426 



Gautier (C). Recherches physiologiques et parasitologiques sur les 



L6pidopt^res nuisibles. Parth6nogen6se chez Apanteles glomeratus. 



Linn^. — C.R. Soc. Biol., Paris, Ixxxii, no. 24, 26th July 1919, pp. 



1000-1002. 



The author has established, by experiments described in detail, 



the existence of parthenogenesis in Apanteles glomeratus, L., the 



Braconid parasite of Pieris brassicae [see this Review, Ser. A, vii, 



p. 397]. This probably occurs but rarely under natural conditions, 



but it is phenomenon that might be of great importance in some 



cases. 



PiCARD (F.). Sur deux Cecidomyies du Midi de la France. [Diptera.] 

 —Bull. Soc. Entom. France, Paris, 1919, no. 11, 11th June 1919, 

 pp. 207-208. [Received 8th August 1919.] 



The galls formed by Putoniella marsupialis, F. Low, on the under-side 

 of leaves of Primus spinosa, P. insititia and P. domestica are described. 

 The insects occur abundantly but only in certain localities. They 

 are not found on blackthorn in roadside hedges, probably on account 

 of the dust, but only at some distance from any highroad. P. marsu- 

 jyialis is highly parasitised by a number of Chalcids, the chief of 

 which is Torymus exilis, Wlk., which also parasitises Perrisia asperulae 

 and Rhopalomyia artemisiae. 



Galls are produced on the leaves of the cultivated violet by Perrisia 

 affi7iis, Kieff. Similar galls have been observed on several species 

 of Viola in Europe and Northern Africa, but do not seem to have 

 been noticed hitherto in France. In some cases all the leaves are 

 rolled and the flowers do not develop. Transformation takes place 

 within the gall. Another Cecidomyid, Contarinia vioUcola, Coq., 

 attacks violets in North America, rolling the leaves in exactly the 

 same way. This species is treated with sprays of freshly-slaked lime, 

 a remedy that might be tried against the species occurring in France. 



Gabotto (L.). La Tignuola della Patata. [The Potato Moth.]— 

 Riv. Agric, Parma, xxv, no. 32, 8th August 1919, pp. 304-305. 



The potato moth, Phthorimaea operculella, Zell., has appeared in 

 the Province of Palermo, Sicily, probably omng to the removal of 

 import restrictions. This article of a popular character gives an 

 account of the pest and of the methods of combating it, stress being 

 laid on the danger of delay. 



Pettit (R. H.). New Pests which have established themselves in the 

 United States and for which we should be on the lookout. — Qrtrly. 

 Bull. Michigan Agric. Expt. Sta., East Lansing, i, no. 3, Februa y 

 1919, p. 109. [Received 11th August, 1919.] 



Attention is drawn to the importation into the United States of 

 the eelworm, Tylenchus tritici, and the European corn borer, Pyrausta 

 nubilalis, which have so far not been reported from Michigan, where 

 however their appearance should be carefully looked for and 

 immediately reported. 



