate ; segments of nearly equal 

 length. Face pale, almost white. Mesonotum light amber, shining, 

 in certain lights with a very delicate whitish pruinosity on the sides, 

 forming two narrow longitudinal stripes; scutellum pale yellow; 



407301—41 547 



