533 



EsAM (G.). Control of Red Mite and Woolly Aphis in Nursery Stock.— 



New Zealand Jl. Agric, Wellington, xix, no. 2, 20th August 1919, 

 pp. 94-96. 



Experiments made to ascertain a cheap but efltective spray against 

 red mite [Tetranychus] and woolly aphis [Eriosoma lanigerum] are 

 here described, and the results show that lime-sulphur is as effective 

 against Tetranychus as Blackleaf 40, but that the latter is essential 

 where woolly aphis is present. Spraying lor red mite should be carried 

 out soon after the first mites hatch from the summer eggs and before 

 the winter eggs are laid. For this purpose three applications in October 

 have proved efficacious in New Zealand, but further observations are 

 being made to confirm this. This treatment is equally well suited to 

 orchard and nursery stock. 



Weiss (H. B.). Notes on Gargaphia iiliae, Walsh, the Linden Lace-Bug, 

 — Proc. Biol. Sac. Washington, D.C., xxxii, no. 33, 30th September 

 1919, pp. 165-168. 



During 1918 and 1919 the lace-bug, Gargaphia iiliae, Walsh, was very 

 abundant in Philadelphia. The egg and 5 nymphal stages are des- 

 cribed. The eggs are inserted in clusters in the lower leaf surface of 

 limes about the end of May or beginning of June, soon after the appear- 

 ance of the adults. They hatch in about a week and the nymphs, which 

 feed on any part of the leaf, are carefully guarded by the female. The 

 combined nymphal stages last about 3 weeks. The adults of the first 

 brood aj)pear during the end of June and beginning of July, after which 

 eggs are again laid ; the second generation hibernates in the adult form 

 and reappears in the following spring. 



RuMSEY (W. E.). Biennial Report of the State Entomologist, July 

 1st 1916-June 30th 1918. — 3;(/ Bienn. Rept. W. Virginia Dept. 

 Agric, Charleston, 1917-18, pp. 43-56, 5 figs. [Received 21st 

 October 1919.] 



In the southern counties of West Virginia the San Jose scale [Asjiidio- 

 tus perniciosus] caused considerable damage to peach trees in 1917. 

 Instructions were given with regard to spraying against this pest, and 

 spraying demonstrations also included measures against codling moth 

 [Cydia pomoneUa] and plum curculio [Conotrachelus nenuphar]. 



A scale, Chionasjns salicis, was intercepted on lilac from Holland. 



RuMSEY (W. E.). The Periodical Cicada or so-called Seventeen-year 

 Locust in West Virginia 1919. — West Virginia Dept. Agric, 

 Charleston, November 1918. Bull. 37, 8 pp., 1 plate. 3 figs. 

 [Received 2 1 st October 1919.1 



A fist is given of the counties in West Virginia in which brcod x of 

 the periodical cicada [Tibicen se/ptemdecini] was expected to appjar in 

 the spring of 1919. The life-history and remedial measures are 

 described [see this Review, Ser. A, v, p. 369, and vii, p. 381]. The 

 natural enemies include a large digger wasp, pigs, poultry, birds and 

 various wild animals, which devour both the mature nymphs and 

 adults. The next brood is expected in 1923. 



