387 



Tower (D. G,). Comparative Study of the Amount of Food eaten by 

 Parasitized and Nonparasitized Larvae of Cir])his imipuncta. — 

 Jl. Agric. Research, Washington, D.C., vi, no. 12, 19th June 1916, 

 pp. 455-458, 1 table. 



Larvae of Cirphis unvpuncta. Haw., which were parasitised by 

 Avanteles militaris. Say, were fed on portions of leaves of maize of a 

 knowTi area. The amount consumed was compared with that eaten 

 by healthy larvae as determined by Davis and Satterthwait. The 

 results showed that during the last three instars the parasitised larvae 

 require about half as much food as the non-parasitised during the same 

 period. The duration of the life-cycle of the parasite within the host 

 was practically constant, although the age of the larvae in which 

 oviposition took place varied considerably. 



QuAiNTANCE (A. L.) & Baker (A. C). Aleurodidae or White Flies 

 attacking the Orange, with Descriptions of Three New Species of 

 Economic Importance. — Jl. Agric. Research, Washington, B.C., vi, 

 no. 12, 19th June 1916, pp. 459-472, 3 figs., 6 plates, 2 tables. 



This paper summarises the known species of whiteflies attacking 

 citrus trees. They comprise : — Aleurocanthus citriperdus, sp. n., from 

 Ceylon on an undetermined tree, and from India and Java on Citrus 

 sp. and orange ; A. woglumi, Ashby, here described for the first time, 

 occurring on orange in India, Ceylon and Jamaica, as well as on other 

 species of Citrus, Capparis spp., Salacia reticulata, etc. ; A. citricolus, 

 Newst., on Citrus sp. from East Africa ; A. spiniferus, Quaint., on 

 orange from south China and on Citrus sp. and rose from Java ; 

 Aleurolohius marlatti, Quaint., on orange from Japan, Citrus sp. and 

 Morus sp. from Lahore, Ficus sp. from Ceylon and on an undetermined 

 plant from Java ; Aleurothrixus porteri, sp. n., from Chile and Brazil 

 on a variety of food-plants, including orange ; A. floccosus. Mask., 

 from the West Indies, Florida, Mexico, British Guiana, Brazil, Chile, 

 etc., on orange, lime, grapefruit, guava, Plumeria sp., Baccharis 

 genistelloides, etc. ; A. howardi, Quaint., having the same distribution 

 and hosts as the preceding species ; Bemisia giffardi, Kotin., on Citrus 

 sp. in Honolulu and on an undetermined tree in Lahore ; Dialeurodes 

 citri, Ashm., on Citrus spp., Melia azedarach, Gardenia jasminoides, 

 Cojfea arahica, Ficus nitula, etc., from India, Ceylon, Japan, China, 

 Chile, Mexico, Brazil and Florida ; D. citrifolii, Morg., on Citrus spp. 

 from North Carohna, Mississippi, Louisiana, California and Florida, 

 and Ficus nitida from New Orleans ; Paraleurodes perseae, Quaint., on 

 orange. Per sea americana and possibly Diospyros spp., from Florida ; 

 Trialeurodes floridensis, Quaint., on avocado, orange, guava and 

 Anona squamosa from Florida ; T. vitrinellus, Ckll., on orange from 

 Mexico and oak from South California ; Tetraleurodes mori, Quaint., 

 on orange and a variety of other plants in the eastern United States ; 

 T. mori var. arizonensis, Ckll., on orange from Arizona and Mexico. 



DiCKERSON (E. L.) & Weiss (H. B.). Notes on Leptoypha mutica, Say 

 (Hemip.). — Entom. News, Philadelphia, xxvii, no. 7, July 1916, 

 pp. 308-310, 1 plate. 



The Tingid bug, Leptoypha mutica. Say, is recorded on Chionanthus 

 virginica, L., at Hammonton, New Jersey, where considerable injury 

 (C294) b2 



