22 NORTH AMERICAN THYSANOPTERA. 



(7) -SEolothrips fasciatus Linnaeus, 1758. Redescribed by Hinds, Mon. Thys. N. 



Amer., Proc. U. S. Nat. Mus., vol. 26, p. 127, figs., 1902. 



Habitat: England; Vienna, Austria; Finland; Germany. In the United 

 States — Connecticut; Massachusetts; New York; Indiana; Iowa; Michigan; 

 New Mexico; San Jose and Chico, Cal.; Corvallis, Oreg. 



Food plants: As listed by Hinds — alfalfa, buckwheat, celery, clover, 

 Composita?, oats, onion, tansy, wheat, various grasses and weeds. In Cali- 

 fornia in blossoms of California buckeye {Msculus californica) and monkey 

 flower {Diplacus glutinosus), and on sugar beet foliage. In Oregon on Chrysan- 

 themum leucanthemum, specimens collected by J. C. Bridwell. Taken in 

 California from April to July. 



(8) .ffiolothrips kuwanaii Moulton, Tech. Ser. 12, Pt. Ill, Bur. Ent., U. S. Dept. 



Agr., p. 47, figs., 1907. 



Habitat: Santa Cruz Mountains, California. 



Food plants: California lilac (Ceanothus thyrsijlorus) , elderberry {Samhucus 

 glauca), chamisal (Adenostoma fasciculatum) , purple lupine {Lupinus sp.?), 

 April to July. 



Note. — Specimens of Molothrips kuwanaii collected from the blossoms of 

 Ceanothus thyrsijlorus, at La Honda, Cal., have a variation in the shape of 

 the dark longitudinal band on the wing. This band is widened at its anterior 

 end and often extends across the entire wing. Segment 3 of the antenna is 

 also often brown instead of lemon-yellow, shading to light brown at the tip. 



Molothrips kuwanaii, variety robustus Moulton (Tech. Ser. 12, Pt. Ill, Bur, 

 Ent., U. S. Dept. Agr., p. 48) is withdrawn and included in the species. 



(9) ffiolothrips longiceps Crawford, Pomona College, Journ. Ent., vol. 1, no. 4, 



p. 101, figs., 1909. 

 Habitat: Claremont, Cal. 

 Food plant: Artemisia. 

 Note. — Described from one male. 



5. Genus PARTHENOTHIIIPS Uzel. 



(10) Parthenothrips dracsen^ Heeger, 1854. Redescribed by Hinds, Mon. Thys. 



N. Amer., Proc. U. S. Nat. Mus., vol. 26, p. 176, figs., 1902. 



Habitat: Vienna; Finland; St. Petersburg; Germany; Bohemia. United 

 States — Washington, D. C; Amherst, Mass.; San Francisco and Sacramento, 

 Cal. 



Food plants: After Hinds — DracKtna, Ficus elastica, Kentia belmoreana. In 

 California on Aralia (?) and sago palm {Cycas revoluta). 



6. Genus BALIOTHE-IPS HaLiday. 



(11) BaHothripsbasaUs Shull, Ent. News, vol. 20, p. 224, figs.. May, 1909. 



Habitat: Huron County, Mich. 



On leaves of millet grass {Milium effusum) in August. 



7. Genus THRIPS Linnaeus. 



(12) Thrips madronii Moulton, Tech. Ser. 12, Pt. Ill, Bur. Ent., U. S. Dept. Agr., 



p. 57, fi-gs., 1907. 



Habitat: California; Oregon. 



Food plants: California lilac {Ceanothus thyrsijlorus), mountain laurel 

 {Umbellularia californica), Solanum umbellijerum. Arbutus menziesii, western 

 azalea {'Rhododendron occidentale), lemon blossoms; taken from April to July. 



