32 NORTH AMERICAN THYSANOPTERA. 



33. Genus NEOTHRIPS Hood, 1908. 



(94) Neothrips corticis Hood, Bui. 111. State Lab. Nat. Hist., vol. 8, art. 2, p. 372, 



figs., 1908. 



Habitat: Urbana and Hillery, HI. 

 Taken under bark in winter. 



34. Genus CRYPTOTHRIPSi xjzel, 1895. 



(95) Cryptothrips califomicus Daniel, Ent. News, vol. 15, p. 293, November, 1904. 



Redescribed by Moulton, Tech. Ser. 12, Pt. Ill, Bur. Ent., U. S. Dept. Agr., 

 p. 66, figs., 1907. 



Habitat: California, Oregon, and Washington. 



Often taken under the old shells of the brown apricot scale (Lecanium corni 

 Bouche (armeniacum Craw)) and black scale (Saissetia olese Bern.). 



Taken on foliage of peach, French prune, and Bartlett pear, also on leaves 

 of chamisal (Adenostoma fasciculatum) and tanbark oak (Quercus densiflora) 

 and other plants. 



(96) Cryptothrips carbonarius Hood, Bui. 111. State Lab. Nat. Hist., vol. 8, art. 2, 



p. 376, figs., 1908. 

 Habitat: Pulaski, 111. 

 Taken in sweepings from grass and weeds. 



(97) Cryptothrips rectangularis Hood, Can. Ent., vol. 40, no. 9, p. 307, figs., 1908. 



Habitat: Urbana, 111., and Harrisburg, Pa. 



Taken under dead bark in peach tree in Illinois and "In burrow of lepi- 

 dopterous or coleopterous larva in dead willow stem." 



35. Genus LEPTOTHRIPS Hood, 1909. 



(98) Leptothrips asperus Hinds, Ent. News, vol. 20, p. 249, June, 1909. 



Cryptothrips asperus Hinds, Mon. Thys. N. Amer., Proc. U. S. Nat. Mus., 

 vol. 26, p. 205, figs., 1902. 

 Phyllothrips asperus Hood, Can. Ent., vol. 40, no. 9, p. 305, 1908. 

 Habitat: Amherst, Mass. 

 Taken on grape. 



36. Genus ZYGOTHRIPS Uzel, 1895. 



(99) Zygothrips longiceps Hood, Bui. 111. State Lab. Nat. Hist., vol. 8, art. 2, 



p. 364, figs., 1908. 



Habitat: Carbondale, 111. 

 Taken in a gall on Solidago. 



37. Genus PHL(EOTHRIPS HaHday, 1836. 



(100) Phlceothrips uzeli Hinds, Mon. Thys. N. Amer., Proc. U. S. Nat. Mus., vol. 



26, p. 196, figs., 1902. 

 Habitat: Amherst, Mass. 

 Taken on various grasses and clover and on Ulmus montana var. pendulu. 



(101) Phlceothrips pergandei Hinds, Mon. Thys. N. Amer., Proc. U. S. Nat. Mus., 



vol. 26, p. 197, figs., 1902. 

 Habitat: Amherst, Mass. 

 Taken on grass. 



' For Cryptothrips asperus Hinds, see Leptothrips asperus, No. 98. 



