INSECUTOR INSCITI^ MENSTRUUS 63 



49. Hoplandrothrips juniperinus Hood. — May 9-19 ; abun- 

 dant on dead branches of red cedar (Juniperus virginiana L.). 

 Known only from two trees growing on Plummer's Island. 



50. Hoplandrothrips funebris Hood. — May 9-October 12; 

 both sexes common under loose bark of willow, oak, and Cot- 

 tonwood. Known from Illinois, Missouri, Maryland, District 

 of Columbia, and Florida ; taken also by R. A. Cushman and 

 the writer at Vienna, Virginia. 



51. Hoplandrothrips insolens Hood. — October 12 and April 

 12 ; one male, taken among dead leaves in fork of willow tree, 

 and one female, taken under loose sycamore bark. Previously 

 known from one female taken on elm in Illinois. 



52. Acanthothrips magnafenioralis Hinds. — Is common 

 throughout the year, under and on the bark of various trees, 

 and in dried leaves, hibernating as adult. Pupse taken May 

 12 matured May 23 and 25. Recorded from Florida, Massa- 

 chusetts, Illinois, and Tennessee ; occurs also in New York, 

 Maryland, District of Columbia, and Virginia (coll. Hood). 



53. Cryptothrips junctus Hood. — October 5 ; three males, 

 taken under bark on dead willow branch. Recorded only from 

 Michigan and Illinois ; taken at Beltsville, Maryland, March 2, 

 1913, under bark of scrub pine (Pinus virginiana Mill.). 



Family MEGATHRIPID^ Karny 



54. Megalothrips spinosus Hood. — June 8-October 12; both 

 sexes and many nymphs from dead leaves in fork of willow 

 tree, and from dead willow branch. Recorded from Pennsyl- 

 vania and Minnesota; occurs also in New York (coll. U. S. 

 Nat. Mus.), Massachusetts, Virginia, Maryland, and Illinois 

 (coll. Hood), often common in hollow twigs and in galls on 

 golden rod stems. 



Family IDOLOTHRIPID^ Bagnall 



55. Idolothrips coniferarum Pergande. — April 20- June 8 ; 

 abundant on red cedar (Juniperus virginiana L.). Recorded 

 from Massachusetts and Virginia ; occurs also in New Hamp- 

 shire and Maryland (coll. Hood). 



56. Idolothrips tuberculatus Hood. — June 29 ; one male, 

 from branch of red oak. Recorded only from Illinois, but 



