174 



Lee (H. A). The Prevention of the Importation of Injurious Insects 

 and Parasitic Fungi on Economic Crops from Foreign Countries. — 



Philippine Agric. Rev.. Manila, xiii, no. 2, 1920, pp. 126-127. 



Numerous instances are cited of injurious pests and diseases that 

 are not yet present in the PhiUppine Islands, but that would probably 

 cause very serious losses if they ever entered them, and the necessity 

 for a plant quarantine service to guard against their introduction 

 is emphasized. The organisation that is in the course of formation 

 to deal with the question is described [see preceding paper]. 



Alfieri (E.) . Sopra una Specie probabilmente nuova di Afide gallecolo 

 dell'Olmo e sui suoi Simbionti. [A probably new Species of 

 gallicolous Aphid of the Elm and its Symbionts.] — Boll. Lab. Zool. 

 Gen. Agrar. R. Scuola Sup. Agric, Portici, xiv, 1920, pp. 18-32, 

 1 fig., 1 plate. [Received 6th February 1921.] 



It is agreed that in Europe the following Aphids produce galls on 

 the elm [Ulmus campestris] : — Tetraneura alba, Ratz., T. rubra, 

 Licht., T. ulmi, DeG., Eriosoma ulmi, Kalt., and E. lanuginosum. Hart. 

 The galls ascribed to the last-named species are very different from the 

 others, and belong to two distinct types which have been described 

 by Massalongo. A study of these two types leads the author to believe 

 that the closed type of gall is produced by E. lanuginosum, but that 

 the open type (the second type of Massalongo) is due to a new species, 

 which is here described as Eriosoma inopinatum, the differences in 

 antenna and wing between it and E. lanuginosum being figured. 



In Italy the fundatrix of E. inopinatum begins its gall at the end 

 of April or early in May. By mid-May it is mature within the gall, 

 and produces numerous larvae that mature in 10-12 days, so that 

 parthenogenetic progeny of the latter are found in the gall by the 

 end of May. This second generation increases in number and size 

 in the second week in June. After mid-June swarming begins. During 

 this period the winged migrants begin to deposit yellowish larvae 

 in abundance. The author was compelled to abandon this research 

 before discovering the food- plant chosen for this larviposition. The 

 winged migrant does not seem to become a root-form of the elm itself. 



Many symbionts of E. inopinatum occur within its gall, the author 

 giving the following list :— Diptera : a Syrphid, Pipizella heringi, Zett., 

 an Agromyzid, Leucopis annulipes, Zett., an Anthomyid, Muscina 

 stabulans, Meig. Neuroptera : Chrysopa perla, L. Coleoptera : The 

 CoccineWids, Propileaquatuordecimpunctata, L., Adalia bi punctata,!^., 

 var. quadrimaculata. Scop., Adonia variegata, Goez., and Scymnus 

 quadripustulatus, F. Rhynchota : Anthocoris nemoralis. Fall. Dermap- 

 tera : Forficula auricularia, L., and F. biguttata, F. Two undeter- 

 mined Hymenoptera were also found, one being a parasite of the 

 fundatrix and the other, an Ichneumonid, a parasite of C. perla. 



SiLVESTRi (F.). La Mosca della Brionia, Gonyglossum wiedemanni, 

 Meig. (Diptera, Trypaneidae). — [The Bryony Fly, G. wiedemanni.] 

 — Boll. Lab. Zool. Gen. Agrar. R. Scuola Sup. Agric, Portici, xiv. 

 1920, pp. 205-215, 4 hgs. [Received 6th February 1921.] 



The Trypetid fly, Gonyglossum wiedemanni, Meig., is redescribed 

 in all its stages. It has been recorded in England, France, Germany, 

 Austria and Italy, and it li\TS in the berries of Bryonia alba and 



