Vol. XXvi] ENTOMOLOGICAL NEWS. 149 



some indication of parasitism but the eggs failed to give up 

 any parasites. When placed in the presence of chinch bug eggs 

 the females show but slight interest in the eggs and do not 

 become excited when they come in contact with them. The 

 length of the adult life has been found to range from seven 

 to fourteen days when fed on sweetened water. 



As a factor in the natural control of the chinch bug, Abella 

 subfiava plays a very insignificant part. The fact that only 

 two parasites have been reared from the large number of 

 eggs examined seems to indicate that parasitism of chinch 

 eggs by it is accidental rather than natural. 



Preliminary List of New Jersey Acarina. 



By HARRY B. WEISS, New Brunswick, N. J. 



The arrangement of the following list is in accordance with 

 Banks' Catalog of the Acarina or Mites of the United States, 

 Proc. U. S. Nat. Mus. 1907, Vol. 32. The list is of course 

 very incomplete, but it is hoped by collections to add further 

 to our knowledge of the Acarian fauna of the state. My 

 thanks are due Mr. Nathan Banks for determinations made 

 in this group. 



Family TETRANYCHIDAE. 



Bryobia Koch. 



B. pratensis Carman. Greenloch, Moorestown, Englishtown and 

 other parts of the state. The Clover Mite. Feeds on clover 

 and foliage of fruit trees. 



Tetranychus Dufour. 



T. bicolor Bks. Westfield, 7-22-14, and other parts of state. Tak- 

 en on apple, silver maple and other plants. 



T. bimaculatus Harvey. Throughout the state. The common 

 "red spider" of greenhouses. Attacks roses, carnations, palms, 

 violets and many other plants grown under glass. Quite a 

 pest some seasons on various outdoor plants. 



T. pilosus. Newark, on fruit trees. E. L. Dickerson. 



Family TROMBIDIIDAE. 

 Microtrombidium Haller. 



M. locustarum Walsh. Occurs upon eggs, nymphs and adults of 

 grasshoppers. 



