440 



Haviland (M. D.) On the Larval Development of Dacniisa areolaris 

 Nees (Braeonidae), a Parasite oJ Phytomyzinae (Diptera), with a 

 Note on certain Chalcid Parasites of Phytomyzids. — Parasitology, 

 Cambridge, xiv, no. 2, June 1922, pp. 167-173, 5 figs. 



Phytomyza angelic ae, Zett., mines in the leaves of Angelica campestris, 

 each mine usually containing only one larva. ' When fully fed it leaves 

 the leaf by a sht and falls to the ground for pupation, which lasts 

 from 19 to 25 days. In captivity eggs were laid a few hours after 

 emergence of the adult, the latter living only one or two days. In 

 the neighbourhood ' of Cambridge about sixty per cent, of this 

 Phytomyzid were found to be parasitised by the Braconid, Dacnusa 

 areolaris, Nees. Apparently only the early stages of the larva are 

 infested. Epiparasitism (double infestation) [R.A.E., A, x, 273] 

 does not seem to occur in this species. About thirty-six hours after 

 the host has formed its puparium, the parasite throws off the trophic 

 membrane in which it is contained and feeds on the viscera of the 

 host, taking about a week to demolish it. After that it lies free in the 

 puparium where metamorphosis takes place. Pupation lasts about 

 two weeks, the development of the parasite being very closely related 

 to that of the host. Adults lived for 5-6 days in captivity when fed 

 on sugar and water. 



Certain Chalcids of the genera Eitlophus and Chrysocharis are 

 ectoparasites of P. angelicae, the host dying soon after the parasite 

 begins to feed. Transformation takes place within the blister on the 

 leaf, the pupal period lasting about four weeks. 



Contra la Mosea del Olivo. [Against the Olive Fly.] — Rev. Inst. 



Agric. Catalan S. Isidro, Barcelona, Ixxi, no. 6, June 1922, 



p. 98. 



The Lotrionte method [R.A.E., A, ii, 289, 452] against the olive fly 



[Dacits oleae] is being made use of to an increasing extent in Spain. 



Near Tarragona about 11,000 trees are to be treated, while the 



authorities at Barcelona are adopting it in several localities, and it is 



expected that in a few years the entire olive crop will be saved there. 



In one township about :^240 has been earmarked for this purpose. 



MiJLLER (K.) & Rabanus (A.). Ein grosser Fortschritt in der Schad- 



hngshekampfung ? [A great Advance in Pest Control ?] — 



Angew. Botanik, iii, 1921, pp. 145-148. (Abstract in Zeitschr. 



Pflanzenkr. n. Gallenkunde, Stuttgart, xxxii, no. 1-2, 1922, 



pp. 38-39.) 



Urania green has been recommended in block form [R.A.E. , A, ix, 



611], but some of its disadvantages, apart from its enhanced price, 



are the slight degree of suspension when dissolved in water, a precipitate 



of coarse particles, with little adhesiveness, soon settling at the bottom 



of the liquid. 



Reichert (A.). Entomologisches aus Miltitz 1918. [Entomological 

 Notes from Miltitz in \d\S.]—Rosenztg., Karlsruhe, xxxv, 1920, 

 pp. 28-31, 42-43. (Abstract in Zeitschr. Pflanzenkr. w. Gallen- 

 kunde, Stuttgart, xxxii, no. 1-2, 1922, p. 66.) 



This paper enumefafes the rose pests observed in 1918 on Rosa 

 damascena, with biological data. The larvae of the moth, Incurvaria 

 morosa, Z., infested the buds, the adults appearing in May. 



Insects beneficial to rose bushes are also dealt with. 



