NORTH AMERICAN TETRASTICHUS — BURKS 595 



Host. — Either the clover seed midge, Dasyneura leguminicola 

 (Lintner), or the clover leaf weevil, Hypera nigrirostris (Fabricius). 

 The former is probably the true host. 



Distribution. — Indiana, Kansas, Nebraska, New Brunswick, Oregon, 

 Washington. 



TETRASTICHUS ROSAE Ashmead 



Tetrastichus rosae Ashmead, Trans. Amer. Ent. Soc, vol. 13, p. 134, 1886. — 

 Cbesson, Synopsis of families and genera of Hymenoptera, p. 245, 1887. 



Brown or black, noniridescent ; apices of coxae, trochanters, bases 

 and apices of femora, tibiae, and basal segments of tarsi, light yel- 

 low or white; color of legs somewhat variable; middle and hind 

 tibiae may be slightly darkened, and femora sometimes almost 

 entirely yellow. 



■Female. — Length, 1.8 mm. Antennae inserted slightly ventrad of 

 level of ventral margins of compound eyes; apex of scape not quite 

 reaching level of anterior ocellus; pedicel and all funicle segments 

 equal in length ; club three-fourths as long as funicle ; length of malar 

 space three-fourths as great as height of compound eye; postocellar 

 line twice as long as ocellocular. Mesopraescutum as long as wide 

 and bearing a single row of setae at each lateral margin ; submarginal 

 vein of forewing with four to six dorsal bristles, marginal vein 

 thickened at base and three and one-half times as long as stigmal vein ; 

 apex of hindwing blunt, width of fringe at posterior margin one- 

 fourth width of wing at hamuli. Propodeum lightly reticulated, 

 paraspiracular carinae absent ; mesal length of propodeum one-third 

 length of mesoscutellum ; propodeal spiracles almost touching anterior 

 margin; gaster narrow, acutely pointed, twice as long as thorax. 



Male. — Unknown. The male specimens mentioned in the original 

 description are not conspecific with the female. 



Type locality. — Jacksonville, Fla. 



Type. — U.S.N.M. No. 2843. The type series is mixed; a lectotype 

 female has, therefore, been designated. 



Hosts. — Mealy rose gall, Diplolepis ignotus (Osten Sacken) ; Dip- 

 lolepis ostensackeni (Beutenmiiller). 



Distribution. — Colorado, District of Columbia, Florida, Idaho, 

 Michigan, Virginia. 



TETRASTICHUS BLASTOPHAGI (Ashmead) 



Hyperteles blastophagi Ashmead, Trans. Amer. Ent. Soc, vol. 14, p. 202, 1887. 

 Tetrastichus blastophagi (Ashmead) Gibault, Societas Entomologica, vol. 31, 

 p. 35, 1916. 



Body light brown, noniridescent ; antennae, apices of femora, tibiae, 

 and basal segments of tarsi light yellow or white ; metatibiae may be 

 slightly darkened. 



