Oct., '08] ENTOMOLOGICAL NEWS. 367 



Aphelimis semiflavus n. sp. 



Female. Length 1.08 mm. ; expanse 1.87 mm. ; greatest width of 

 fore wing 0.3 mm. Antennae short, excluding scape about the length 

 of face ; pedicel long, more than three times as long as wide ; funicle 

 joints i and 2 subequal in length and width and each slightly less than 

 one-third length of pedicel; joint 3 two-thirds length of pedicel and 

 about as wide as its tip ; club slightly swollen, ellipsoidal, and about 

 twice the length of pedicel. Eyes faintly hairy. General color black; 

 thorax smooth, shining, scape and pedicel dusky, flagcllum pallid, club 

 becoming somewhat dusky at tip ; front and middle femora and all 

 tibiae somewhat dusky; hind femora straw yellow. Abdomen light 

 yellow shaded around margin with brownish. Wings rather short, 

 otherwise normal. 



Male. Length 0.85 mm.; expanse 1.58 mm.; greatest width of fore 

 wing 0.204 mm. Differs from female in having antennae nearly uniform 

 brown, scape slightly darker, and in the proportions of third funicle 

 joint and club. Third joint cylindrical, twice as long as pedicel and six 

 times as long as broad; club one-quarter longer than third funicle joint, 

 elongate ovate in shape. 



Described from 14 $ 9. specimens reared by C. P. Gillette, 

 Fort Collins, Colo., July 15, 19, 1908, from Myzus persicae, 

 and reared at Washington from the same host sent in by Pro- 

 fessor Gillette. The parasitized host turns black. 



U. S. N. M. type No. 12031. 



Aphelinns nigritns n. sp. 



Female. Lenth, 0.68 mm. ; expanse, 1.7 mm. ; greatest width of fore 

 wing, 0.26 mm. Flagellum of antennae short, not as long as face; 

 pedicel obconical, about twice as long as wide; first and second funicle 

 joints very short, together less than half as long as pedicel; third funicle 

 joint about as long as thick, and about as long as, or slightly shorter 

 than pedicel; club about three times as long as third funicle joint, 

 about twice as long as broad, obliquely truncate at tip. Body uniformly 

 black, shining. Mesoscutum, including parapsides, with faint, sparse, 

 small, irregular punctures. All legs and antennae pale yellow except 

 for a duskiness of the hind tibiae and the tip of the antennal club. 



Male. Unknown. 



Described from six 9 specimens reared by G. G. Ainslie, 

 Bureau of Entomology, Spartanburg, S. C., from To.voptera 

 graminum. 



U. S. N. M. type No. 12032. 



