U»101 F.XI'KKIMKNT STATION RECORD, 853 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



A synopsis of the bats of California, H. \V. GlXJUrtU (f'nir. Cal. Pub*. 

 Zoo/., n (1918), No. i,l, pp. StS-404, pi*. 11, fat. .",: abt. in Boienoe, n. tor., 44 

 (W19), No. 1260, pp. 193-195). — r.ut three families of bats are mown t<> occur 

 in tlie Western Hemisphere north of the Bahama [stands and Central MexJ 

 nainoly, the Phyllostomidse, represented In California by a single species; the 

 Vespertillonldse, represented by -•'. Bpeclea and subspecies; and the ftTolosslrtsa. 

 represented by i species. The synopsis Includes a 6-page bibliography. 



The crow in Colorado, W. II. Bkbotold (Auk, .36 (1919), No. t, pp. 198-205).— 

 The author finds that two subspecies of the crow occur in Colorado, namely, 

 Corpus brachyrhynclios brachyrhi/nchox and 0. brachyrhyncho* hetperit. Both 

 are found on the eastern slope, but only the latter on the western slope 

 the Rocky Mountains. 



Report of the entomologist of the Arizona Commission of Agriculture and 

 Horticulture for the year ended June 30, 1917, A. \V. Morbii.l {Ariz. Com. 

 Agr. and Ilort. Ann. Rpt., 9 (1917), pp. 15-61. pi. 1, figs. 2' f ).— In the first part 

 of this report (pp. 15-31) the author deals with the activities <>f the plant In- 

 spection service, including the work against the alfalfa weevil and cotton boU 

 weevil ; investigations of the clover seed chaldd fly, which Is one of the most 

 injurious crop pests in Arizona ; grasshoppers, an account of which has been 

 noted (E. S. R., 30, p. 359) ; etc. In the second part (pp. 33-61) notes are pre- 

 sented on the more important insects of the year. 



The peach twig moth, which has not previously been recognized in Arizona, 

 was very destructive to peaches in 1917 in three widely separated orchards in 

 the Salt River Valley. Observations in the Salt River Valley by the author 

 indicate that the life history of the pest is somewhat different from that ob- 

 served elsewhere. The young fruit from one-fourth to a third of an inch in 

 diameter may be destroyed in March by the same generation that destroys the 

 young twigs, and the adult moths may appear as late as November. The in- 

 jured frHit In the valley is subject to a secondary attack by a small dark brown 

 beetle, known as the dry fig beetle (Carpopliilus hemipicrus). In one orchard 

 where the twig moth occurred in 1917 more than 50 per cent of the pead 

 were infested and the loss practically complete. 



Specimens of the moth borer from pear trees, mention of which was made in 

 the previous report (E. S. R., 37, p. 846) were reared and proved to be 

 the carpenter worm (Prionoxystus rohinur). In some instances the tree- w • 

 seriously injured and nearly destroyed by it. The adult usually appears in 

 June and July, three years being required for the completion ( .f its life cycle. 



Injury to a fig tree near Tempe was found to be due to a Bfl which 



closely resembles tbe three-lined fig borer (I'tychodcs trilineaius). 



Unripe apricots in certain orchards In the Salt River Valley were seriously 

 scarred by a new species of thrips to which Morgan has given the name l rank- 

 liniella morriUi. The scarring of the apricots la said to be similar to thai done 

 by the citrus thrips to citrus fruit, but is much more severe sine.- the injured 

 apricots are more frequently stunted in growth and deformed. In control 

 work with this thrips good results are said to have been obtained from the use 

 of blackleaf 40 at the rate of 1.25 fluid ounces and 7 OS. of whale-.. il soap to 

 10 gal. of water (1:1,000). A carefully applied driving spray under at le 

 150 lbs. pressure was essential for the control of the pest 



A nitidulid beetle (Conotelus mexicanns) was found In great abundance on 

 November 7 on cucumber blossoms In a garden near Mesa. Other inso^t« of 

 importance during the year are considered under the headi n gs of nd 



123007°— 19 5 



