506 



Useful keys to the North American species of Heterothrips, 

 Anthothrips, Cnjptothrips and Phloeothrips are also given, with a 

 bibhography of 36 works. 



Wallace (F. K). Ninth Ann. Rept. (1915-1916) Indiana State 

 Entomologist, Fort Wayne, 1917, 230 pp. Illustrations & 60 figs. 

 [Received 26th September 1918.] 



This report gives an account of the iosect pests of the year under 

 review and is compiled for the guidance of growers, the information 

 being of a popular nature and very few scientific names being included. 

 The inspection of nursery and imported stock has been carefully 

 carried out. The European elm scale [Gossyparia spuria, Mod.], 

 which has only once before been found in Indiana, and then only upon 

 a few trees in a nursery, appeared in one locality. Scalecide 1 part 

 to 15 of water proved effective and will be used largely in the spring 

 in an effort to exterminate this scale before it becomes established 

 and spreads. Individuals of Lagoa crispata, Pack, (yellow flannel 

 moth), which has not previously been recorded in Indiana, were 

 found feeding on sassafras in June 1916. The larvae are covered 

 with hairs that produce intense irritation in the skin of the person 

 handhng them. It is hoped that all larvae were collected, but watch 

 will be kept for them in the coming season. An account is given of 

 the spraying of fruit-trees as practised in Indiana. 



KiNSEY (M. E.). Onion Thrips {Thrips tabaci). — Ninth Ann. Rept. 

 {1915-1916) Indiana State Entomologist, Fort Wayne, 1917, 

 pp. 43^7, 5 figs. [Received 26th September 1918.] 



Thrips tabaci has seriously injured onions in Indiana for the past 

 few years, especially iu districts where they have been grown 

 commercially for some time. Females appear in the spring or early 

 summer, having presumably spent the winter in the rubbish and old 

 tops on the ground. Eggs are deposited just imder the epidermis of 

 the leaves and hatch in a few days, the nymphs immediately beginning 

 to suck the plant juices. After passing through several moults the 

 adult stage is reached, the whole life-cycle lasting only three weeks, so 

 that several generations may be produced in. a year. A contact spray 

 should be appHed at intervals of not more than 3 weeks until the pest 

 is controlled. The formula recommended is 4*3 oz. of nicotine 

 sulphate and 4 lb. whale-oil soap to 50 U.S. gals, water. A spraying 

 machine designed by the author for the control of this thrips is 

 described with diagrams. 



Snodgrass (R. E.). Some of the Important Insect Pests of Indiana. 



— Ninth Ann. Rept. {1915-1916) Indiana State Entomologist, Fort 

 Tfa?/we, 1917, pp. 105-230, 60figs. [Received 26th September 1918.] 



This paper describes many of the common insect pests found in 

 Indiana with the usual recommendations for their control. The 

 author has observed the parasitism of the tussock moth [Hemero- 

 campa leucostigma] by a parasite that he believes to be Dibrachys 

 houcheamis, though other authors have recorded this Chalcid 

 as a hyper-parasite only. Besides agricultural pests, a number of 

 household and granary pests are also dealt with. 



