1092 EXPERIMENT STATION RECORD. 



ants and larvicides, even when highh' diluted. Good results were oV)tained from the 

 use of Puraline and Phinotas oil. 



Vernacular names of insects, E. W. Doran (pp. 108-111). — The author compiled a 

 list of 3,500 compound vernacular names of insects and suggests certain rules to be 

 observed in writing these compound words. 



Notes on the larger sugar-beet leaf beetle, F. JI. Chittenden (pp. lll-llo). — Monoxia 

 puncficoUis was very injurious to sugar beets at Rocky Ford, Colo. Notes are^given 

 on the appearance, habits, and life history of this insect. For controlling the beetle 

 the author recommends spraying with Paris green or arsenate of lead. 



Some insects recentlg injurions to track crops, F. IT. Chittenden (jip. li;^-120). — 

 Biological and economic notes on the fall army worm, white grubs, leaf-footed plant 

 ling, \arious species of blister lieetle, Scapteriscus didactylus, S. ahbreviatus, Nysius 

 rninatus, Conzu.t Jn/alinus, ' stra^wherry weevil, mealy bug on peanuts, Elasmopalpus 

 lignosellus, etc. 



Report of tlie entom.olog'ist, C. P. Gilletfe {Colorado Sfn. I\'jii. 1902, pp. 103- 

 IJC, j>ls. I!) . — During the season considerable loss was suffered from the attacks of 

 grasshoppers, especially Mrlanoplns differentialis, M. bivittatus, and M. feniur-ruhrnni. 

 The author reconnnends ])lowing to destroy the eggs or the iise of poisoned bran or 

 hopper-dozers. About 400 tubes containing cultures of South African grasshopper 

 fungus were distril)uted in various parts of tlie State and a few of the persons who 

 used this fungus reported good results while a large number had no results. Experi- 

 ments at the station with this fungus were an utter failure. No evidence was obtained 

 to show that a single grasshopper had been killed by the fungus. In a few cases an 

 investigation was made of localities where success had been reported and it was found 

 that the grasshoppers were dying from another fungus {Empusa griUi). 



Axpidiotus howardi is reported as injurious to pear and white-ash trees. I'lant lice 

 were unusually abundant, especially Aphis poini and ^1. viburni. Sugar-beet leaf 

 beetle {Monoxia puncticollis) destroyed about half of a 14-acre field of beets near 

 Rocky Ford and also caused injury to beets at Ft. Collins. The beetles were found 

 throughout the summer and the insect is double brooded. Paris green, London 

 purple, and Paragrene gave good results when mixed with flour at the rate of 1:20. 

 The native food of the insect consists of a number of plants which grow in alkali 

 regions. The cherry slug was unusually abundant in the northern part of the State. 

 Good results were obtained in combating this insect by spraying with Paris green, 

 London purple, or Paragrene at the rate of 1 11). to 160 gal. water, arsenate of lead at 

 the rate of 1 lb. to 25 gal. water, white hellebore, 1 oz. to 3 gal. water, or by the use 

 of pyrethrum or lime. Zenoleum used at the rate of 1 lb. to 50 gal. water killed the 

 insects but injured the plants somewhat. Road dust was of little vahie. 



Notes are given on the Western strawberry sawfly by S. A. Johnson. The species 

 is described as new by A. D. MacGillivray, under the name Enq^liytus gillcttei. The 

 adult insect appears in May and early June and lays its eggs in the leaves. The 

 larv;e hatch in a few days and live for a week or longer on the lower epidermis of 

 the leaf. At the end of 4 to (j weeks they become full grown and crawl into the 

 ground to i)upate. There is 1 brood annually. "White hellebore is recommended as 

 a remedy. 



Tychea brevicornis is reported as injuring beets. In preventing the attacks of this 

 insect the author reconnnends that the beets should not be planted in ground that 

 was previously occupied with corn or salt grass. Considerable injury is reported as 

 having been suffered by pine trees in Platte Canyon. Pinus ponderosa was attacked 

 by a number of bark beetles, including Tomicxis calligraphus, T. integer, T. oregoni, 

 Dendroctonus ponderosa, D. valens, etc. The author recommends cutting and burn- 

 ing dead trees and the cutting for timber or fuel of such trees as show signs of 

 weakening. 



A list of bee i)lants is given showing the more important flowering 2)lants from 



