443 



Fron (M. G.). Note sur le Tigre du Rhododendron. [Note on Stepha- 

 nitis rhododendri.] — Jl. Soc. Nat. Hortic. France, Paris, xix, 

 no. 4, June 1918, pp. 91-93, 1 fig. [Received 13th August 1918.J 



A pest new to France has recently occurred on rhododendrons in 

 the neighbourhood of Paris. This is the Tingid, Stephanitis rhododendri, 

 Horv., which first appears in early spring and is found abundantly 

 on the lower surfaces of the leaves in June. Eggs are deposited 

 towards the end of July and August in the leaves and these hibernate 

 until the following spring. Remedial measures include nicotine sprays, 

 or soap and pyrethrum, which must be applied to the lower surface 

 of the leaves. Tobacco fumigation imder a tent is also recommended ; 

 hydrocyanic acid gas fumigation would doubtless also be successful if 

 carried out by experienced persons. 



Teodoro (G ). Alcune Osservazioni sui Saecaromiceti del Lecanium 

 persicae, Fab. [Some Observations on the Saccharomycetes of 

 Lecanium persicae.] — Redia, Florence, xiii, no. 1-2, 23rd July 

 1918, pp. 1-5. 



Like other Coccids and many other insects also, Eulecanium 

 {Lecanium) persicae harbours a species of saccharomycete that can be 

 hereditarily transmitted and that fives free in its host in the form of 

 saccharomycetiform cells. 



Malenotti(E.). Nuovi Calciditi. [New Chalcidids.] — Redia, Florence, 



xiii, no. 1-2, 23rd July 1918, pp. 77-92, 17 figs. ^ 



The number of Chalcidids known to parasitise Chrysomphalus 

 dictyospermi are increased to eight by the addition of Aphelinus bovelli, 

 which is described from specimens from Barbados. A full description 

 is given of the MjTnarid, Melalaptus torquatus, on which a preliminary 

 note has been published [see this Review, Ser. A, v, p. 337]. Though 

 taken from orange leaves attacked by C. dictyospermi, it is not believed 

 to parasitise this scale, since a careful examination of the infested 

 material revealed the presence of some Psocids and Microlepidopterous 

 larvae, of which it may be a parasite, as is the case with other Mymarids. 



Berlese (A.). Su una nuova Specie di Trombidide, appartenente ad 

 un nuovo Genere. supposta Parassita, alio Stato di Larva, delle 

 Cavalette, in Puglia. [A new Species of Trombidiid, belonging to 

 a new Genus and believed to be parasitic on Locusts Nymphs 

 in Apulia.] — Redia, Florence, xiii, no. 1-2, 23rd Julyl918, pp. 

 93-97, 1 plate. Also Emendation after p. 198. 



The Trombidiid mite described in this paper is Calothromhium 

 paolii, gen. et sp. n. The conditions under which it was found in 

 ApuUa seem to indicate that it is a parasite of Dociostaurus maroccanus. 



Berlese (A.). Centuria quarta di Acari nuovi. [Fourth List of One 

 Hundred new Acari.] — Redia, Florence, xiii, no. 1-2, 23rd July 

 1918, pp. 115-192. 



This paper describes one hundred new Acarids from various parta 

 of the world. 



(C504) b2 



