134 



became established after about six months. In 1914, after three years, 

 they occurred throughout the sugar-cane districts of the Phihppine 

 Islands. The extent of the reduction of the borers by the Tachinids 

 may be seen from the fact that in 1913, 3,440 oz. of beetles were 

 collected from a plantation, as compared \sdth 27,010 oz. in 1912, show- 

 ing a reduction of over 87 per cent. In 1914, the same plantation 

 contained scarcely an injured cane. 



Felt (E. P.). List of Zoophagous Itonididae.— JL Ec<m. Entom. 

 Concord, N.H., vii, no. 6, December 1914, pp. 458-459. 



A record is given of predaceous Cecidomyidae (Itonididae) and 

 their hosts, which seems to show that the value of certain gall-midges 

 as natural enemies has been overlooked. The Coccidae are preyed 

 upon by the following 9 genera i^Coccidormjia, 2 species ; Dentifihula, 

 1 species ; Dicrodiplosis, 3 species ; Mycodiplosis, 1 species ; Diadi- 

 plosis, 1 species ; Karschomyia, 1 species ; Lobodiplosis, 1 species ; 

 Lestodiplosis, 2 species ; Cecidomyia, 1 species. The Aphididae 

 are attacked by Aphidoletes, 5 species ; Lestodiplosis, 1 species ; 

 Itonida, 1 species. Tetranychus is preyed upon by Arthrocnodax, 

 4 species ; Mycodiplosis, 1 species. The Eriophyidae are preyed 

 upon by Endaphis, 1 species ; Arthracnodax, 1 species. A species 

 of gall-midge, genus unknown, is believed to have been reared from 

 the eggs of the Cicada, Tibicen septemdecim. 



Jones (T. H.). Additional Notes on Porto-Rlcan Sugar-Cane Insects. 

 Jl. Econ. Entom., Concord, N.H., vii, no. 6, December 1914, 

 pp. 461-463. 



These notes are supplementary to an earlier paper on these 

 insects [see this Review, Ser. A, i, pp. 184-185]. Pseudococcus calceo- 

 lariae. Mask., is recorded for the first time from Porto Rico, all previous 

 references to sugar-cane mealy-bugs being given under the name 

 P. sacchari, Ckll. The occurrence of the Cecidomyid, Diadiplosis 

 (Karschomyia) cocci on P. sacchari (?) is recorded. Zelus ruhidus has 

 been found attacking Laphygma frugiperda. The discovery of the 

 Tachinids, Linnaemyia fulvicauda and Compsilura oppugnator is noted. 

 The butterfly, Prenes ares, Feld., has been bred from larvae found 

 feeding on cane leaves, as also was a species allied to Thymelicus 

 magdalis, from Cuba, neither of these being, however, important sugar- 

 cane pests in Porto Rico. Sipha flava, Forbes, formerly recorded as 

 S. graminis. Kit. and Aphis setariae, Thos., have been identified. 

 Chrysopa collaris, Schm., has been observed feeding on S. flava, while 

 A. setariae is heavily parasitised by a Braconid, probably Lysiphlebus 

 testaceipes. Cress., and is also attacked by Scymntis roseicollis, Muls. 

 The Mymarid egg-parasite of Delphax saccharivora, Westw., is reported 

 to be Anagrus armatus, Ashm. Two species of thrips were taken from 

 cane leaves on which characteristic thrips injury was noted ; one i 

 described as a new species, Haplothrips (?) tibialis, sp. n., the other 

 being Heliothrips femoralis. Renter. The mite which feeds upon sugar- 

 cane stalks has been identified as Tarsoneynus spinipes. Hirst, and 

 that on sugar-cane leaves is stated to be a species of Tetranychus which 

 is perhaps new. 



